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Title: Scattering of dark particles with light mediators

Abstract

We present a treatment of the high energy scattering of dark Dirac fermions from nuclei, mediated by the exchange of a light vector boson. The dark fermions are produced by proton-nucleus interactions in a fixed target and, after traversing shielding that screens out strongly interacting products, appear similarly to neutrino neutral current scattering in a detector. Using the Fermilab experiment E613 as an example, we place limits on a secluded dark matter scenario. Visible scattering in the detector includes both the familiar regime of large momentum transfer to the nucleus (Q2) described by deeply inelastic scattering, as well as small Q2 kinematics described by the exchanged vector mediator fluctuating into a quark-antiquark pair whose interaction with the nucleus is described by a saturation model. Here, we find that the improved description of the low Q2 scattering leads to important corrections, resulting in more robust constraints in a regime where a description entirely in terms of deeply inelastic scattering cannot be trusted.

Authors:
 [1];  [2];  [2];  [3]
  1. Univ. of Oregon, Eugene, OR (United States). Inst. of Theoretical Science
  2. Durham Univ. (United Kingdom). Inst. for Particle Physics Phenomenology
  3. Univ. of California, Irvine, CA (United States)
Publication Date:
Research Org.:
Univ. of Oregon, Eugene, OR (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1601467
Alternate Identifier(s):
OSTI ID: 1180872
Grant/Contract Number:  
SC0011640
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 90; Journal Issue: 11; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Soper, Davison E., Spannowsky, Michael, Wallace, Chris J., and Tait, Tim M. P. Scattering of dark particles with light mediators. United States: N. p., 2014. Web. doi:10.1103/PhysRevD.90.115005.
Soper, Davison E., Spannowsky, Michael, Wallace, Chris J., & Tait, Tim M. P. Scattering of dark particles with light mediators. United States. https://doi.org/10.1103/PhysRevD.90.115005
Soper, Davison E., Spannowsky, Michael, Wallace, Chris J., and Tait, Tim M. P. 2014. "Scattering of dark particles with light mediators". United States. https://doi.org/10.1103/PhysRevD.90.115005. https://www.osti.gov/servlets/purl/1601467.
@article{osti_1601467,
title = {Scattering of dark particles with light mediators},
author = {Soper, Davison E. and Spannowsky, Michael and Wallace, Chris J. and Tait, Tim M. P.},
abstractNote = {We present a treatment of the high energy scattering of dark Dirac fermions from nuclei, mediated by the exchange of a light vector boson. The dark fermions are produced by proton-nucleus interactions in a fixed target and, after traversing shielding that screens out strongly interacting products, appear similarly to neutrino neutral current scattering in a detector. Using the Fermilab experiment E613 as an example, we place limits on a secluded dark matter scenario. Visible scattering in the detector includes both the familiar regime of large momentum transfer to the nucleus (Q2) described by deeply inelastic scattering, as well as small Q2 kinematics described by the exchanged vector mediator fluctuating into a quark-antiquark pair whose interaction with the nucleus is described by a saturation model. Here, we find that the improved description of the low Q2 scattering leads to important corrections, resulting in more robust constraints in a regime where a description entirely in terms of deeply inelastic scattering cannot be trusted.},
doi = {10.1103/PhysRevD.90.115005},
url = {https://www.osti.gov/biblio/1601467}, journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
issn = {1550-7998},
number = 11,
volume = 90,
place = {United States},
year = {Wed Dec 03 00:00:00 EST 2014},
month = {Wed Dec 03 00:00:00 EST 2014}
}

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Cited by: 44 works
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Works referencing / citing this record:

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