Contact
Name
Andrea Giammanco
Position
Professor
Email
andrea.giammancclouvain.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 3221
Office
My personal homepage
UCL member card
People responsibilities
Postdocs
Hamed Bakhshiansohi (MOVE-IN), member since January 2016
My main interest is to search for top-Higgs anomalous couplings in single-top plus Higgs events, where the Higgs boson decays to two photons using the CMS experiment data. This is the only process that can determine the relative sign of the Higgs boson couplings to other bosons and fermions, at the leading order. The Higgs boson’s decay to photons is expected to have the highest sensitivity among other Higgs decay modes, as the branching ratio of the H→γγ also changes by modifying the Higgs couplings to top-quark and W-boson.

Pieter David (FNRS), member since February 2016
Experimental particle physicist, member of the CMS collaboration. Currently working on measurements of processes involving top quarks in order to constrain higher-order EFT operators.

PhD students
Georgios Konstantinos Krintiras (UCL-FSR), member since February 2015
Experimentalist in the realm of the CMS experiment at LHC, Geneva. I am studying processes involving single top quarks which provide direct probes of electroweak interactions. The second (2015-2018) operational period of LHC, with an expected luminosity of at least four times greater than its first round, will boost the sensitivity of the associated production of single top quarks with Higgs bosons. Such a process offers a stringent test for the SM predictions and serves as an excellent opportunity for identifying departures from this standard picture. Also, I am performing studies within fast detector simulations, i.e. in the context of CMS FastSim.

Sophie Wuyckens (FNRS), member since July 2017
Development of a compact and portable gaseous detector for "muography", i.e. imaging with cosmic rays. Data analysis in the CMS experiment.

Former members
Abideh Jafari (FNRS), Postdoc in CP3 from April 2014 to December 2016
Current position: Fellow at CERN.

Matthias Komm (FRIA), PhD student in CP3 from April 2013 to September 2017
Current position: Postdoc at Imperial College, London (UK).

Andrey Popov (FRIA), PhD student in CP3 from November 2012 to October 2015
Current position: Postdoc at IPNL (Lyon, France).

Research statement
Broadly speaking, I am interested into:

# Analysis of CMS data at LHC; more specifically:
* Top quark physics: the sixth quark is quite unusual (who ordered that 175 GeV monster?). Could it be the key to unlock the mystery of what's beyond the Standard Model? I have been recently (Sep.2014-Aug.2016) leading the CMS group devoted to that.
* Higgs boson couplings (with the top quark and with new particles): being the last particle to have been discovered, and by far the most crucial of them all, it is rather natural to check if that famous 125 GeV resonance tells us something that we did not expect. Since Jan.2018, I am one of the coordinators of the work package "Higgs coupling determination and interpretation" of the be.h Belgian HEP consortium.
* Unusual signatures of new physics: our multi-purpose detectors were optimized for as many interesting signatures as possible, but I like when someone proposes original ways to use them, that can actually cover some blind spot of traditional searches.
# Muography, i.e., the application of HEP detectors and techniques for mapping the interior of large structures using atmospheric muons from cosmic ray showers.
# Parametric HEP detector simulations.
# Some forays into HEP phenomenology, in collaboration with theorists.
# Applied statistics (machine learning, unfolding, etc.)
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.

Angular asymmetries in ttW production

We take advantage of the large statistics being recorded by the CMS experiment in Run 2 to launch a systematic study of angular asymmetries in the ttW process, which have a potentially large sensitivity to non-SM effects.
In synergy with the CP3 phenomenology group, we aim at reporting our results in a form that can be easily translated in EFT constraints.

Development of a framework for fast simulation of a generic collider experiment: Delphes

Observability of new phenomenological models in High Energy experiments is delicate to evaluate, due to the complexity of the related detectors, DAQ chain and software. Delphes is a new framework for fast simulation of a general purpose experiment. The simulation includes a tracking system, a magnetic field, calorimetry and a muon system, and possible very forward detectors arranged along the beamline. The framework is interfaced to standard file format from event generators and outputs observable analysis data objects. The simulation takes into account the detector resolutions, usual reconstruction algorithms for complex objects (FastJet) and a simplified trigger emulation. Detection of very forward scattered particles relies on the transport in beamlines with the Hector software.

