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- Phenomenology of elementary particles
Phenomenology of elementary particles
The phenomenology of the fundamental interactions encopasses a wide range of research activities, whose main characteristic is to sit at the boundary between theory and experiment. Day-to-day interactions and collaborations between theorists and the experimentalists at the Centre foster new ideas in different ways.
Sometimes a top-down approach is followed : New theoretical models and mechanisms are proposed and possible measurements at colliders or in other experiments are suggested. Search for Higgs scalars, supersymmetry or gravitational effects at the TeV scale are examples of such activities.
Alternatively, a bottom-up approach can be employed where new experimental possibilities are suggested or experimental data are scrutinized that call for a deeper understanding of standard model physics and/or (hopefully!) for new physics effects.
The research activities in this area cover several fields of investigation that can broadly associated to following categories:
- Collider phenomenology
- Flavour physics
- Precision EW and QCD calculations
- BSM : model building and alternative EWSB mechanims
- Computational tools for HEP
Members
Academic staff
Research scientists
Research project coordinators
Physicists, engineers and computer scientists
Professors emeriti
Postdocs
PhD students
Visitors
Interns
Projects
Click the title to show project description.-
MoMEMta is a C++ software package to compute Matrix Element weights. Designed in a modular way, it covers the needs of experimental analysis workflows at the LHC. MoMEMta provides working examples for the most common final states (<latex>$tt\bar$</latex>, WW, ...). If you are an expert user, be prepared to feel the freedom of configuring your MEM computation at all levels.
MoMEMta is based on:
- C++, ROOT, Lua scripting language
- Cuba (Monte-Carlo integration library)
- External PDFs (LHAPDF by default)
- External Matrix Elements (currently provided by our MadGraph C++ exporter plugin) -
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.
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We study supersymmetric models in which modifications of the neutrino sector, to include a mass term, are connected to the dark matter sector. We analyse if the dark matter particles can be good dark matter candidates by considering cosmological and astrophysical constraints, as well as if the new neutrino sector can accommodate neutrino data.
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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.
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High-energy photon-photon and photon-proton interactions at the LHC offer interesting possibilities for the study of the electroweak sector up to TeV scale and the search for processes beyond the Standard Model. After in-depth exploratory studies, first measurements of two-photon muon pair production were performed as well as first ever observation of W boson pairs produced by photon fusion. Now unique investigations of quartic couplings between photons and W and Z bosons are being pursued.
Surveying the scientific potential of the new e-ion collider at Brookhaven (EIC) and the future LHeC at CERN. -
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. -
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.
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We study the perspectives to probe the origin of baryonic matter in the observable universe with laboratory experiments. Currently the focus lies on low scale leptogenesis scenarios. A key element of our approach lies in the description of CP violating nonequilibrium processes in the early universe from first principles of nonequilibrium quantum field theory.
Recent Publications
Click the title to show details.-
Drewes, Marco and Georis, Yannis and Klaric, Juraj and Wendels, Antony, July 19, 2024
Refereed paper. [Abstract] [PDF] [Local file] -
de Vries, Jordy and Drewes, Marco and Georis, Yannis and Klaric, Juraj and Plakkot, Vaisakh, July 16, 2024
Refereed paper. [Abstract] [PDF] [Local file] -
Maltoni, Fabio and Pagani, Davide and Tentori, Simone, June 10, 2024
Refereed paper. [Abstract] [PDF] [Local file] [Journal] [Dial] -
Tommaso Armadillo, Roberto Bonciani, Simone Devoto, Narayan Rana, Alessandro Vicini, May 2, 2024
Refereed paper. [Abstract] [PDF] [Local file] [Journal] [Dial] -
Luc Darmé, Benjamin Fuks, Hao-Lin Li, Matteo Maltoni, Olivier Mattelaer, and Julien Touchèque, April 22, 2024
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Céline Degrande, Matteo Maltoni, March 25, 2024
Refereed paper. [Abstract] [PDF] [Local file] [Journal] [Dial] -
Georis, Yannis, January 11, 2024
Contribution to proceedings. [Abstract] [PDF] [Local file]
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Simone Tentori, January 9, 2024
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Eugenia Celada,Tao Han, Wolfgang Kilian,Nils Kreher, Yang Ma, Fabio Maltoni, Davide Pagani, Jurgen Reuter, Tobias Striegl, and Keping Xie., December 17, 2023
Refereed paper. [Abstract] [PDF] [Local file] [Journal] [Dial] -
Arina, Chiara and Di Mauro, Mattia and Fornengo, Nicolao and Heisig, Jan and Jueid, Adil and de Austri, Roberto Ruiz, December 6, 2023
Refereed paper. [Abstract] [PDF] [Local file] [Journal] [Dial] -
Rouzbeh Allahverdi, Chiara Arina, Marco Chianese, Michele Cicoli, Fabio Maltoni, Daniele Massaro and Jacek K. Osinski, November 30, 2023
