Contact
Name
Fabio Maltoni
Position
Professor
Email
fabio.maltonclouvain.be
Address
Centre for Cosmology, Particle Physics and Phenomenology - CP3
Université catholique de Louvain
2, Chemin du Cyclotron - Box L7.01.05
B-1348 Louvain-la-Neuve
Belgium
Phone
+32 10 47 3166
Office
E.247
My personal homepage
UCL member card
Teaching at UCL
Quantum Mechanics
PHY1222
First course on Quantum Mechanics.
45h+30h, 5 ECTS
Relativistic Quantum Mechanics
PHY2125
Introduction to the Dirac Equation.
15h+15h, 4 ECTS
Electroweak interactions
PHY2224
Introduction to the Standard Model of the electroweak interactions.
22.5h, 4 ECTS (shared with J.M.Gerard)
Strong interactions and symmetries
PHY2223
Introduction to perturbative QCD and symmetries
30h, 5 ECTS (shared with J.M.Gerard)
Seminars of theoretical and mathematical physics
PHY2501
Invited lectures on special topics.
15h, 2 ECTS.
People responsibilities
Research scientists
Olivier Mattelaer (UCL), member since September 2005
Responsible software maintenance and development of MadGraph 5, AMLO (including MadSpin and ALOHA). Study of new experimental approaches using the matrix element re-weighting.

Postdocs
Michele Lucente (H2020-MSCA-IF-2016), member since January 2016
I work on extensions of the Standard Model of particle physics aimed at accounting for the observed neutrino masses and flavour mixing, the origin of the baryon asymmetry of the Universe and the nature of dark matter. I am currently developing a new computer tool (MadbaM) devoted to precision computations of the baryon asymmetry of the Universe in beyond the Standard Model realisations.

Manoj Kumar Mandal, member since October 2016

Ken Mimasu (PAI, MSCA), member since October 2016
Collider phenomenology beyond the Standard Model, particularly on extended scalar sectors (two-Higgs doublet models, axion-like particles). Probing the Electroweak phase transition at the LHC. Confronting Baryogenesis via a strong electroweak phase transition with collider signatures at the LHC and beyond. Precision Higgs measurements and global fits in the framework of effective field theory.

Liam Moore, member since December 2016
I work on Top Quark Phenomenology in the Standard Model Effective Field Theory, and the development of the FeynRules package.

Ambresh Shivaji (Move-In Louvain), member since September 2016
I work in the area of collider physics. My current research interests include precision calculations and phenomenology of new physics using effective field theories.

Ioannis Tsinikos (FNRS),
I am interested in collider phenomenology, focusing on Standard Model processes and beyond. At the current time I am working on EW corrections in ttbar production at the LHC.

Visitors
Roberto Franceschini, member since October 2017
Probing fundamental interactions ...

Antonio Santos,
BSM physics and dark matter.

PhD students
Luca Mantani (MCnet3), member since September 2016
I work on LHC phenomenology, in particular how to detect new interactions among SM and interpret them via the SMEFT.

Xiaoran Zhao, member since April 2017
Higgs phenomonology.

Former members
Johan Alwall, Postdoc in CP3 from October 2005 to September 2006
Current position: Postdoc at SLAC, Stanford (US). Since 1st Jan 2010, Postdoc at FNAL.

Pierre Artoisenet, Postdoc in CP3 from May 2014

Mihailo Backovic (MOVE-IN), Postdoc in CP3 from October 2014

Zemrije Beca, Administrative staff in CP3

Olga Bessidskaia Bylund (MCnet), Visitor in CP3 from April 2015

Francesca Borzumati, Visitor in CP3

Diogo Buarque Franzosi (FSR+EU), Postdoc in CP3 from October 2011

Xavier Calmet (FNRS), Postdoc in CP3 from January 2008 to September 2009
Current position: Permanent at University of Sussex (UK).

Riccardo Costa, Master student in CP3 from September 2016 to January 2017

Goutam Das (MCnet), Visitor in CP3 from September 2015 to December 2015

Priscila de Aquino (VUB), Visitor in CP3 from October 2008 to October 2013

Karen De Causmaecker, Visitor in CP3

Federico Demartin (IISN (FNRS)), PhD student in CP3 from October 2012

Nicolas Deutschmann (UCBL), PhD student in CP3

Gauthier Durieux (FNRS), Postdoc in CP3 from September 2010

Marco Feliciangeli (UCL), PhD student in CP3 from September 2007 to September 2011

Roshan Foadi (Marie Curie EU), Visitor in CP3 from September 2011

Rikkert Frederix (IISN), PhD student in CP3 from December 2005 to September 2009
Current position: Post-doc in Zurich.

Phillip Grajek, Visitor in CP3

Keith Hamilton (PAI), Postdoc in CP3 from October 2007 to August 2009
Current position: Post-doc in Milan, Italy.

Faten Hariri, PhD student in CP3

Kaoru Hawigara, Visitor in CP3

Benoît Hespel (FRIA), PhD student in CP3 from October 2012

Valentin Hirschi (Erasmus), Visitor in CP3 from September 2008 to January 2009

Barthélemy Houben, Master student in CP3 from September 2010

Thomas in't Veld, Visitor in CP3

Stefan Krastanov, Visitor in CP3 from April 2013 to August 2013

Antoine Laureys (FRIA), PhD student in CP3 from October 2009 to December 2012

Will Link, Visitor in CP3 from September 2009 to March 2010

David Lopez-Val (FNRS), Postdoc in CP3

Benedikt Maier (MCnet), PhD student in CP3 from March 2015 to June 2015

Swarup Kumar Majee (UCL), Postdoc in CP3 from October 2008 to October 2010
Current position: Post-doc at National Taiwan University.