Fast Simulation of the CMS experiment

A framework for Fast Simulation of particle interactions in the CMS detector (FastSim) has been developed and implemented in the overall simulation, reconstruction and analysis framework of CMS. It produces data samples in the same format as the one used by the Geant4-based (henceforth Full) Simulation and Reconstruction chain; the output of the Fast Simulation of CMS can therefore be used in the analysis in the same way as data and Full Simulation samples. FastSim is used in several physics analyses in CMS, in particular those requiring a generation of many samples to scan an extended parameter space of the physics model (e.g. SUSY) or for the purpose of estimating systematic uncertainties. It is also used by several groups to design future sub-detectors for the Phase-II CMS upgrades.
Related activities at UCL include the integration with the Full Simulation in the simulation of the electronic read-out ("digitization") and of the pileup of events from other proton-proton collisions, both in-time and out-of-time; the performance monitoring; and the overall maintenance and upgrade of the tracking-related code. Matthias Komm is current L3 convener of Tracking in FastSim, and Andrea Giammanco has been main responsible of the FastSim project from 2011 to 2013.

Imaging with cosmic-ray muons

The general goal of this project is to develop muon-based radiography or tomography (“muography”), an innovative multidisciplinary approach to study large-scale natural or man-made structures, establishing a strong synergy between particle physics and other disciplines, such as geology and archaeology.
Muography is an imaging technique that relies on the measurement of the absorption of muons produced by the interactions of cosmic rays with the atmosphere.
Applications span from geophysics (the study of the interior of mountains and the remote quasi-online monitoring of active volcanoes) to archaeology and mining.

We are part of the EU-funded H2020 network INTENSE where we coordinate the Muography work package, which brings together particle physicists, geophysicists, archaeologists, civil engineers and private companies for the development and exploitation of this imaging method.

We are using the local facilities at CP3 for the development of high-resolution portable detectors.
We also participate to the MURAVES collaboration, now merged into the MIVAS collaboration, through algorithmic and data-analysis aspects like the implementation of time-of-flight capabilities, the analysis of control data for the optimization of the reconstruction algorithms, and the understanding of physics and instrumental backgrounds by data-driven and simulation techniques.

External collaborators: UGent; INTENSE Research & Innovation Staff Exchange network (Japan, Switzerland, Italy, France, Hungary); MIVAS Collaboration (France and Italy) including CNRS (France), INFN (Italy), INGV(Italy).

Luminosity calibration of the CMS detector

We contribute to the offline absolute calibration of the luminometry system of the CMS detector, by analysing the dedicated "Van der Meer scan" data at different center-of-mass energies and collision types (p-p, p-Pb, Pb-Pb).

As a related task, we also contribute to the data-driven inference of the true amount of "pile-up" collisions.

External collaborators: CMS Luminosity Physics Object Group.

Search for exotic decays of the Higgs boson to a pair of new light bosons with two muons and two b jets in final states

We search for exotic decays of a Higgs boson to a pair of new light bosons, H->a1a1, where one of the light bosons decays to a pair of muons and the other one decays to a pair of b quarks. Such signatures are predicted in a number of well motivated extensions of the standard model, including the next-to-minimal supersymmetry and generic two Higgs doublet models with an additional scalar singlet.

Single top studies at LHC

The electroweak production cross section of single top quarks is an important measurement for LHC, being a potential window on "new physics" effects.
Past achievements of this group include the very first measurement at 7 TeV (in t channel) with 2010 data, followed by the most precise inclusive cross section measurements of t-channel cross section at 7, 8 and 13 TeV, and the first differential measurements at 13 TeV; the most precise |Vtb| extraction from single top in the world; the first measurement of W-helicity fractions in a single-top topology; the first observation of the tW production mode; the first measurement of single-top polarization in t channel; stringent limits on anomalous tWb, tgu, tgc couplings.

External collaborators: CMS collaboration.

Testing the sign of the coupling of the new H(125) boson to top quarks with the CMS data

During 2012, the CMS and ATLAS collaborations independently reported unambiguous evidence of the existence of a new particle of mass around 125 GeV.
Several analyses are ongoing to challenge the hypothesis that the new particle is the SM Higgs. We focus on the search for its production in association with a single top quark. Due to an effect of quantum interference, this process is strongly suppressed in the Standard Model while it gets enhanced if its couplings to the top quark and to the W boson have opposite sign. An observation of this production mode would therefore be a convincing proof that this new particle does not belong to the Standard Model.
We published the first search for this process using 8 TeV data, and we expect to achieve sensitivity to anomalous values of the top Yukawa phase during the LHC Run-II.

External collaborators: CMS collaboration.

Top quarks in Heavy Ion collisions and other non-standard LHC datasets

The top quark, being the heaviest known elementary particle, is a powerful tool to test QCD.
The study of top quark pair production in Heavy Ion collisions at the LHC, making use of the dedicated Pb-Pb and p-Pb runs, will open a new road in the investigation of the Quark-Gluon Plasma.

This research project started with the first measurement of top-pair cross section in pp collisions at 5.02 TeV, taking advantage of a "reference run" in Nov.2015. This measurement, in addition to being useful as a reference for measurements in Pb-Pb and p-Pb collisions at the same center-of-mass energy per nucleon, also provides a significant broadening of the lever arm for global PDF fits making use of top-quark data.

