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Title: Proton fixed-target scintillation experiment to search for millicharged dark matter

Abstract

We propose a low-cost and movable setup to probe minicharged particles (or milli-charged particles) using high-intensity proton fixed-target facilities. This proposal, FerMINI, consists of a milliQan-type detector, requiring multi-coincident (nominally, triple-coincident) scintillation signatures within a small time window, located downstream of the proton target of a neutrino experiment. During the collisions of a large number of protons on the target, intense minicharged particle beams may be produced via meson photo-decays and Drell-Yan production. We take advantage of the high statistics, shielding, and potential neutrino-detector-related background reduction to search for minicharged particles in two potential sites: the MINOS near detector hall and the proposed DUNE near detector hall, both at Fermilab. We also explore several alternative designs, including the modifications of the nominal detector to increase signal yield, and combining this detector technology with existing and planned neutrino detectors to better search for minicharged particles. The CERN SPS beam and associated experimental structure also provide a similar alternative. FerMINI can achieve unprecedented sensitivity for minicharged particles in the MeV to few GeV regime with fractional charge $$\varepsilon=Q_{\chi}/e $$ between $$10^{-4}$$ (potentially saturating the detector limitation) and $$10^{-1}$$.

Authors:
; ORCiD logo
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1545470
Alternate Identifier(s):
OSTI ID: 1489390
Report Number(s):
arXiv:1812.03998; FERMILAB-PUB-18-668-A-PPD-T
Journal ID: ISSN 2470-0010; PRVDAQ; 015043
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 100 Journal Issue: 1; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Kelly, Kevin J., and Tsai, Yu-Dai. Proton fixed-target scintillation experiment to search for millicharged dark matter. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.100.015043.
Kelly, Kevin J., & Tsai, Yu-Dai. Proton fixed-target scintillation experiment to search for millicharged dark matter. United States. https://doi.org/10.1103/PhysRevD.100.015043
Kelly, Kevin J., and Tsai, Yu-Dai. Mon . "Proton fixed-target scintillation experiment to search for millicharged dark matter". United States. https://doi.org/10.1103/PhysRevD.100.015043.
@article{osti_1545470,
title = {Proton fixed-target scintillation experiment to search for millicharged dark matter},
author = {Kelly, Kevin J. and Tsai, Yu-Dai},
abstractNote = {We propose a low-cost and movable setup to probe minicharged particles (or milli-charged particles) using high-intensity proton fixed-target facilities. This proposal, FerMINI, consists of a milliQan-type detector, requiring multi-coincident (nominally, triple-coincident) scintillation signatures within a small time window, located downstream of the proton target of a neutrino experiment. During the collisions of a large number of protons on the target, intense minicharged particle beams may be produced via meson photo-decays and Drell-Yan production. We take advantage of the high statistics, shielding, and potential neutrino-detector-related background reduction to search for minicharged particles in two potential sites: the MINOS near detector hall and the proposed DUNE near detector hall, both at Fermilab. We also explore several alternative designs, including the modifications of the nominal detector to increase signal yield, and combining this detector technology with existing and planned neutrino detectors to better search for minicharged particles. The CERN SPS beam and associated experimental structure also provide a similar alternative. FerMINI can achieve unprecedented sensitivity for minicharged particles in the MeV to few GeV regime with fractional charge $\varepsilon=Q_{\chi}/e $ between $10^{-4}$ (potentially saturating the detector limitation) and $10^{-1}$.},
doi = {10.1103/PhysRevD.100.015043},
journal = {Physical Review D},
number = 1,
volume = 100,
place = {United States},
year = {Mon Jul 29 00:00:00 EDT 2019},
month = {Mon Jul 29 00:00:00 EDT 2019}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1103/PhysRevD.100.015043

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Cited by: 20 works
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Figures / Tables:

FIG. 1 FIG. 1: Expected number of χ particles to reach a perpendicular 1 m × 1 m detection area a distance of 574 m from a 120 GeV proton beam hitting a target, in agreement with the DUNE near detector hall. We assume 1 year of live-trigger time for the accumulatedmore » events, corresponding to 1021 POT. Different colors show the production of χ via meson decays and Drell-Yan production, as described in the text.« less

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