Elisa Mariani (IISN), PhD student in CP3 from October 2011

Antony Martini (ERC program (CERN)), PhD student in CP3 from September 2012

Kentarou Mawatari, Visitor in CP3

Bettina Oexl, Visitor in CP3

Davide Pagani, Postdoc in CP3 from November 2013

Nicolas Pierre, Master student in CP3

Michele Selvaggi, Research scientist in CP3 from October 2012

Yoshitaro Takaesu, Visitor in CP3 from September 2011 to December 2011

Maria Ubiali (IISN), PhD student in CP3 from September 2009 to August 2010
Current position: Post-doc at Aachen University.

Eleni Vryonidou, Postdoc in CP3 from October 2013

Marco Zaro (IISN), PhD student in CP3 from October 2009 to October 2013
Current position: Post-doc at Paris VI.

Cen Zhang (IISN), Postdoc in CP3 from February 2012

Research statement
The high energy and luminosity of the present and future colliders, from the Tevatron (FNAL) to the Large Hadron Collider (CERN) to a Tev Linear Collider, will offer the widest range of physics opportunities to the exploration of the high-energy frontier. Among the highest priorities is understanding not only the nature of the electroweak symmetry breaking (EWSB) but also the mechanism through which the electroweak scale stabilizes. Simple and very robust arguments indicate that this scale should be less than one TeV, very much in the reach of the above mentioned colliders. At this energy, spectacular events take place and mulijet final states in association with leptons or missing energy constitutes the most interesting data samples. The quest for the Higgs boson(s) and/or for supersymmetric particles will rely on our ability of predicting both the signal and the standard model processes which are the backgrounds of these searches.

The difficulty of detecting such signatures asks for a dedicated and joint effort of all the high-energy physics community. Not only the best theoretical predictions for the expected signals will be necessary, but also a very good understanding of the large QCD backgrounds and the detectors responses will allow us to unreveal the mechanism of EWSB. In this respect, I consider of primary importance for theorists to work in close contact with experimentalists.

In the next crucial years which will see the first new data from the LHC, I plan to focus my efforts in two main directions:

  1. provide new and/or more precise evaluations of the most important signatures that probe the the EWSB mechanism, such as top and Higgs boson(s) production both in the standard model and its extensions.
  2. provide the experimentalists at the colliders with the means to simulate events occurring at the energy frontier.
Projects
I am involved in the following research directions:

Advanced Multi-Variate Analysis for New Physics Searches at the LHC

With the 2012 discovery of the Higgs boson at the Large Hadron Collider, LHC, the Standard Model of particle physics has been completed, emerging as a most successful description of matter at the smallest distance scales. But as is always the case, the observation of this particle has also heralded the dawn of a new era in the field: particle physics is now turning to the mysteries posed by the presence of dark matter in the universe, as well as the very existence of the Higgs. The upcoming run of the LHC at 13 TeV will probe possible answers to both issues, providing detailed measurements of the properties of the Higgs and extending significantly the sensitivity to new phenomena.

Since the LHC is the only accelerator currently exploring the energy frontier, it is imperative that the analyses of the collected data use the most powerful possible techniques. In recent years several analyses have utilized multi-variate analysis techniques, obtaining higher sensitivity; yet there is ample room for further improvement. With our program we will import and specialize the most powerful advanced statistical learning techniques to data analyses at the LHC, with the objective of maximizing the chance of new physics discoveries.

We are part of a network of European institutions whose goal is to foster the development and exploitation of Advanced Multi-Variate Analysis (AMVA) for New Physics searches. The network offers extensive training in both physics and advanced analysis techniques to graduate students, focusing on providing them with the know-how and the experience to boost their career prospects in and outside academia. The network develops ties with non-academic partners for the creation of interdisciplinary software tools, allowing a successful knowledge transfer in both directions. The network studies innovative techniques and identifies their suitability to problems encountered in searches for new physics at the LHC and detailed studies of the Higgs boson sector.

External collaborators: University of Oxford, INFN, University of Padova, Université Blaise Pascal, LIP, IASA, CERN, UCI, EPFL, B12 Consulting, SDG Consulting, Yandex, MathWorks.

Complementarity of dark matter searches in simplified models

Study of the complementarity between dark matter relic abundance, direct detection, indirect detection and collider searches applied to the dark matter simplified models. These models consider a dark matter candidate communicating to the quark (especially top) sector of the standard model via a bosonic or vectorial mediator.

External collaborators: Eric Conte (GPRHE), Benjamin Fuks (LPTHE), Jun Guo (Chinese Academy of Science), Jan Heisig (RWTH), Kentarou Mawatari (LPSC Grenoble), Michael Kraemer (RWTH), Mathieu Pellen (University of Wuerzburg).

EFLO

Implementation of the SMEFT at NLO in QCD in the Feynrules MadGraph5_aMLO chain and phenomenological studies

External collaborators: Cen Zhang, Celine Degrande.

Electroweak corrections

Automation of the calculation of NLO Electroweak corrections and phenomenological studies of their impact on Standard-Model and Beyond-the-Standard-Model processes at colliders.

FeynRules

An automated framework for BSM phenomenology that allows one to compute Feynman rules from a Lagrangian.

External collaborators: Céline Degrande (CERN) Benjamin Fuks (Jussieu).

Higgs phenomenology at the LHC

We study the Vector Boson Fusion production channel for the Higgs boson and other particles at the LHC, mainly focusing on the role of QCD corrections.

Loop-induced processes in the SM and Beyond

Automation within MadGraph5_aMLO and phenomenological studies of loop-induced processes for the LHC

MadGraph5_aMLO

Monte Carlo development.

External collaborators: Benjamin Fuks, Kentarou Mawatari, Kaoru Hagiwara, Tim Stelzer, Stefano Frixione, Marco Zaro, Rikkert Frederix, Valentin Hirschi, Paolo Torrielli, Johan Alwall, Hua-Sheng Shao, Mihailo Backovic,...