More recently we reported the first observation of top quark production in p-Pb collisions, using the data at 8.16 TeV taken in Nov.2016, testing the models of nuclear modification of the gluon PDF at high Bjorken-x.

We are now preparing future analyses in PbPb collisions. We are also interested in differential analyses in pPb collisions (to constrain nuclear PDFs) and in searches in central exclusive production pp events.

External collaborators: David D'Enterria, Pedro Silva and Marta Verweij (CERN).

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.

CMS Tracker commissioning at the Magnet Test Cosmic Challenge

The so called Magnet Test Cosmic Challenge (MTCC) was the first comprehensive operational and functional test of the CMS experiment. the MTCC took place in the first months of 2006 and was a slice test in which a small fraction of all the CMS detection equipment was operated in the 4 T solenoid of the experiment. Cosmic rays detected in the muon chambers were used to trigger the readout of all detectors in the global CMS data acquisition system. Prior to data taking, the detectors and their readout electronics were tuned and synchronized with dedicated software procedures. Local reconstruction was carried out online and offline in all sub-detectors for event selection and monitoring purposes. Global reconstruction, linking different sub-detectors, was performed mainly offline. A number of monitoring and visualization tools were also used for validation purposes and monitoring. One of the main goals of the MTCC was the validation of the hardware alignment system functionality.
At the MTCC, UCL had a leading role in the preparation, operation and offline data analysis related to the silicon strip tracker detector.

Early observation of top quark pairs in the dileptonic final state

The top quark is the heaviest elementary particle discovered so far, and many properties related to this quark are still to be understood.
Its observation and mass measurement at Tevatron highlighted the uncommon nature of this quark. The fact that its electroweak decay is faster than the hadronization time scale implies that the top quark exists only as a free quark, so that the effects from new physics should show up very clearly by comparing measurements with the precise Standard Model preditions.
Its "re-discovery" at LHC will be a major milestone for the experiments, since the complexity of the final state demands a fairly good knowledge of the experimental apparatus and a certain degree of control of the backgrounds. Its expected large coupling to Higgs bosons will also be relevaant for the searches for higgs sectors beyond the Standard Model.

External collaborators: CMS collaboration.

Search for Higgs boson(s) in CMS at the LHC in the llbb+MET topology

Search for Higgs boson(s) within the Standard Model and beyond and also withing a minimal extension of the scalar sector (2HDM).

The final state under study is a lepton pair associated with two b-jets and missing transverse energy. This topology is sensitive to a light SM Higgs via the H(bb)H(WW) production (via loop or Higgs self-coupling diagrams) and via the associated production of ttbar pairs and invisible particles. Requiring additional b jets (thus defining the llbbbb+MET final state) allows also the very interesting studies of a standard model Higgs produced in association with a top quark pair and It is also sensitive to the production of non standard heavy Higgs bosons decaying into ZA or WA, in the WAWA and ZAZA channels.

In particular, we are studying both resonant and non-resonant Higgs-pair production.

External collaborators: CMS collaboration.

Simulation of the CMS silicon tracker

The Tracker Simulation group is responsible for the Geant-based simulation of the Pixel and Strip Tracker response, material budget and geometry description.
Members from CP3 are concentrating on various aspects of the validation with data. We also share the convenership of the group.

External collaborators: CMS tracker collaboration.

Triggers for top quark physics

Our group is involved in the trigger design and maintenance for the LHC Run II in order to select the most interesting collision events for topologies with a lepton and a b quark with the CMS detector. Given the final state, this trigger is of particular interest for top quark physics, but it is also relevant to many other analyses (including the single top plus Higgs search ongoing in our group). Studies are carried out to implement the latest CMS developments in physics object definitions into the trigger path as well as to optimize the selections for the best efficiency and the rate possible. Our group is responsible for the b-tagging part together with organizing the whole activities within the CMS top quark group. Andrey Popov is official contact person between the Top Quark group and the Trigger group.

External collaborators: CMS TOP PAG, CMS TSG.

Validation of a fully automatic matrix element technique for CMS data analyses

The matrix element reweighting method attempts to compute the full likelihood of an observed event given a theoretical model. The method therefore measures the degree of compatibility of the event with the given model using as much information as available. MadWeight is a tool that fully automatize the computation of the event likelihood for any model implemented in MadGraph, by performing phase-space integration and providing a framework for taking into account the experimental resolution on the observed final state objects.
This project aims at validating the matrix element reweighting technique implemented in MadWeight on a number of benchmark searches. In some cases, the final goal is the efficient identification of background events. The final states that are being considered are: Zbb, single top, ttbar resonances and dimuon resonances.

