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Title: Displaced lepton jet signatures from self-interacting dark matter bound states

Abstract

We study self-interacting dark matter signatures at the Large Hadron Collider. A light dark photon, mediating dark matter self-interactions, can bind dark matter particles to form a bound state when they are produced via a heavy pseduoscalar in pp collisions. The bound state can further annihilate into a pair of boosted dark photons, which subsequently decay into charged leptons through a kinetic mixing portal, resulting in striking displaced lepton jet signals. After adapting the analysis used in the ATLAS experiment, we explore the reach of the model parameters at the 13 TeV run with an integrated luminosity of 300 fb-1. For heavy dark matter, the displaced lepton jet searches can surpass traditional monojet signals in setting the lower bound on the pseduoscalar mass. If a positive signal is detected, we can probe the dark matter mass and the dark coupling constant after combining both the displaced lepton jet and monojet searches. We further show the CMS dimuon search can be sensitive to the final state radiation of the dark photon. Our results demonstrate terrestrial collider experiments complement astronomical observations of galaxies in the search of the self-interacting nature of dark matter.

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [3]
  1. Univ. of Maryland, College Park, MD (United States)
  2. Univ. of California, Riverside, CA (United States). Dept. of Physics and Astronomy; Zhejiang Univ. of Technology, Hangzhou (China). Zhejiang Inst. of Modern Physics
  3. Univ. of California, Riverside, CA (United States). Dept. of Physics and Astronomy
Publication Date:
Research Org.:
Univ. of California, Riverside, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); National Science Foundation (NSF)
OSTI Identifier:
1611068
Grant/Contract Number:  
SC0008541; PHY-1620074; PHY-1066293
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2019; Journal Issue: 8; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Physics; Beyond Standard Model; Cosmology of Theories beyond the SM

Citation Formats

Tsai, Yuhsin, Xu, Tao, and Yu, Hai-Bo. Displaced lepton jet signatures from self-interacting dark matter bound states. United States: N. p., 2019. Web. https://doi.org/10.1007/jhep08(2019)131.
Tsai, Yuhsin, Xu, Tao, & Yu, Hai-Bo. Displaced lepton jet signatures from self-interacting dark matter bound states. United States. https://doi.org/10.1007/jhep08(2019)131
Tsai, Yuhsin, Xu, Tao, and Yu, Hai-Bo. Fri . "Displaced lepton jet signatures from self-interacting dark matter bound states". United States. https://doi.org/10.1007/jhep08(2019)131. https://www.osti.gov/servlets/purl/1611068.
@article{osti_1611068,
title = {Displaced lepton jet signatures from self-interacting dark matter bound states},
author = {Tsai, Yuhsin and Xu, Tao and Yu, Hai-Bo},
abstractNote = {We study self-interacting dark matter signatures at the Large Hadron Collider. A light dark photon, mediating dark matter self-interactions, can bind dark matter particles to form a bound state when they are produced via a heavy pseduoscalar in pp collisions. The bound state can further annihilate into a pair of boosted dark photons, which subsequently decay into charged leptons through a kinetic mixing portal, resulting in striking displaced lepton jet signals. After adapting the analysis used in the ATLAS experiment, we explore the reach of the model parameters at the 13 TeV run with an integrated luminosity of 300 fb-1. For heavy dark matter, the displaced lepton jet searches can surpass traditional monojet signals in setting the lower bound on the pseduoscalar mass. If a positive signal is detected, we can probe the dark matter mass and the dark coupling constant after combining both the displaced lepton jet and monojet searches. We further show the CMS dimuon search can be sensitive to the final state radiation of the dark photon. Our results demonstrate terrestrial collider experiments complement astronomical observations of galaxies in the search of the self-interacting nature of dark matter.},
doi = {10.1007/jhep08(2019)131},
journal = {Journal of High Energy Physics (Online)},
number = 8,
volume = 2019,
place = {United States},
year = {2019},
month = {8}
}

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    Works referencing / citing this record:

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