Search for nonresonant Higgs boson pair production in the llbb+MET final state

The discovery of a Higgs boson (H) by the ATLAS and CMS experiments fixes the value of the self-coupling λ in the scalar potential whose form is determined by the symmetries of the Standard Model and the requirement of renormalisability. Higgs boson pair production is sensitive to the self-coupling and will play a major role in investigating the scalar potential structure.

This project consists in a search for nonresonant Higgs boson pair production via gluon fusion in the final state with two leptons, two b jets and missing transvere energy – gg → H(bb) H(WW) asking for the leptonic decay of the W's. The analysis is conducted in close collaboration with phenomenologists to ensure the approach is theoretically sound and future-proof.

Study of processes with heavy quarks in the initial state

The difference between predictions obtained with a massive scheme, where a heavy quark is treated as a finale massive state and the massless scheme, where the heavy quark is viewed as an initial parton may be extremely sizable. The aim of the project is to gain a better understanding of the size of the collinear logarithms arising when a heavy quark is treated as a final massive state and to investigate its kinematical origin.

External collaborators: Maria Ubiali, Giovanni Ridolfi.

Past projects
Hide past projects.

I am involved in the following research directions:

Advanced Techniques for Fast Simulation and Data Analysis in High Energy Physics (ASAP)

The discovery of the 125GeV Higgs boson by the LHC experiments has finally opened a new era in the exploration of the TeV scale. The physics programs of CMS and ATLAS aim far beyond the simple discovery, and vigorously pursue the full characterization of the newly discovered state and the full exploration of the TeV scale in search of new phenomena. A key lesson drawn from first two years of LHC running is that most probably first discoveries and then identification of new states/interactions will not be easy. On the one hand, model-independent searches in simple topologies such as single/multi lepton at high transverse momenta have not shown any hint of new physics so far. On the other, topologies with jets and/or missing transverse energies, much more challenging experimentally, do strongly depend on the underlying theoretical models so that efficiently identifying signal enhanced regions of the phase space is quite involved. In this context, multi-variate techniques have become more and more central in the analysis of data from hadron collider experiments, to maximally exploit the information available on the signal and on the backgrounds. Amongst the most advanced techniques and certainly the most powerful one from the theoretical point of view, the so called matrix element method stands out. The main goal of this proposal is to advance the use and the scope of the matrix-element method so to significantly extend the range of physics applications at the LHC to the search of new physics. First we aim at providing the experimental HEP community with complete and automatic simulation tools, such as MadWeight/MoMEMta and Delphes, that overcome the technical limitations of the method. Second we propose to test and apply the new tools to current analyses in signatures that involve final state leptons and b-jets. Finally, we explore new and original applications of the method to both model-dependent or model-independent searches of new physics at the LHC.

External collaborators: CMS collaboration.

ALOHA

Create a code to create automatically HELAS routine in various format from the Feynman Rules.

Automatic Matrix Element method and associated analyses techniques

Madweight is a algorithm to automatically reweight experimental events with the squared matrix element, and therefore provides the required computation techniques for a practical application of the matrix element method.

We also study the usefullness of MadWeight to estimate differential cross-section Formula: 0 via the marginal distributions of the the experimental weights Formula: 1.

External collaborators: Pierre Artoisenet (Ohio state university).

Collider signatures of a low scale gravity

Study of the potential effects (such as black hole production) of a low scale gravity at the LHC.

Double seesaw mechanism and leptogenesis in SUSY SO(10) GUT

We construct a supersymmetric grand unified model where the leptogenesis under the gravitino constraint is successfully implemented after determining the parameters of the dominated double seesaw mechanism by fitting the available data on neutrino masses and mixings.

External collaborators: M. K. Parida (NISER), Amitava Raychaudhuri (HRI).

Extra-dimensional Collider signal at LHC

We are mainly concentrated here on the electroweak scalars and vector bosons production in the higher dimensional model.

External collaborators: Gautam Bhattacharyy (SINP), Anindya Datta (CU) and Amitava Raychaudhuri (HRI).

Graviton phenomenology at the LHC

To study graviton production through multi-jet final state processes at hadron colliders taking into account the following models: ADD, RS and a massless graviton model.

External collaborators: Qiang Li (Paul Scherrer Institut - PSI, Switzerland) and prof. Kaoru Hagiwara (KEK Theory Center and Sokendai, Japan).

Heavy colored particles + jets

QCD radiation in heavy colored particle production at the LHC is studied.

In collaboration with Johan Alwall (SLAC)

Herwig++

Herwig++ will be one of two or three, work-horse, multi-purpose event generators used in the analysis of LHC data.

In collaboration with Prof. Bryan Webber (Cambridge), Prof. Mike Seymour (CERN), Dr. Peter Richardson (Durham), Dr. Stefan Gieseke (Karlsruhe), Dr. David Grellscheid (Durham).

Loop induced processes at the LHC

We study a general approach to make predictions in terms of event generator of production processes induced by loops, such as gg>H.

Non UCL collaborators: Rikkert Frederix (ETH-Zurich), Valentin Hirschi (EPL-Lausanne), Stefano Frixione (CERN).

Keywords: Monte Carlo simulations, LHC, Higgs

MadDipole: Automatic Dipole subtraction

Automatizing the Catani-Seymour dipole subtraction formalism for NLO in QCD calculations within the MadGraph/MadEvent framework. Both for the subtraction terms for the real and the virtual contributions.

External collaborators: Thomas Gehrmann and Nicolas Greiner.

Modifications of the Higgs sector

We study modifications of the Higgs sector which involve Higgs bosons with anomalous scaling dimensions and/or hidden sectors.

Observability of a minimal extension of the scalar sectror: 2HDM at the LHC

The goal of this work is to explore the phenomenology of a two Higgs doublet model with a custodial symmetry. It provides topologies that are unusual in the models usually considered in the literature. Notably, it opens the possibility of having an inverted mass spectrum with respect to MSSM with the lightest Higges being a pseudo-scalar and an heavier triplet of charged and neutral higgses.

