Speakers
Description
In this presentation we give an update of the multi-lepton (electrons and muons) anomalies at the LHC is given. These include the excess production of opposite sign leptons with and without b- quarks, including a corner of the phase-space with a full hadronic jet veto; same sign leptons with and without b-quarks; three leptons with and without b-quarks, including also the presence of a Z. The internal consistency of these anomalies and their interpretation in the framework of a simplified model are presented, where the inconsistency of the data with the SM is more than 8σ. The simplified model includes a singlet scalar S with a mass in the range 130-170 GeV produced from the decay of a heavier new scalar H, leading to di-boson signatures. Motivated by this, a search for narrow resonances with S→γγ, Zγ in association with light jets, b-jets or missing transverse energy is performed. A narrow excess is found at 151.5 GeV with a global significance exceeding 5 sigma, including recent results from the LHC experiments. The connection with the 96 GeV candidate is also discussed.
Level for award;(Hons, MSc, PhD, N/A)?
N/A
| Apply to be considered for a student ; award (Yes / No)? | No |
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