Publications in CP3
All my publications on Inspire

2018

Model-independent constraints on the CKM matrix elements $|V_{tb}|$, $|V_{ts}|$ and $|V_{td}|$
Clerbaux, Barbara and Fang, Wenxing and Giammanco, Andrea and Goldouzian, Reza
[Abstract] [PDF] Submitted to JHEP.
Refereed paper. 9th August.
Search for the associated production of a Higgs boson and a single top quark in pp collisions at sqrt(s)=13 TeV
CMS Collaboration
[Full text] Physics Analysis Summary HIG-18-009, Presented at the XXXIX International Conference on High Energy Physics, ICHEP 2018, Seoul, South Korea, 4-11 July, 2018
Public experimental note. 6th July.
A portable muon telescope based on small and gas-tight Resistive Plate Chambers
Wuyckens, Sophie and Giammanco, Andrea and Demin, Pavel and Cortina Gil, Eduardo
[Abstract] [PDF] Proceedings of the "Cosmic-Ray Muography" meeting of the Royal Society, 14-15 May 2018 at the Kavli Royal Society Centre, Chicheley Hall, Newport Pagnell (UK). Submitted to Philosophical Transactions of the Royal Society A.
Contribution to proceedings. 18th June.

2017

The Phase-2 Upgrade of the CMS Tracker
CMS collaboration
[Full text] CERN-LHCC-2017-009 ; CMS-TDR-014
Refereed paper. 13th December.
TOP2017: Experimental Summary
Giammanco, Andrea
[Abstract] [PDF] Proceedings of the TOP2017 conference.
Contribution to proceedings. 6th December.
Measurement of the inclusive $ mathrm{t}overline{mathrm{t}} $ cross section in pp collisions at $ sqrt{s}=5.02 $ TeV using final states with at least one charged lepton
Sirunyan, A. M. and others
[Abstract] [PDF] [Journal]
Refereed paper. 10th November.
Single top-quark production at the Tevatron and the LHC
Giammanco, Andrea and Schwienhorst, Reinhard
[Abstract] [PDF] [Journal] Invited review paper.
Refereed paper. 25th October.
Working Group 5: Physics with Heavy Flavours
Giammanco, Andrea and Gauld, Rhorry and Pearce, Alex
[Abstract] [PDF] Proceedings of the 25th International Workshop on Deep Inelastic Scattering and Related Topics (DIS 2017), 3-7 April 2017, University of Birmingham, UK
Contribution to proceedings. 12th October.
Observation of top quark production in proton-nucleus collisions
Sirunyan, Albert M and others
[Abstract] [PDF] [Journal]
Refereed paper. 22nd September.
Object definitions for top quark analyses at the particle level
CMS Collaboration
[Full text] CERN-CMS-NOTE-2017-004
Public experimental note. 6th June.
Inclusive tt cross section at sqrt(s)=5.02 TeV using final states with at least one charged lepton
CMS collaboration
[Full text] CMS Physics Analysis Note TOP-16-023, presented at the 25th edition of DIS, Birmingham
4th April.
Search for light bosons in decays of the 125 GeV Higgs boson in proton-proton collisions at sqrt(s) = 8 TeV
Khachatryan, Vardan and others
[Abstract] [PDF] [Journal]
Refereed paper. 10th January.

2016

Cross section measurement of $t$-channel single top quark production in pp collisions at $sqrt s =$ 13 TeV
Sirunyan, Albert M and others
[Abstract] [PDF] [Journal] Most precise measurement of the single-top cross section at 13 TeV.
Refereed paper. Public experimental note. 4th October.
First measurement of the top quark pair production cross section in proton-proton collisions at sqrt(s)=5.02 TeV
CMS collaboration
[Full text] CMS Physics Analysis Note TOP-16-015, presented at LHCP2016
Public experimental note. 16th June.
Combination of cross-section measurements of associated production of a single top quark and a W boson at sqrt(s)=8 TeV with the ATLAS and CMS experiments
ATLAS and CMS collaborations
[Full text] ATLAS-CONF-2016-023 and CMS-PAS-TOP-15-019 (double reference, as it is a joint note)
Public experimental note. 24th May.
Measurement of the differential cross section for t-channel single-top-quark production at sqrt(s)=13 TeV
CMS Collaboration
[Full text] CMS Physics Analysis Summary CMS-TOP-16-004
Public experimental note. 27th April.
Measurement of the inclusive cross section of single top-quark production in the t-channel at 13 TeV
CMS collaboration
[Full text]
Public experimental note. 25th March.
Search for exotic decays of the Higgs boson to a pair of new light bosons with two muon and two b jets in final states
CMS Collaboration
[Full text]
Public experimental note. 3rd March.

