Dark matter search in a Beam-Dump eXperiment (BDX) at Jefferson Lab--2018 update to PR12-16-001
M Battaglieri, A Bersani, G Bracco, B Caiffi… - arXiv preprint arXiv …, 2019 - arxiv.org
arXiv preprint arXiv:1910.03532, 2019•arxiv.org
This document complements and completes what was submitted last year to PAC45 as an
update to the proposal PR12-16-001" Dark matter search in a Beam-Dump eXperiment
(BDX)" at Jefferson Lab submitted to JLab-PAC44 in 2016. Following the suggestions
contained in the PAC45 report, in coordination with the lab, we ran a test to assess the beam-
related backgrounds and validate the simulation framework used to design the BDX
experiment. Using a common Monte Carlo framework for the test and the proposed …
update to the proposal PR12-16-001" Dark matter search in a Beam-Dump eXperiment
(BDX)" at Jefferson Lab submitted to JLab-PAC44 in 2016. Following the suggestions
contained in the PAC45 report, in coordination with the lab, we ran a test to assess the beam-
related backgrounds and validate the simulation framework used to design the BDX
experiment. Using a common Monte Carlo framework for the test and the proposed …
This document complements and completes what was submitted last year to PAC45 as an update to the proposal PR12-16-001 "Dark matter search in a Beam-Dump eXperiment (BDX)" at Jefferson Lab submitted to JLab-PAC44 in 2016. Following the suggestions contained in the PAC45 report, in coordination with the lab, we ran a test to assess the beam-related backgrounds and validate the simulation framework used to design the BDX experiment. Using a common Monte Carlo framework for the test and the proposed experiment, we optimized the selection cuts to maximize the reach considering simultaneously the signal, cosmic-ray background (assessed in Catania test with BDX-Proto) and beam-related backgrounds (irreducible NC and CC neutrino interactions as determined by simulation). Our results confirmed what was presented in the original proposal: with 285 days of a parasitic run at 65 A (corresponding to EOT) the BDX experiment will lower the exclusion limits in the case of no signal by one to two orders of magnitude in the parameter space of dark-matter coupling versus mass.
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