External collaborators: Simon de Visscher (Zurich university).

Phenomenology of Quantum Gravity

We study the renormalization of the Planck mass including quantum gravity effects and study potential experimental tests.

POWHEG

The POWHEG formalism of Prof. Paolo Nason allows the consistent combination of NLO calculations and parton shower simulations. We aim to exploit and realise this method for processes occuring in the LHC. Implementation of the method for various processes is a key part of the work. We are also interested in a general formulation of the method for automating 2->2 processes. Extensions of the method to NNLO, including realisations, are also to be addressed.

In collaboration with Prof. P.Nason (Milan), Dr. P.Richardson (Durham), J.Tully (Durham)

QCD and Twistors

The new approach from twistor spaces is applied to the study of the properties of multiparton amplitudes.

Quarkonium

Production and decay of bound states of heavy quarks. Phenomenology and MC tools (MadOnia).

External Collaborators:
P. Artoisenet (Ohio), T. Stelzer (UIUC), J.P. Lansberg (Univ. Friburg, Germany), J. Campbell (Glasgow, UK), F. Tramontano (Univ. Napoli, Italy),...

Renormalization group evolution and the neutrino physics

We are interested here to extract some new features of the neutrino physics with the use of renormalisation group equations.

External collaborators: Rathin Adhikari (CTP, JMI), Anindya Datta (CU).

Simulation of events with QCD radiation

The aim of this project is to quantify the impact of using jet matching techniques in the context of the production of multi-jets processes, in the Standard Model and beyond. Such methods mix the PS simulation and the matrix-element calculation, leading notably to a strong reduction of the sensitivity to parton shower parameterization.

Top quark phenomenology

Top pair and single-top production is investigated, both for SM measurements and BSM searches.

External Collaborators:
J. Campbell (Glasgow, UK), F. Tramontano (Univ. Napoli, Italy),
+ E. Laenen (NIKHEF), S. Frixione (CERN), C. White (NIKHEF)
+ EXP group at CP3 (A. Giammanco, V. Lemaitre,...)

Top quark Physics

We study the phenomenology the top quark at colliders as well as at low energy via loops.

External collaborators: Christophe Grojean, Geraldine Servant, Scott Willenbrock, Benjamin Fuks.

Vector boson + heavy flavors

Various SM backgrounds to new physics or SM measurements are considered.

* Z+heavy quarks + jets @ NLO
* W+heavy quarks + jets @ NLO

Collaborators: J. Campbell (Glasgow, UK), R.K. Ellis (Fermilab, US), S. Willenbrock (UIUC, US),
+ M.L. Mangano (CERN, Switzerland), F. Tramontano (Univ. Napoli, Italy),...

Z' at the LHC

Study of vector boson (very peculiar) phenomenology at the LHC.

In collaboration with Francesco Tramontano (Univ. Napoli,IT) and Valentin Hirschi (EPL, CH)

Publications in CP3
All my publications on Inspire

2017

Trilinear Higgs coupling determination via single-Higgs differential measurements at the LHC
Maltoni, Fabio and Pagani, Davide and Shivaji, Ambresh and Zhao, Xiaoran
[Abstract] [PDF] [Journal] [Full text] Submitted to EPJC.
Refereed paper. 18th September.
Gluon-fusion Higgs production in the Standard Model Effective Field Theory
Deutschmann, Nicolas and Duhr, Claude and Maltoni, Fabio and Vryonidou, Eleni
[Abstract] [PDF] Submitted to JHEP.
Refereed paper. 31st July.

2016

tWH associated production at the LHC
Federico Demartin, Benedikt Maier, Fabio Maltoni, Kentarou Mawatari, Marzo Zaro
to be submitted to JHEP
Refereed paper. 19th July.
Higgs production in association with a top-antitop pair in the Standard Model Effective Field Theory at NLO in QCD
Fabio Maltoni, Eleni Vryonidou, Cen Zhang
to be submitted to JHEP
Refereed paper. 18th July.
Probing the Higgs self coupling via single Higgs production at the LHC
G. Degrassi, P.P. Giardino, F. Maltoni, D. Pagani
[Abstract] [PDF] [Journal] refereed paper
Refereed paper. 14th July.
Signal background interference effects in heavy scalar production and decay to a top-anti-top pair
B. Hespel, F. Maltoni, E. Vryonidou
to be submitted to JHEP
Refereed paper. 13th June.
Resurrecting the Dead Cone
Maltoni, Fabio and Selvaggi, Michele and Thaler, Jesse
[Abstract] [PDF] [Journal] 12 pages, 12 figures
Refereed paper. 1st June.
A comprehensive approach to dark matter studies: exploration of simplified top-philic models
Arina, Chiara and others
[Abstract] [PDF] [Journal]
30th May.
NLO predictions for the production of a (750 GeV) spin-two particle at the LHC
Das, Goutam and Degrande, Celine and Hirschi, Valentin and Maltoni, Fabio and Shao, Hua-Sheng
[Abstract] [PDF] [Journal]
Refereed paper. 28th May.
Anatomy of double heavy-quark initiated processes
Lim, Matthew and Maltoni, Fabio and Ridolfi, Giovanni and Ubiali, Maria
[Abstract] [PDF] [Journal]
Refereed paper. 26th May.
Probing top quark neutral couplings in the Standard Model Effective Field Theory at NLO in QCD
O. Bessidskaia Bylund, F. Maltoni, I. Tsinikos, E. Vryonidou, C. Zhang
[Abstract] [PDF] [Journal] Published in JHEP05(2016)052
Refereed paper. 28th January.

