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Title: Probing the Dark Sector with Dark Matter Bound States

Abstract

A model of the dark sector where O ( few GeV ) mass dark matter particles χ couple to a lighter dark force mediator V , m V m χ , is motivated by the recently discovered mismatch between simulated and observed shapes of galactic halos. Such models, in general, provide a challenge for direct detection efforts and collider searches. We demonstrate that for a large range of coupling constants and masses, the production and decay of the bound states of χ , such as 0 - + and 1 - - states, η D and Υ D , is an important search channel. We show that e+e- η D +V or Υ D +γ production at B factories for α D >0.1 is sufficiently strong to result in multiple pairs of charged leptons and pions via η D 2V2(l+l-) and Υ D 3V3(l+l-) (l=e,μ,π) . The absence of such final states in the existing searches performed at BABAR and Belle sets new constraints on the parameter space of the model. We also show that a search for multiple bremsstrahlung of dark force mediators, e+e-χ χ ¯ +nV , ending in missing energy and multiple leptons, will further improve the sensitivity to self-interacting dark matter.

Authors:
 [1];  [1];  [2];  [1]
  1. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  2. Univ. of Victoria, BC (Canada); Perimeter Inst. for Theoretical Physics, Waterloo, ON (Canada)
Publication Date:
Research Org.:
California Institute of Technology (CalTech), Pasadena, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF); Gordon and Betty Moore Foundation
OSTI Identifier:
1598357
Alternate Identifier(s):
OSTI ID: 1246753
Grant/Contract Number:  
SC0011632; FG02-92ER40701; SC0010255; PHY-1066293
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 116; Journal Issue: 15; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

An, Haipeng, Echenard, Bertrand, Pospelov, Maxim, and Zhang, Yue. Probing the Dark Sector with Dark Matter Bound States. United States: N. p., 2016. Web. doi:10.1103/PhysRevLett.116.151801.
An, Haipeng, Echenard, Bertrand, Pospelov, Maxim, & Zhang, Yue. Probing the Dark Sector with Dark Matter Bound States. United States. https://doi.org/10.1103/PhysRevLett.116.151801
An, Haipeng, Echenard, Bertrand, Pospelov, Maxim, and Zhang, Yue. Mon . "Probing the Dark Sector with Dark Matter Bound States". United States. https://doi.org/10.1103/PhysRevLett.116.151801. https://www.osti.gov/servlets/purl/1598357.
@article{osti_1598357,
title = {Probing the Dark Sector with Dark Matter Bound States},
author = {An, Haipeng and Echenard, Bertrand and Pospelov, Maxim and Zhang, Yue},
abstractNote = {A model of the dark sector where O(fewGeV) mass dark matter particles χ couple to a lighter dark force mediator V, mV≪mχ, is motivated by the recently discovered mismatch between simulated and observed shapes of galactic halos. Such models, in general, provide a challenge for direct detection efforts and collider searches. We demonstrate that for a large range of coupling constants and masses, the production and decay of the bound states of χ, such as 0-+ and 1-- states, ηD and ΥD, is an important search channel. We show that e+e-→ηD+V or ΥD+γ production at B factories for αD>0.1 is sufficiently strong to result in multiple pairs of charged leptons and pions via ηD→2V→2(l+l-) and ΥD→3V→3(l+l-) (l=e,μ,π). The absence of such final states in the existing searches performed at BABAR and Belle sets new constraints on the parameter space of the model. We also show that a search for multiple bremsstrahlung of dark force mediators, e+e-→χχ¯+nV, ending in missing energy and multiple leptons, will further improve the sensitivity to self-interacting dark matter.},
doi = {10.1103/PhysRevLett.116.151801},
journal = {Physical Review Letters},
number = 15,
volume = 116,
place = {United States},
year = {Mon Apr 11 00:00:00 EDT 2016},
month = {Mon Apr 11 00:00:00 EDT 2016}
}

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Cited by: 26 works
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