Probing Dark Showers at the LHCb

Speaker: Yuhsin Tsai

Dark shower is a generic feature of the Hidden Valley (HV)
model, which produces bound states with a high multiplicity, low
masses, and long lifetimes. The showering process can arise, for
example, in Neutral Naturalness models, or in dark matter scenarios
that explain the possible signal of galactic center gamma-ray. A
collider search of such signals requires good invariant-mass and
vertex resolution, as well as a good particle id to veto the
background. I will explain why the LHCb experiment has a great
potential in seeing these dark shower events and compare the estimated
sensitivity to that of the future ATLAS/CMS searches.