HEP Seminar

Date
Wed, Apr 25, 2018 4:00 pm - 5:30 pm
Location
PSC room 3150

Description

Speaker Name: Yangyang Cheng

Speaker Institution : Cornell University
Title : "Long Live the Dark Side - and New Ways to Get There"

Abstract : The existence of dark matter (DM) is one of the most striking evidence of physics beyond the Standard Model. Despite a plethora of astrophysical and cosmological observations, the nature of DM remains unknown, and stringent constraints have been placed on DM as Weakly Interacting Massive Particles (WIMPs) through (in)direct detection and collider experiments. If nature contains more than just one type of DM particle, but a more complex dark sector, some of the dark sector particles may have a longer lifetime before decaying to visible particles and DM candidates, creating striking signatures at collider experiments and opening up a new paradigm for DM searches. This talk presents the physics motivations for a few of the dark sector models, their searches at the CMS experiment, and existing challenges. The talk then describes the upgrade scope for the CMS experiment at the High-Luminosity LHC, and the ensuing tantalizing prospects for dark sector searches with the upgrade detector