2015

Single top quark production at the LHC
Andrea Giammanco
[Abstract] [PDF] [Journal] [Full text] Published in Reviews in Physics Vol. 1, no.1, p. 1 (January 2016)
Refereed paper. 23rd November.
Measurement of top quark polarisation in t-channel single top quark production
Khachatryan, Vardan and others
[Abstract] [PDF] [Journal] JHEP 04 (2016) 073
Refereed paper. 9th November.
Measurement of the top quark pair production cross section in proton-proton collisions at $sqrt(s) =$ 13 TeV
Khachatryan, Vardan and others
[Abstract] [PDF] [Journal] Phys. Rev. Lett. 116 (2016) 052002
Refereed paper. 20th October.
Search for the associated production of a Higgs boson with a single top quark in proton-proton collisions at $ sqrt{s}=8 $ TeV
Khachatryan, Vardan and others
[Abstract] [PDF] [Journal]
Refereed paper. 29th September.
Measurement of the t-channel single top-quark cross section at 13 TeV
CMS collaboration
[Full text] Physics Analysis Summary TOP-15-004
Public experimental note. 14th September.
First measurement of the differential cross section for ttbar production in the dilepton final state at sqrt(s) = 13 TeV
CMS collaboration
[Full text] Physics Analysis Summary CMS-TOP-15-010
Public experimental note. 1st September.
Measurement of the top quark pair production cross section in proton-proton collisions at sqrt(s) = 13 TeV with the CMS detector
CMS collaboration
[Full text] Physics Analysis Summary CMS-TOP-15-003
Public experimental note. 1st September.
First look at top-quark selections with 13 TeV data
CMS collaboration
[Full text] CMS Detector Performance Note released in occasion of the EPS-HEP 2015 conference
Public experimental note. 24th July.
Heavy baryons as polarimeters at colliders
Mario Galanti, Andrea Giammanco, Yuval Grossman, Yevgeny Kats, Emmanuel Stamou, Jure Zupan
[Abstract] [PDF] [Journal] [Full text] Published in Journal of High Energy Physics Vol. 2015, no.11, p. 067 (November 2015)
Refereed paper. 14th May.

2014

Measurement of the W boson helicity in events with a single reconstructed top quark in pp collisions at sqrt(s) = 8 TeV
Khachatryan, Vardan and others
[Abstract] [PDF] [Journal] [Full text] JHEP 01 (2015) 053
Refereed paper. 7th October.
Search for $H\to b\bar b$ in association with single top quarks as a test of Higgs couplings
CMS Collaboration
[Full text] CMS Physics Analysis Summary HIG-14-015
Public experimental note. 30th September.
Analysis of t-channel single top-quark production with Bayesian neural networks in CMS experiment at sqrt(s) = 7 TeV with L = 5/fb
E. Boos, V. Bunichev, L. Dudko, N. Tsirova, A. Markina, M. Perfilov, A. Popov, I. Myagkov, I. Shvetsov, G. Vorotnikov, S. Bitioukov, D. Konstantinov, A. Giammanco, J. Hansen, J. Komaragiri, D. Martschei, Th. Muller, J. Ott, T. Peiffer, S. Rocker, J. Wagner-Kuhr, A. O. M. Iorio, M. Merola, L. Lista, A. Jafari
[Full text] Analysis Note AN-2012/291 in support of CMS-TOP-14-007
Private experimental note. 12th June.
Measurements of top-quark properties at the LHC
Andrea Giammanco
Conference Report CMS CR-2013/259.
Contribution to proceedings. 9th June.
The Fast Simulation of the CMS Experiment
Andrea Giammanco
[Full text] Proceedings of the 20th International Conference on Computing in High Energy and Nuclear Physics (CHEP2013)

Journal of Physics: Conference Series 513 (2014) 02201

Contribution to proceedings. 9th June.
Update to the measurement of top quark polarization in t-channel single-top production
T. Chwalek, A. Giammanco, M. Kadastik, M. Komm, D. Konstantinov, J. Pata, S. Rocker, A. Tiko, F. Roscher, J. Wagner-Kuhr
Analysis Note AN-2014/001 in support of the paper for CMS-TOP-13-001. Update of AN-2012-448.
Private experimental note. 9th June.
W-helicity measurement in single-top event topology with lepton+jets final states using 19.7 fb^{-1} of LHC data collected by CMS at sqrt(s)=8 TeV
A. Jafari, A. O. Iorio, J. D'Hondt, J. Wagner Kuhr, L. Lista, R. Gonzalez Suarez, A. Giammanco
[Full text] CMS internal document supporting TOP-12-020 paper draft
Private experimental note. 7th June.
Search for H->bb in association with single top quarks as a test of Higgs boson couplings
A. Anuar, A. Bean, K. Bloom, C. Boeser, T. Chwalek, S. Fink, A. Giammanco, R. Gonzalez Suarez, D. Knowlton, J. Komaragiri, M. Komm, B. Maier, D. Noonan, A. Popov, J. Wagner-Kuhr
[Full text] Analysis Note AN-2013/113 in support of CMS-HIG-14-015
Private experimental note. 7th June.
Observation of the associated production of a single top quark and a $W$ boson in $pp$ collisions at $sqrt s = $8 TeV
Chatrchyan, Serguei and others
[Abstract] [PDF] [Journal] Phys. Rev. Lett. 112 (2014) 231802
Refereed paper. 18th January.

