Sensitivity of an Early Dark Matter Search using the Electromagnetic Calorimeter as a Target for the Light Dark Matter eXperiment

Kavli Affiliate: Gordan Krnjaic

| First 5 Authors: LDMX Collaboration, LDMX Collaboration, , ,

| Summary:

The Light Dark Matter eXperiment (LDMX) is proposed to employ a thin tungsten
target and a multi-GeV electron beam to carry out a missing momentum search for
the production of dark matter candidate particles. We study the sensitivity for
a complementary missing-energy-based search using the LDMX Electromagnetic
Calorimeter as an active target with a focus on early running. In this context,
we construct an event selection from a limited set of variables that projects
sensitivity into previously-unexplored regions of light dark matter phase space
— down to an effective dark photon interaction strength $y$ of approximately
$2times10^-13$ ($5times10^-12$) for a 1MeV (10MeV) dark matter candidate
mass.

| Search Query: ArXiv Query: search_query=au:”Gordan Krnjaic”&id_list=&start=0&max_results=3

Read More