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Title: Signatures of pseudo-Dirac dark matter at high-intensity neutrino experiments

Abstract

Here, we (re)consider the sensitivity of past (LSND) and future (JSNS 2) beam dump neutrino experiments to two models of MeV-scale pseudo-Dirac dark matter. Both LSND and JSNS 2 are close (24–30 m) to intense sources of light neutral mesons which may decay to dark matter via interactions involving a light mediator or dipole operators. The dark matter can then scatter or decay inside of the nearby detector. We show that the higher beam energy of JSNS 2 and resulting η production can improve on the reach of LSND for light-mediator models with dark matter masses greater than m π/2. Further, we find that both existing LSND and future JSNS 2 measurements can severely constrain the viable parameter space for a recently proposed model of dipole dark matter which could explain the 3.5 keV excess reported in observations of stacked galaxy clusters and the Galactic center.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [2];  [1]
  1. Univ. of Michigan, Ann Arbor, MI (United States)
  2. Princeton Univ., Princeton, NJ (United States)
  3. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1478581
Alternate Identifier(s):
OSTI ID: 1480112
Report Number(s):
arXiv:1806.05185; FERMILAB-PUB-18-148-A; PUPT 2563; PUPT-2563
Journal ID: ISSN 2470-0010; PRVDAQ; 1677890
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article: Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 98; Journal Issue: 7; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Jordan, Johnathon R., Kahn, Yonatan, Krnjaic, Gordan, Moschella, Matthew, and Spitz, Joshua. Signatures of pseudo-Dirac dark matter at high-intensity neutrino experiments. United States: N. p., 2018. Web. doi:10.1103/PhysRevD.98.075020.
Jordan, Johnathon R., Kahn, Yonatan, Krnjaic, Gordan, Moschella, Matthew, & Spitz, Joshua. Signatures of pseudo-Dirac dark matter at high-intensity neutrino experiments. United States. doi:10.1103/PhysRevD.98.075020.
Jordan, Johnathon R., Kahn, Yonatan, Krnjaic, Gordan, Moschella, Matthew, and Spitz, Joshua. Tue . "Signatures of pseudo-Dirac dark matter at high-intensity neutrino experiments". United States. doi:10.1103/PhysRevD.98.075020.
@article{osti_1478581,
title = {Signatures of pseudo-Dirac dark matter at high-intensity neutrino experiments},
author = {Jordan, Johnathon R. and Kahn, Yonatan and Krnjaic, Gordan and Moschella, Matthew and Spitz, Joshua},
abstractNote = {Here, we (re)consider the sensitivity of past (LSND) and future (JSNS2) beam dump neutrino experiments to two models of MeV-scale pseudo-Dirac dark matter. Both LSND and JSNS2 are close (24–30 m) to intense sources of light neutral mesons which may decay to dark matter via interactions involving a light mediator or dipole operators. The dark matter can then scatter or decay inside of the nearby detector. We show that the higher beam energy of JSNS2 and resulting η production can improve on the reach of LSND for light-mediator models with dark matter masses greater than mπ/2. Further, we find that both existing LSND and future JSNS2 measurements can severely constrain the viable parameter space for a recently proposed model of dipole dark matter which could explain the 3.5 keV excess reported in observations of stacked galaxy clusters and the Galactic center.},
doi = {10.1103/PhysRevD.98.075020},
journal = {Physical Review D},
issn = {2470-0010},
number = 7,
volume = 98,
place = {United States},
year = {2018},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevD.98.075020

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