2013

Measurement of top quark polarization in t-channel single-top production
T. Chwalek, A. Giammanco, A. O. M. Iorio, M. Kadastik, M. Komm, D. Konstantinov, J. Pata, M. Piibeleht, A. Popov, L. Rebane, A. Remm, S. Roecker, A. Tiko, F. Roscher, J. Wagner-Kuhr
[Full text] Supporting note for CMS-TOP-13-001
Private experimental note. 23rd September.
Measurement of top quark polarization in t-channel single-top production
CMS Collaboration
[Full text] Physics Analysis Summary
Public experimental note. 23rd September.
DELPHES 3, A modular framework for fast simulation of a generic collider experiment
de Favereau, J. and others
[Abstract] [PDF] [Journal] Published in JHEP
Refereed paper. 25th July.
Measurement of W-helicity fractions in single top events topology
CMS Collaboration
[Full text] CMS-TOP-12-020
Public experimental note. 7th March.
Single Top as Window on Heavy Quarks and Other New Physics
Andrea Giammanco
[Full text] Advances in High Energy Physics
Volume 2013 (2013), Article ID 848491, 8 pages

Refereed paper. 14th February.

2012

Fast Simulation of the CMS Detector at the LHC
Rahmat Rahmat and Andrea Giammanco
[Full text] Presented at CHEP 2012: International Conference on Computing in High Energy and Nuclear Physics
Contribution to proceedings. 28th September.
Measurement of the single-top t-channel cross section in pp collisions at centre-of-mass energy of 8 TeV
CMS Collaboration
[Full text]
Public experimental note. 28th September.
Les Houches 2011: Physics at TeV Colliders New Physics Working Group Report
Brooijmans, G. and others
[Abstract] [PDF] Contribution to the study of top-antitop asymmetry in a model with effective axial-vector coupling of the gluon.
Contribution to proceedings. 28th September.
Measurement of the single-top-quark t-channel cross section in pp collisions at sqrt(s) = 7 TeV
CMS Collaboration
[Abstract] [PDF] [Journal]
Refereed paper. 28th September.
Evidence for associated production of a single top quark and W boson in pp collisions at 7 TeV
CMS Collaboration
[Abstract] [PDF] [Journal] Submitted to PRL
Refereed paper. 28th September.
Measurement of the Z/gamma*+b-jet cross section in pp collisions at 7 TeV
Chatrchyan, SergueiProg. Part. Nucl. Phys. and others
[Abstract] [PDF] [Journal] [Full text] Published in the Journal of High Energy Physics
Refereed paper. 10th April.
Top quark physics prospects with 10 fb^{-1} at 7 TeV
Giammanco, Andrea
[Abstract] [PDF] Proceedings of the Workshop TOP2011: 4th International Workshop on Top Quark Physics, Sant Feliu de Guixols, Spain, September 25 - 30, 2011
Contribution to proceedings. 24th January.

2011

Search for single top tW associated production in the dilepton decay channel in pp collisions at sqrt(s)=7 TeV
CMS collaboration
[Full text] Physics Analysis Summary TOP-11-022
Public experimental note. 28th September.
Measurement of the t-channel single top quark production cross section in pp collisions at sqrt(s) = 7 TeV
Chatrchyan, Serguei and others
[Abstract] [PDF] [Journal] Published in Phys. Rev. Lett. 107 (2011) 091802
Refereed paper. 16th June.
Search for High-Mass Resonances Decaying to Muon Pairs with 40 pb-1 of Collisions Gathered at sqrt(s) = 7 TeV
S. Basegmez, G. Bruno, D. Pagano et al.
[Full text]
Private experimental note. 9th February.
Search for Resonances in the Dilepton Mass Distribution in pp Collisions at sqrt(s) = 7 TeV
The CMS Collaboration
[Abstract] [PDF] [Journal] [Full text] Submitted to JHEP
Refereed paper. 8th February.
Studies of Tracker Material
The CMS Collaboration
[Full text]
Public experimental note. 8th February.
Search for Heavy Stable Charged Particles in pp collisions at sqrt(s) = 7 TeV
The CMS Collaboration
[Abstract] [PDF] [Journal] Published in JHEP
Refereed paper. 8th February.
Test of Lepton Flavour Universality in K+ → l+ν Decays
CERN NA62 collaboration: C. Lazzeroni et al.
[Abstract] [PDF] [Journal] Submitted to Physics Letters B.
Refereed paper. 27th January.

