High Energy Physics / Université catholique de Louvain / Louvain-la-Neuve


When it comes to top, no pairing is beyond belief !

On Thursday, 16th of June, at the LHCP international conference in Lund, Sweden, the CMS experiment presented the very first cross section measurement of the top pair (tt) production at 5.02 TeV center-of-mass (c.o.m) energy. The measurement tracks the evolution of the tt cross section as a function of c.o.m energy, crucial for the extraction of the top-quark pole mass, while it can be used to constrain the gluon distribution function at the un-explored large longitudinal parton momentum fraction regime. Future measurements of the tt cross section in nuclear collisions at the same nucleon-nucleon c.o.m energy would profit from the availability of such a reference measurement in pp collisions, without the need to extrapolate from measurements at different c.o.m energies. Read more...

MoMEMta public release

Dear Matrix Element Method enthusiasts, we are happy to announce the release of MoMEMta. In our web page you will find direct links to the GitHub repository, instructions on how to install and run MoMEMta, technical documentation, and many other things. If you are interested, please try it!! We are waiting for your feedback

MoMEMta is a CP3 product, adapting the MadWeight philosophy to the experimental needs.

The MoMEMta team
When it comes to ... | MoMEMta public release
CP3 News Blog

Latest preprints

The Higgs singlet extension at LHC Run 2
G. Chalons, D. Lopez-Val, T. Robens, and T. Stefaniak
Conference proceedings for the XXIV DIS Workshop, 11-15 April, DESY Hamburg, Germany
Contribution to proceedings. 17th June.

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.

Multi-Regge kinematics and the moduli space of Riemann spheres with marked points
Vittorio Del Duca, Stefan Druc, James Drummond, Claude Duhr, Falko Dulat, Robin Marzucca, Georgios Papathanasiou, Bram Verbeek
Submitted to JHEP.
Refereed paper. 16th June.

The Physics Department at UCLouvain has been involved for a number of decades in high energy particle physics research, equally strongly on the experimental and instrumental fronts as on the theoretical one. In spite of being located in physically distinct places, all these activities are now brought together within a common organisational structure, the Centre for Cosmology, Particle Physics and Phenomenology (CP3). This structure reinforces the collaboration of these varied components and competences in the physics of the fundamental interactions and the elementary particles.

[UCLouvain] - [SST] [IRMP] - [SC] [PHYS]
Contact : Vincent Boucher & Jérôme de Favereau
Job opportunities Summer Student program in CP3 for BAC 3 (2016)
Post-doctoral Research Positions at UCL – CMS or NA62 experiments
Summer Students program (Masters) 2016
LHC status