Las mañanas IFCA con Sandeep Bhowmik: "Search for Higgs boson pair production and development of tau trigger algorithms in CMS"
Start date: 22/03/2023 12:00
End date: 22/03/2023 13:00
Search for Higgs boson pair production and development of tau trigger algorithms in CMS:
The search for Higgs boson pair (HH) production in the 4W, 2W2tau, and 4tau decay modes is performed. The search uses 138 /fb of proton-proton collision data recorded by the CMS experiment at the LHC at a center-of-mass energy of 13 TeV from 2016 to 2018. Analyzed events contain two, three, or four reconstructed leptons, including electrons, muons, and hadronically decaying tau leptons. No evidence for a signal is found in the data. Upper limits are set on the cross section for nonresonant HH production, as well as resonant production in which a new heavy particle decays to a pair of Higgs bosons.
The CMS experiment will replace entirely its trigger system for the High Luminosity LHC to collect datasets efficiently in the harsh environment of 200 proto-proton interactions per LHC bunch crossing. New algorithms have been developed to select events containing hadronic tau decays on L1 and HLT during LHC Phase II. The performances of the algorithms are studied in terms of efficiency and rate expected for a single hadronic tau and for a tau pair (di-tau) trigger, using simulated events.
Sandeep Bhowmik obtained his Master of Science in Physics at the Indian Institute of Technology Guwahati in 2009. He completed his PhD in 2016 with the CMS experiment at tge Visvabharati University and Tata Institute of Fundamental Research (TIFR) Mumbai, India. Then he joined the National Institute of Science, Education and Research (NISER) Bhubaneswar in India as a postdoctoral Research Fellow. After that Sandeep has worked as a researcher at the National Institute of Chemical Physics and Biophysics (NICPB) Tallinn, Estonia, from 2017 to 2022.
La charla tendrá lugar en la Sala Luis Pesquera del IFCA a las 12:00 y en streaming a través del canal de YouTube del IFCA. Café previo a las 11:45.