Общелабораторный семинар

25 января 2016 г. в 11:00, в конференц-зале ЛЯП состоится семинар «The compatibility of the LHC data with a scalar with a mass around 270 GeV and its possible connection to the X(750) excess».

Докладчик: профессор Брюс Мелладо

Аннотация

The first run of the LHC saw the discovery of a Higgs boson, a particle that is consistent with the SM hypothesis. The field has been re-energized by an excess in the di-photon spectrum around 750 GeV reported by the ATLAS and CMS collaborations. In addition, there are a number of excesses in Run 1 ATLAS and CMS results, which can be interpreted as being due to the existence of heavy scalar particle. Using a minimalistic model, we can predict the kinematics of these final states and compare the prediction against data directly. A statistical combination of these results shows that a best fit point is found for a heavy scalar having a mass of 272+12-9 GeV. This result has been quantified as a three-sigma effect. The possibility of embedding these excesses, into a 2HDM, with H(270) and A(750), and the phenomenologicalimplications are discussed.