2010

Latest results from the CMS experiment
A. Giammanco
[Journal] [Full text] CERN-CMS-CR-2010/175. J. Phys.: Conf. Ser. {\bf 259} (2010) 012056. In: PASCOS2010: 16th International Symposium on Particles Strings and Cosmology, 19-23 Jul 2010, IFIC Valencia, Valencia (Spain).
Contribution to proceedings. 31st December.
Particle identification by ionization energy loss in the CMS Silicon Strip Tracker
A. Giammanco
[Full text] CERN-CMS-CR-2010/177. In: JET2010: Jets in proton-proton and heavy-ion collisions, 12-14 Aug 2010, Czech Technical University, Prague (Czech Republic).
Contribution to proceedings. 31st December.
Measurement of the ttbar cross section in the dileptonic channels with track-jets at 7 TeV
J. Caudron, A. Giammanco, A. Pin, V. Lemaitre
[Full text] Analysis Note 2010/195
Private experimental note. 31st December.
First Measurement of the Cross Section for Top-Quark Pair Production in Proton-Proton Collisions at sqrt(s)=7 TeV
CMS collaboration
[Abstract] [PDF] [Journal] Published in Physics Letters B
Refereed paper. 31st December.
Selection of Top-Like Events in the Dilepton and Lepton-plus-Jets Channels in Early 7 TeV Data
CMS collaboration
[Full text] CMS Physics Analysis Summary
Public experimental note. 31st December.
CMS Tracking Performance Results from early LHC Operation
CMS collaboration
[Abstract] [PDF] [Journal] [Full text] Published in Eur.Phys.J.C70:1165-1192,2010.
Refereed paper. 21st December.
Track-Jets Results with √s=7 TeV pp Collisions
J. Caudron, A. Giammanco, A. Hinzmann, T. Klimkovich, P. Azzurri, S. Lowette, D. Dobur
[Full text] CMS Analysis Note
Private experimental note. 29th July.
Commissioning of TrackJets in pp Collisions at $\sqrt{s} =$ 7 TeV
The CMS Collaboration
[Full text] CMS Physics Analysis Summary
Public experimental note. 29th July.

2009

Alignment of the CMS Silicon Tracker during Commissioning with Cosmic Rays
CMS Collaboration
[Abstract] [PDF] [Journal] [Full text] CMS PAPER CFT-09-003
Published in JINST

Refereed paper. 26th December.
Commissioning and Performance of the CMS Pixel Tracker with Cosmic Ray Muons
CMS Collaboration
[Abstract] [PDF] [Journal] [Full text] CMS-CFT-09-001.
Published in JINST

Refereed paper. 26th December.
Commissioning of the CMS Experiment and the Cosmic Run at Four Tesla
CMS Collaboration
[Abstract] [PDF] [Journal] [Full text] Published in JINST
Refereed paper. 21st December.
CMS Data Processing Workflows during an Extended Cosmic Ray Run
CMS Collaboration
[Abstract] [PDF] [Journal] [Full text] Published in JINST
Refereed paper. 21st December.
Commissioning and Performance of the CMS Silicon Strip Tracker with Cosmic Ray Muons
CMS Collaboration
[Abstract] [PDF] [Journal] [Full text] Published in JINST
Refereed paper. 21st December.
Stand-alone Cosmic Muon Reconstruction Before Installation of the CMS Silicon Strip Tracker
CMS Tracker Collaboration (W. Adam et al.).
[Abstract] [PDF] [Journal] [Full text] Published in JINST 4:P05004,2009
Refereed paper. 21st December.
Alignment of the CMS Silicon Strip Tracker during stand-alone Commissioning.
W. Adam et al.
[Abstract] [PDF] [Journal] Published in JINST 4:T07001,2009
Refereed paper. 21st December.
From the LHC to Future Colliders
De Roeck, A. and others
[Abstract] [PDF] [Journal] Proceeding of the workshop "From the LHC to Future Colliders"
Contribution to proceedings. 21st October.
Expectations for observation of top quark pair production in the dilepton final state with the early CMS data at $\sqrt{s} =$ 10 TeV
The CMS Collaboration
[Full text] CMS Physics Analysis Summary
Public experimental note. 8th July.
Track-based measurement of top-quark pair events in the dileptonic channels with the first data of CMS
J. Caudron, A. Giammanco, V. Lemaitre
[Full text] CMS Analysis Note
Private experimental note. 8th July.
Prospects for the measurement of the single-top $t$-channel cross section in the muon channel with 200~pb$^{-1}$ of CMS data at 10 TeV
The CMS Collaboration
[Full text] Physics Analysis Summary
Public experimental note. 8th July.
Towards a measurement of single-top cross section in the t-channel, with the first inverse femtobarn of CMS data at 14 TeV
A. Giammanco, J. Weinelt, T. Mueller, J. Wagner-Kuhr, P. Sturm, W. Wagner, D. Konstantinov, V. Molchanov, A. Jafari, M. Mohammadi Najafabadi, E. Boos, L. Dudko, A. Markina
[Full text] CMS Analysis Note
Private experimental note. 8th July.