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Blasi, Simone and Maltoni, Fabio and Mariotti, Alberto and Mimasu, Ken and Pagani, Davide and Tentori, Simone, November 27, 2023
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Arina, Chiara and Fuks, Benjamin and Heisig, Jan and Kr\"amer, Michael and Mantani, Luca and Panizzi, Luca, July 30, 2023
Refereed paper. [Abstract] [PDF] [Local file] [Journal] [Dial] -
Georis, Yannis, July 13, 2023
Contribution to proceedings. [Abstract] [PDF] [Local file] -
Aoude, Rafael and Madge, Eric and Maltoni, Fabio and Mantani, Luca, July 2, 2023
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Maltoni, Fabio and Ridolfi, Giovanni and Ubiali, Maria and Zaro, Marco, July 2, 2023
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Altakach, Mohammad Mahdi and Lamba, Priyanka and Maltoni, Fabio and Mawatari, Kentarou and Sakurai, Kazuki, July 2, 2023
Refereed paper. [Abstract] [PDF] [Local file] [Journal] [Dial] -
Mattia di Mauro, Chiara Arina, Nicolao Fornengo, Jan Heisig and Daniele Massaro, May 19, 2023
Refereed paper. [Abstract] [PDF] [Local file] [Journal] [Dial] -
Martina Mongillo, Asli M. Abdullahi, Benjamin Banto Oberhauser, Paolo Crivelli, Matheus Hostert, Daniele Massaro, Laura Molina Bueno and Silvia Pascoli, February 9, 2023
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Asli M. Abdullahi, Matheus Hostert, Daniele Massaro and Silvia Pascoli, February 9, 2023
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Chauhan, Garv and Dev, P. S. Bhupal and Xu, Xun-Jie, October 28, 2022
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Chauhan, Garv and Dev, P. S. Bhupal, October 28, 2022
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Asli M. Abdullahi, Jaime Hoefken Zink, Matheus Hostert, Daniele Massaro and Silvia Pascoli, July 9, 2022
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Armadillo, Tommaso and Bonciani, Roberto and Devoto, Simone and Rana, Narayan and Vicini, Alessandro, May 9, 2022
Refereed paper. [Abstract] [PDF] [Local file] [Journal] [Dial] -
Khawla Jaffel for the CMS Collaboration, April 20, 2022
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Jerhot, Jan and D\"obrich, Babette and Ertas, Fatih and Kahlhoefer, Felix and Spadaro, Tommaso, January 17, 2022
Refereed paper. [Abstract] [PDF] [Local file] [Journal] [Dial] -
Hesham El Faham, December 25, 2021
Contribution to proceedings. [Abstract] [PDF] [Local file] -
Daniele Massaro, Chiara Arina, Jan Heisig, Fabio Maltoni and Olivier Mattelaer, November 12, 2021
Contribution to proceedings. [Abstract] [PDF] [Local file] -
Hesham El Faham, Fabio Maltoni, Ken Mimasu, Marco Zaro, November 4, 2021
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P. Athron, N. Avis Kozar, C. Balázs, A. Beniwal, S. Bloor, T. Bringmann, J. Brod, C. Chang, J. M. Cornell, B. Farmer, A. Fowlie, T. E. Gonzalo, W. Handley, F. Kahlhoefer, A. Kvellestad, F. Mahmoudi, M. T. Prim, A. Raklev, J. J. Renk, A. Scaffidi, P. Scott, P. Stöcker, A. C. Vincent, M. White, S. Wild, J. Zupan, June 2, 2021
Refereed paper. [Abstract] [PDF] [Journal] [Dial] -
D.W.P. Amaral, D.G. Cerdeño, A. Cheek, P. Foldenauer, April 7, 2021
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Fuks, Benjamin and Neundorf, Jonas and Peters, Krisztian and Ruiz, Richard and Saimpert, Matthias, December 16, 2020
Refereed paper. [Full text] -
Chiara Arina, December 15, 2020
Refereed paper. Contribution to proceedings. [Abstract] [PDF] [Local file] [Journal] [Dial] -
Jan Hajer, August 23, 2019
Contribution to proceedings. [Full text] -
Jan Hajer, August 23, 2019
Contribution to proceedings. [Full text] -
Marco Drewes, July 31, 2019
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Marco Drewes, January 23, 2019
Refereed paper. [Full text] -
Marco Drewes, June 11, 2018
Contribution to proceedings. [Full text] -
C. Degrande, V. Hirschi, O. Mattelaer, May 9, 2018
[Full text] -
CMS collaboration, October 3, 2015
Public experimental note. [Full text] -
Claude Duhr, November 13, 2014
Contribution to proceedings. [Full text] -
Liss, T. , Maltoni, F., and Quadt, A. , February 6, 2014
Refereed paper. [Full text] -
Andrea Giammanco, February 14, 2013
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Jean-Marc Gérard and Paolo Valente, January 5, 2012
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Nicolas Schul, August 6, 2009
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Michel Herquet, Fabio Maltoni , December 31, 2008
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P. Artoisenet, December 14, 2008
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Pierre Artoisenet, Olivier Mattelaer, November 28, 2008
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N.D. Christensen, C. Duhr, September 17, 2008
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Simon de Visscher, Johan Alwall, Fabio Maltoni, September 15, 2008
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Rikkert Frederix, July 1, 2008
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P. Artoisenet, June 28, 2008
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C. Duhr, June 23, 2008
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S. Ovyn on behalf of the CMS Collaboration, June 6, 2008
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Pierzchala Tomasz, December 6, 2007
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Séverine Ovyn, October 15, 2007
Contribution to proceedings. [Full text] -
Rikkert Frederix, July 26, 2007
Contribution to proceedings. [Full text] -
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, May 24, 2007
Contribution to proceedings. [Abstract] [PDF] -
Johan Alwall, June 29, 2006
Contribution to proceedings. [Full text]