2015

Higher-order QCD predictions for dark matter production at the LHC in simplified models with s-channel mediators
Backović, Mihailo and Krämer, Michael and Maltoni, Fabio and Martini, Antony and Mawatari, Kentarou and Pellen, Mathieu
[Abstract] [PDF] [Journal] 20 pages
Refereed paper. 20th August.
Associated production of a top-quark pair with vector bosons at NLO in QCD: impact on ttH searches at the LHC
Fabio Maltoni, Davide Pagani, Ioannis Tsinikos
[Abstract] [PDF] [Journal] Published in JHEP02(2016)113
Refereed paper. 15th July.
Higgs production in association with a single top quark at the LHC
Demartin, Federico and Maltoni, Fabio and Mawatari, Kentarou and Zaro, Marco
[Abstract] [PDF] [Journal] 16 pages to be submitted to EPJC
Refereed paper. 2nd April.
Tracking down hyper-boosted top quarks
Larkoski, Andrew J. and Maltoni, Fabio and Selvaggi, Michele
[Abstract] [PDF] [Journal] Submitted to JHEP
Refereed paper. 10th March.
Higgs and Z boson associated production via gluon fusion in the SM and the 2HDM
Hespel, B. and Maltoni, F. and Vryonidou, E.
[Abstract] [PDF] [Journal] Submitted to JHEP
Refereed paper. 3rd March.
Signals of a superlight gravitino at the LHC
Maltoni, Fabio and Martini, Antony and Mawatari, Kentarou and Oexl, Bettina
[Abstract] [PDF] [Journal] 23 pages
Refereed paper. 30th January.

2014

A global approach to top-quark flavor-changing interactions
Durieux, Gauthier and Maltoni, Fabio and Zhang, Cen
[Abstract] [PDF] [Journal] 16 pages, to be submitted to PRD.
Refereed paper. 18th December.
Automatic Computations at NLO in QCD for Top-Quark Flavor-Changing Neutral Processes
Degrande, Celine and Maltoni, Fabio and Wang, Jian and Zhang, Cen
[Abstract] [PDF] [Journal] 6 pages, 4 figures.
Refereed paper. 15th December.
Higgs production in association with bottom quarks
Wiesemann, M. and Frederix, R. and Frixione, S. and Hirschi, V. and Maltoni, F. and others
[Abstract] [PDF] [Journal] 33 pages, To be submitted to JHEP
Refereed paper. 16th September.
Top-quark mass effects in double and triple Higgs production in gluon-gluon fusion at NLO
Maltoni, F. and Vryonidou, E. and Zaro, M.
[Abstract] [PDF] [Journal]
Refereed paper. 27th August.
Higgs characterisation at NLO in QCD: CP properties of the top-quark Yukawa interaction
Demartin, Federico and Maltoni, Fabio and Mawatari, Kentarou and Page, Ben and Zaro, Marco
[Abstract] [PDF] [Journal] to be published in EPJC.
Refereed paper. 18th July.
Top-quark charge asymmetry and polarization in ttW production at the LHC
Maltoni, F. and Mangano, M.L. and Tsinikos, I. and Zaro, M.
[Abstract] [PDF] [Journal] Published in physletb.2014.07.033
Refereed paper. 27th May.
The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
Alwall, J. and Frederix, R. and Frixione, S. and Hirschi, V. and Maltoni, F. and others
[Abstract] [PDF] [Journal] to be submitted
Refereed paper. 4th April.
The Top Quark
Liss, T. , Maltoni, F., and Quadt, A.
[Full text] 52 pages, to be published in the Review of Particle Physics (PDG).
Refereed paper. 6th February.
Higgs pair production at the LHC with NLO and parton-shower effects
Frederix, R. and Frixione, S. and Hirschi, V. and Maltoni, F. and Mattelaer, O. and others
[Abstract] [PDF] [Journal] submitted
Refereed paper. 28th January.

2013

Higgs characterisation via vector-boson fusion and associated production: NLO and parton shower effects
Maltoni, Fabio and Mawatari, Kentarou and Zaro, Marco
[Abstract] [PDF] [Journal] Submitted to EPJC
Refereed paper. 23rd November.
Update of the Binoth Les Houches Accord for a standard interface between Monte Carlo tools and one-loop programs
Alioli, S. and Badger, S. and Bellm, J. and Biedermann, B. and Boudjema, F. and others
[Abstract] [PDF] [Journal]
Refereed paper. 23rd November.
Handbook of LHC Higgs Cross Sections: 3. Higgs Properties
Heinemeyer, S and others
[Abstract] [PDF] [Journal] YR3
Contribution to proceedings. 23rd November.
Handbook of LHC Higgs Cross Sections: 3. Higgs Properties
HXSWG with Diogo Buarque Franzosi, Antoine Laureys, Fabio Maltoni, Olivier Mattelaer, Marco Zaro, Cen Zhang, et al...
[Abstract] [PDF] [Journal] 404 pages, YR3
5th July.
A framework for Higgs characterisation
Artoisenet, P. and de Aquino, P. and Demartin, F. and Frederix, R. and Frixione, S. and others
[Abstract] [PDF] [Journal] To be published in JHEP.
Refereed paper. 21st June.
Top-quark decay into Higgs and a light quark at NLO in QCD
Cen Zhang, Fabio Maltoni
[Abstract] [PDF] [Journal] 7 pages.
Refereed paper. 31st May.
Single-top t-channel production with off-shell and non-resonant effects
Papanastasiou, A.S. and Frederix, R. and Frixione, S. and Hirschi, V. and Maltoni, F.
[Abstract] [PDF] [Journal] to be submitted to PLB
Refereed paper. 21st May.
Unravelling tth via the matrix element method
Artoisenet, Pierre and de Aquino, Priscila and Maltoni, Fabio and Mattelaer, Olivier
[Abstract] [PDF] [Journal] refereed paper.
Refereed paper. 13th April.

