LTP: Laboratory for Particle Physics
Scientific Highlights and News
Lea Caminada, a researcher in the High-Energy Particle Physics group of the Laboratory for Particle Physics (LTP) in NUM, has received the annual CMS Young Researcher Prize. This Prize is given once a year to outstanding young physicists who made very significant and sustained contributions to the CMS experiment at the LHC facility at CERN. Dr. Caminada has been recognized for her contribution to the construction, installation and commissioning of the two pixel detectors which were build at PSI for the CMS experiment. Her work also included the measurement of the B-meson production cross section and the observation of the Higgs boson in association with top quarks.
The observation of Higgs boson production in association with a top quark-antiquark pair is reported, based on a combined analysis of proton-proton collision data at center-of-mass energies of √s = 7,8, and 13 TeV, corresponding to integrated luminosities of up to 5.1, 19.7, and 35.9 fb-1, respectively. The data were collected with the CMS detector at the CERN LHC.
In recent years, intriguing hints for the violation of lepton flavor universality (LFU) have been accumulated in semileptonic B decays, both in the charged-current transitions b → cl-ν-l (i.e., RD, RD∗, and RJ/Ψ and the neutral-current transitions b → sl+l- (i.e., RK and RK∗.
The Swiss National Science Foundation (SNSF) awarded this year an SNSF professorship to Andreas Crivellin (NUM, Laboratory of Particle Physics (LTP), Theory Group) for his research plan on the study of Lepton Flavour Universality Violation (LFUV) in B meson decays. These processes received a lot of attention in the last years due to the intriguing hints for LFUV which, if confirmed, would prove the existence of physics beyond the Standard Model (SM) of particle physics.
The Charpak-Ritz Prize 2018, jointly awarded by the French Physical Society and the Swiss Physical Society, has been bestowed to Roland Paul Horisberger for his numerous contributions to the development of precision silicon vertex detectors for particle physics experiments as well as for the application of these technologies in X-ray photon sciences.