Bonn 2020 – scientific programme

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T: Fachverband Teilchenphysik

T 93: Search for new particles V

T 93.8: Talk

Friday, April 3, 2020, 12:45–13:00, H-HS IV

Search for low mass dark photon in dimuon channel using scouting trigger in CMS — •Swagata Mukherjee and Thomas Hebbeker — III. Physikalisches Institut A, RWTH Aachen University

After several years of running of the LHC, new physics has not been found yet. Data scouting is an attempt to search in a rather difficult corner of phase space, which is the low mass region. This special data flow, based on event-size reduction rather than event filtering, will be discussed in this talk. Scouting data is useful to perform searches in regions where nominal triggers have reduced or zero sensitivity. A new search for dark-photons in the dimuon channel has been performed in CMS, which utilises dimuon scouting data for low mass. An intriguing possibility that the dark matter might interact via a new dark force, felt only feebly by standard model particles, has recently motivated a worldwide effort to search for dark forces. A particularly compelling dark-force scenario is that of a dark photon, which has very small couplings to standard model particles via kinetic mixing with the ordinary photon. This new search will be presented in this talk.