2012

Top B Physics at the LHC
Oram Gedalia, Gino Isidori, Fabio Maltoni, Gilad Perez, Michele Selvaggi, Yotam Soreq
[Abstract] [PDF] [Journal] Published in PRL.
Refereed paper. 18th December.
Effective field theory approach to the Higgs lineshape
Franzosi, Diogo Buarque and Maltoni, Fabio and Zhang, Cen
[Abstract] [PDF] [Journal] 15 pages. Published in PRD.
Refereed paper. 21st November.
Lifting degeneracies in Higgs couplings using single top production in association with a Higgs boson
M. Farina, C. Grojean, F. Maltoni, E. Salvioni and A. Thamm
[Abstract] [PDF] [Journal] 14 pages. Published in JHEP.
Refereed paper. 18th November.
Three-generation baryon and lepton number violation at the LHC
Gauthier Durieux, Jean-Marc Gérard, Fabio Maltoni and Christopher Smith
[Abstract] [PDF] [Journal] Published in Phys.Lett.B 721 (2013) 82
Refereed paper. 24th October.
Light gravitino production in association with gluinos at the LHC
de Aquino, P. and Maltoni, F. and Mawatari, K. and Oexl, B.
[Abstract] [PDF] [Journal] Published in JHEP.
Refereed paper. 3rd July.
Probing top-Higgs non-standard interactions at the LHC
Degrande, C. and Gerard, J. M. and Grojean, C. and Maltoni, F. and Servant, G.
[Abstract] [PDF] [Journal]
Refereed paper. 8th May.
Closing in on a perturbative fourth generation
Mathieu Buchkremer, Jean-Marc Gérard and Fabio Maltoni
[Abstract] [PDF] [Journal] 23 pages, 6 figures. Published in Journal of High Energy Physics as JHEP 06 (2012) 135.
Refereed paper. 25th April.
b-Initiated processes at the LHC: a reappraisal
Maltoni, Fabio and Ridolfi, Giovanni and Ubiali, Maria
[Abstract] [PDF] [Journal] Published in JHEP.
Refereed paper. 19th March.
Handbook of LHC Higgs Cross Sections: 2. Differential Distributions
LHC Higgs Cross Section Working Group, and others
[Abstract] [PDF] [Journal] CERN Yellow Book
19th January.
Model-independent extraction of |Vtq| matrix elements from top-quark measurements at hadron colliders
Lacker, H. and others
[Abstract] [PDF] [Journal] Published in EPJC.
Refereed paper. 5th January.

2011

Four-lepton production at hadron colliders: aMLO predictions with theoretical uncertainties
Rikkert Frederix, Stefano Frixione, Valentin Hirschi, Fabio Maltoni, Roberto Pittau, Paolo Torrielli
[Abstract] [PDF] [Journal] to be submitted to JHEP.
Refereed paper. 17th October.
Matched predictions for Higgs production via heavy-quark loops in the SM and beyond
Alwall, Johan and Li, Qiang and Maltoni, Fabio
[Abstract] [PDF] [Journal] 7 pages. To be submitted to PRD.
Refereed paper. 7th October.
aMLO predictions for Wjj production at the Tevatron
R. Frederix, S. Frixione, V. Hirshi, F. Maltoni, R. Pittau, P. Torrielli
[Abstract] [PDF] [Journal] to be submitted to JHEP
Refereed paper. 9th September.
Vector boson fusion at NNLO in QCD: SM Higgs and beyond
Bolzoni, Paolo and Maltoni, Fabio and Moch, Sven-Olaf and Zaro, Marco
[Abstract] [PDF] [Journal] Accepted for publication in PRD
Refereed paper. 6th September.
ALOHA: Automatic Libraries Of Helicity Amplitudes for Feynman diagram computations
Priscila de Aquino, William Link, Fabio Maltoni, Olivier Mattelaer, Tim Stelzer
[Abstract] [PDF] [Journal] To be submitted to Computer Physics Communications.
Refereed paper. 3rd August.
Baryon number violation at the LHC: the top option
Dong, Zhe and Durieux, Gauthier and Gerard, Jean-Marc and Han, Tao and Maltoni, Fabio
[Abstract] [PDF] [Journal] Published in Phys.Rev. D85 (2012) 016006.
Refereed paper. 19th July.
Monotops at the LHC
Andrea, Jeremy and Fuks, Benjamin and Maltoni, Fabio
[Abstract] [PDF] [Journal] 4 pages, published Phys. Rev. D 84, 074025 (2011).
Refereed paper. 30th June.
W and Z/gamma* boson production in association with a bottom-antibottom pair
R. Frederix, S. Frixione, V. Hirshi, F. Maltoni, R. Pittau, P. Torrielli
[Abstract] [PDF] [Journal] 18 pages, Published in JHEP.
Refereed paper. 27th June.
Proton-Nucleus Collisions at the LHC: Scientific Opportunities and Requirements
Salgado, C. A. and others
[Abstract] [PDF] [Journal] Published in J. Phys. G: Nucl. Part. Phys. 39 (2012) 015010.
Refereed paper. 25th May.
Scalar and pseudoscalar Higgs production in association with a top-antitop pair
Frederix, Rikkert and others
[Abstract] [PDF] [Journal] 15 pages. Published in PLB.
Refereed paper. 27th April.
MadGraph 5 : Going Beyond
Alwall, Johan and Herquet, Michel and Maltoni, Fabio and Mattelaer, Olivier and Stelzer, Tim
[Abstract] [PDF] [Journal] Published in JHEP06(2011)128
Refereed paper. 16th April.
An effective approach to same sign top pair production at the LHC and the forward-backward asymmetry at the Tevatron
Degrande, Celine and Gerard, Jean-Marc and Grojean, Christophe and Maltoni, Fabio and Servant, Geraldine
[Abstract] [PDF] [Journal] Published in Physics Letters B.
Refereed paper. 11th April.
Automation of one-loop QCD corrections
Hirschi, Valentin and others
[Abstract] [PDF] [Journal] Published in JHEP.
Refereed paper. 24th February.
Handbook of LHC Higgs Cross Sections: 1. Inclusive Observables
LHC Higgs Cross Section Working Group
[Abstract] [PDF] [Journal] Published as a Cern Yellow Report
Refereed paper. 3rd January.

