IPM Calendar 
Sunday 5 May 2024   Today  
Events for day: Monday 21 February 2022    
           09:00 - 17:00     School
3rd Advanced School on Holography and Quantum Information Topics

School
PARTICLES AND ACCELERATORS

The aim of this advanced school is to review and discuss the recent developments in connections between quantum information theory and holography. ...

           11:00 - 12:00     Journal Club: Experiment & Phenomenology - google meet
Search for production of four top quarks in final states with same-sign or multiple leptons in proton-proton collisions at $sqrt{s}=13$TeV

School
PARTICLES AND ACCELERATORS

The standard model (SM) production of four top quarks () in proton-proton collision is studied by the CMS Collaboration. The data sample, collected during the 2016-2018 data taking of the LHC, corresponds to an integrated luminosity of 137 at a center-of-mass energy of 13 TeV. The events are required to contain two same-sign charged leptons (electrons or muons) or at least three leptons, and jets. The observed and expected significances for the signal are respectively 2.6 and 2.7 standard deviations, and the cross section is measured to be fb. The results are used to constrain the Yukawa coupling of the top quark to the Higgs boson, yieldin ...