2008

The Top Quark Analysis Framework
Maria Hansen et al.
[Full text] Release note on CMS software.
Private experimental note. 22nd December.
The CMS experiment at the CERN LHC
The CMS Collaboration
[Journal] [Full text] The CMS Collaboration, "The CMS experiment at the CERN LHC", 2008 JINST 3 S08004, 361pp doi: 10.1088/1748-0221/3/08/S08004.
Refereed paper. 10th December.
Silicon Strip Tracker Detector Performance with Cosmic Ray Data at the Tracker Integration Facility
J.-L. Bonnet, G. Bruno, B. De Callatay, B. Florins, A. Giammanco, G. Gregoire, Th. Keutgen, D. Kcira, V. Lemaitre, D. Michotte, O. Militaru, K. Piotrzkowski, L. Quertermont, V. Roberfroid, X. Rouby, D. Teyssier et al. (>100 authors)
[Full text] W. Adam et al., "Silicon Strip Tracker Detector Performance with Cosmic Ray Data at the Tracker Integration Facility", CMS NOTE-2008/032.
Public experimental note. 10th December.
The CMS tracker operation and performance at the Magnet Test and Cosmic Challenge
S. Assouak, J.-L. Bonnet, G. Bruno, B. de Callatay, S. de Visscher, D. Favart, B. Florins, E. Forton5, A. Giammanco, G. Gregoire, S. Kalinin, D. Kcira, Th. Keutgen, V. Lemaitre, D. Michotte, O. Militaru, S. Ovyn, K. Piotrzkowski, X. Rouby, D. Teyssier, O. Van der Aa et al. (> 100 authors)
[Journal] [Full text] W. Adam et al., “The CMS tracker operation and performance at the Magnet Test and Cosmic Challenge”, 2008 JINST 3 P07006. doi: 10.1088/1748-0221/3/07/P07006.
G. Bruno co-editor

Refereed paper. 10th December.
Status and expectations for the first physics with the CMS detector at LHC
Andrea Giammanco
[Full text] CMS Conference Report (CMS CR-2008/104)
Contribution to proceedings. 9th December.
Particle Identification with Energy Loss in the CMS Silicon Strip Tracker
A. Giammanco
[Full text] CMS-NOTE-2008-005
Public experimental note. 18th November.
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

Tevatron-for-LHC Report: Top and Electroweak Physics
C.E.Gerber, P.Murat, T.M.P.Tait, D.Wackeroth, A.Arbuzov, D.Bardin, U.Baur, J.A.Benitez, S.Berge, S.Bondarenko, E.E.Boos, M.T.Bowen, R.Brock, V.E.Bunichev, J.Campbell, F.Canelli, Q.-H.Cao, C.M.Carloni Calame, F.Chevallier, P.Christova, C.Ciobanu, S.Dittmaier, L.V.Dudko, S.D.Ellis, A.I.Etienvre, F.Fiedler, A.Garcia-Bellido, A.Giammanco, D.Glenzinski, P.Golonka, C.Hays, S.Jadach, S.Jain, L.Kalinovskaya, M.Kramer, A.Lleres, J.Luck, A.Lucotte, A.Markina, G.Montagna, P.M.Nadolsky, O.Nicrosini, F.I.Olness, W.Placzek, R.Sadykov, V.I.Savrin, R.Schwienhorst, A.V.Sherstnev, S.Slabospitsky, B.Stelzer, M.J.Strassler, Z.Sullivan, F.Tramontano, A.Vicini, W.Wagner, Z.Was, G.Watts, M.Weber, S.Willenbrock, U.K.Yang, C-P.Yuan, J.Zhu
[Abstract] [PDF] TeV4LHC-Top and Electroweak Working Group collaboration (2007)
Contribution to proceedings. 24th May.
Fast simulations of the ATLAS and CMS experiments at LHC
A. Giammanco, A. Perrotta
[Full text] CERN CMS CR-2007/010
Contribution to proceedings. 19th March.

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.
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.


[UCLouvain] - [SST] [IRMP] - [SC]
Contact : Jérôme de Favereau
Research
Job opportunities Postdoctoral Position on advanced analysis techniques applied to the CMS di-Higgs study
Post-doctoral positions in collider phenomenology and particle astrophysics
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