2010

Simulating graviton production at hadron colliders
Priscila de Aquino, Kaoru Hagiwara, Qiang Li, Fabio Maltoni
[Abstract] [PDF] [Journal] [Full text] Published in JHEP, Volume 2011, Number 6, 132,
(DOI: 10.1007/JHEP06(2011)132)

Refereed paper. 23rd December.
Charged Higgs production via vector-boson fusion at NNLO in QCD
Zaro, Marco and Bolzoni, Paolo and Maltoni, Fabio and Moch, Sven-Olaf
[Abstract] [PDF] Proceedings of the "Charged 2010" conference, Uppsala, Sept. 2010.
Contribution to proceedings. 8th December.
Heavy quarkonium: progress, puzzles, and opportunities
Brambilla, N. and others
[Abstract] [PDF] [Journal] QWG report published in EPJC.
Refereed paper. 25th October.
Non-resonant New Physics in Top Pair Production at Hadron Colliders
Céline Degrande, Jean-Marc Gérard, Christophe Grojean, Fabio Maltoni and Géraldine Servant
[Abstract] [PDF] [Journal] Published in JHEP03(2011)125
Refereed paper. 27th September.
Automation of the matrix element reweighting method
Pierre Artoisenet, Vincent Lemaître, Fabio Maltoni, Olivier Mattelaer
[Abstract] [PDF] [Journal] Published in JHEP12(2010)068
Refereed paper. 19th July.
Higgs production via vector-boson fusion at NNLO in QCD
Bolzoni, Paolo and Maltoni, Fabio and Moch, Sven-Olaf and Zaro, Marco
[Abstract] [PDF] [Journal] 4 pages. Published in Phys. Rev. Lett. 105, 011801 (2010).
Refereed paper. 23rd March.
The tools and MC working group. Summary Report from the Les Houches 2009 Workshop on TeV Colliders
Butterworth, J. M. and others
[Abstract] [PDF] Les Houches 2009, Proceedings
Contribution to proceedings. 9th March.
The SM and NLO multileg working group: Summary report
Binoth et al.
[Abstract] [PDF] Les Houches 2009 Proceedings of the NLO WG.
Contribution to proceedings. 8th March.
The Hunt for New Physics at the Large Hadron Collider
P. Nath et al.
[Abstract] [PDF] [Journal] Summary document for international workshop "Beyond the Standard Model at the LHC"
Contribution to proceedings. 18th January.
A proposal for a standard interface between Monte Carlo tools and one-loop programs
Thomas Binoth et al.
[Abstract] [PDF] [Journal] Les Houches Accord in memory of Thomas Binoth. Published in Comput. Phys. Commun.
Refereed paper. 8th January.

2009

Automation of next-to-leading order computations in QCD: the FKS subtraction
Rikkert Frederix, Stefano Frixione, Fabio Maltoni and Tim Stelzer
[Abstract] [PDF] [Journal] Published in JHEP10(2009)003.
Refereed paper. 14th August.
Isolating Wt production at the LHC
Chris D. White, Stefano Frixione, Eric Laenen, Fabio Maltoni
[Abstract] [PDF] [Journal] 31 pages. Published in JHEP 0911:074,2009.
Refereed paper. 4th August.
NLO predictions for t-channel production of single top and fourth generation quarks at hadron colliders
John M. Campbell, Rikkert Frederix, Fabio Maltoni, Francesco Tramontano
[Abstract] [PDF] [Journal] Published in JHEP10(2009)042.
Refereed paper. 22nd July.
A comprehensive approach to new physics simulations
Neil D. Christensen, Priscila de Aquino, Celine Degrande, Claude Duhr, Benjamin Fuks, Michel Herquet, Fabio Maltoni, Steffen Schumann
[Abstract] [PDF] [Journal] Published in Eur. Phys. J. C71 (2011) 1541
Refereed paper. 12th June.
Unconventional phenomenology of a minimal two-Higgs-doublet model
Simon de Visscher, Jean-Marc Gerard, Michel Herquet, Vincent Lemaitre, Fabio Maltoni
[Abstract] [PDF] [Journal] Published in JHEP08(2009)042.
Refereed paper. 3rd April.
t-channel single-top production at hadron colliders
John M. Campbell, Rikkert Frederix, Fabio Maltoni, Francesco Tramontano
[Abstract] [PDF] [Journal] 5 pages. Published in Phys. Rev. Lett. 102, 182003 (2009)
Refereed paper. 28th February.
J/psi production at HERA
Pierre Artoisenet, John Campbell, Fabio Maltoni, Francesco Tramontano
[Abstract] [PDF] [Journal] 4 pages, 2 figures. Published in Phys. Rev. Lett. 102, 142001 (2009)
Refereed paper. 27th January.

2008

MadGraph/MadEvent: A multipurpose event generator
Michel Herquet, Fabio Maltoni
[Full text] Published in Nucl.Phys.Proc.Suppl.179-180:211-217,2008
Contribution to proceedings. 31st December.
QCD radiation in the production of heavy colored particles at the LHC
Johan Alwall, Simon de Visscher, Fabio Maltoni
[Abstract] [PDF] [Journal] Published in JHEP02(2009)017.
Refereed paper. 29th October.
Radiation of Extra-Jets in Inclusive SUSY Samples
Simon de Visscher, Johan Alwall, Fabio Maltoni
[Full text] Proceeding for the talk of S. de Visscher at SUSY08 conference
Contribution to proceedings. 15th September.
Associated production of a W boson and one b jet
J. Campbell, R.K. Ellis, F. Febres Cordero, F. Maltoni, L. Reina, D. Wackeroth, S. Willenbrock
[Abstract] [PDF] [Journal] Published in Phys. Rev. D 79, 034023 (2009)
Refereed paper. 31st July.
Antenna functions from MHV rules
Duhr, Claude and Maltoni, Fabio
[Abstract] [PDF] [Journal] Published in JHEP11(2008)002.
Refereed paper. 17th July.
Upsilon production at the Tevatron and the LHC
P. Artoisenet, J. Campbell, J.P. Lansberg, F. Maltoni, F. Tramontano
[Abstract] [PDF] [Journal] Published in PRL 101 (2008) 152001
Refereed paper. 18th June.
Collider aspects of flavour physics at high Q
del Aguila, F. and others
[Abstract] [PDF] [Journal] Report of Working Group 1 of the CERN Workshop Flavor in the Era of the LHC. Published in Eur.Phys.J.C57:183-308,2008.
Refereed paper. 14th January.

2007

Automatic generation of quarkonium amplitudes in NRQCD
Pierre Artoisenet, Fabio Maltoni, Tim Stelzer
[Abstract] [PDF] [Journal] Published in JHEP02 (2008) 102
Refereed paper. 22nd November.
Top pair invariant mass distribution: a window on new physics
Rikkert Frederix and Fabio Maltoni
[Abstract] [PDF] [Journal] Published in JHEP01(2009)047.
Refereed paper. 25th October.
Madgraph/MadEvent v4: The new web generation
Johan Alwall, Pavel Demin, Simon de Visscher, Rikkert Frederix, Michel Herquet, Fabio Maltoni, Tilman Plehn, David Rainwater, Tim Stelzer
[Abstract] [PDF] [Journal] Published in JHEP 0709:028,2007
Refereed paper. 4th June.
Choosing the factorization scale in perturbative QCD
F. Maltoni, T. McElmurry, R. Putnam, S. Willenbrock
[Abstract] [PDF] Submitted to PRD.
Refereed paper. 14th March.
Hadroproduction of J/psi and Y in association with a heavy-quark pair
P. Artoisenet, J.P. Lansberg, F. Maltoni
[Abstract] [PDF] [Journal] Published in Phys. Lett. B653:60-66,2007
Refereed paper. 12th March.
QCD corrections to J/psi and Y production at hadron colliders
J. Campbell, F. Maltoni, F. Tramontano
[Abstract] [PDF] [Journal] Published in Phys. Rev. Lett. 98, 252002 (2007)
Refereed paper. 6th March.
Comparative study of various algorithms for the matching of parton showers and matrix elements in hadronic collisions
J. Alwall, et al.
[Abstract] [PDF] [Journal] Published in Eur. Phys. J. C53 (2008) 473-500.
Refereed paper. 9th February.
Higgs boson production in association with a photon in vector boson fusion at the LHC
E. Gabrielli, F. Maltoni, B. Mele, M. Moretti, F. Piccinini, R. Pittau
[Abstract] [PDF] [Journal] Published in Nucl. Phys. B781:68-84,2007.
Refereed paper. 6th February.

2006

Les houches physics at TeV colliders 2005, standard model and Higgs working group: Summary report
Buttar, C. and others
[Abstract] [PDF] Published in the report (2006)
Contribution to proceedings. 13th April.
Analysis of charmonium production at fixed-target experiments in the NRQCD approach
Maltoni, F. and others
[Abstract] [PDF] [Journal] Published in Phys. Lett. B638 (2006) 202-208
Refereed paper. 25th January.
HERA and the LHC - A workshop on the implications of HERA for LHC physics: Proceedings Part A
Alekhin, S. and others
[Abstract] [PDF] Published in the Proceedings Part A (2005)
Contribution to proceedings. 2nd January.
Production of a W boson and two jets with one b-quark tag
J. Campbell, R.K. Ellis, F. Maltoni, S. Willenbrock
[Abstract] [PDF] [Journal] Phys.Rev.D75:054015,2007.
Refereed paper. 22nd September.
A standard format for Les Houches Event Files
J. Alwall et al.
[Abstract] [PDF] [Journal] Published in Comput.Phys.Commun.176:300-304,2007.
Refereed paper. 16th September.
SM and MSSM Higgs boson production cross sections at the Tevatron and the LHC
T. Hahn, S. Heinemeyer, F. Maltoni, G. Weiglein, S. Willenbrock
[Abstract] [PDF] Contribution to the TeV4LHC workshop 2005-2006
Contribution to proceedings. 19th July.
Color-dressed recursive relations for multi-parton amplitudes
Claude Duhr, Stefan Hoeche, Fabio Maltoni
[Abstract] [PDF] [Journal] Published in JHEP 0608:062,2006
Refereed paper. 29th June.
Is Vtb=1?
J. Alwall, R. Frederix, J.-M.Gerard, A. Giammanco, M. Herquet, S. Kalinin, E. Kou, V. Lemaitre, F. Maltoni
[Abstract] [PDF] [Journal] Published in Eur.Phys.J.C.49 (2007) 791
Refereed paper. 29th June.

2005

Production of a Z boson and two jets with one heavy- quark tag
Campbell, John M. and Ellis, R. Keith and Maltoni, F. and Willenbrock, S.
[Abstract] [PDF] [Journal] Published in Phys. Rev. D73 (2006) 054007
Refereed paper. 27th October.


[UCLouvain] - [SST] [IRMP] - [SC]
Contact : Jérôme de Favereau
Research
Job opportunities EOS be.h : 10 PhD positions
Postdoctoral position: Data Analysis and GTK operation for NA62 experiment
Postodoctoral position in precision and BSM Phenomenology
Postdoctoral Position in Precision Computations for the LHC