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Title: LHC searches for dark sector showers

Abstract

This paper proposes a new search program for dark sector parton showers at the Large Hadron Collider (LHC). These signatures arise in theories characterized by strong dynamics in a hidden sector, such as Hidden Valley models. A dark parton shower can be composed of both invisible dark matter particles as well as dark sector states that decay to Standard Model particles via a portal. The focus here is on the specific case of ‘semi-visible jets,’ jet-like collider objects where the visible states in the shower are Standard Model hadrons. We present a Simplified Model-like parametrization for the LHC observables and propose targeted search strategies for regions of parameter space that are not covered by existing analyses. Following the ‘mono-X’ literature, the portal is modeled using either an effective field theoretic contact operator approach or with one of two ultraviolet completions; sensitivity projections are provided for all three cases. We additionally highlight that the LHC has a unique advantage over direct detection experiments in the search for this class of dark matter theories.

Authors:
 [1];  [2];  [3]; ORCiD logo [2]
  1. Univ. of Oregon, Eugene, OR (United States). Inst. of Theoretical Science
  2. Princeton Univ., NJ (United States). Dept. of Physics
  3. Univ. of California, Berkeley, CA (United States). Dept. of Physics
Publication Date:
Research Org.:
Pinceton Univ., NJ (United States); Univ. of California, Berkeley (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1505199
Grant/Contract Number:  
SC0007968; AC02-05CH11231
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: 2017; Journal Issue: 11; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Phenomenological Models; Jets

Citation Formats

Cohen, Timothy, Lisanti, Mariangela, Lou, Hou Keong, and Mishra-Sharma, Siddharth. LHC searches for dark sector showers. United States: N. p., 2017. Web. doi:10.1007/jhep11(2017)196.
Cohen, Timothy, Lisanti, Mariangela, Lou, Hou Keong, & Mishra-Sharma, Siddharth. LHC searches for dark sector showers. United States. doi:10.1007/jhep11(2017)196.
Cohen, Timothy, Lisanti, Mariangela, Lou, Hou Keong, and Mishra-Sharma, Siddharth. Wed . "LHC searches for dark sector showers". United States. doi:10.1007/jhep11(2017)196. https://www.osti.gov/servlets/purl/1505199.
@article{osti_1505199,
title = {LHC searches for dark sector showers},
author = {Cohen, Timothy and Lisanti, Mariangela and Lou, Hou Keong and Mishra-Sharma, Siddharth},
abstractNote = {This paper proposes a new search program for dark sector parton showers at the Large Hadron Collider (LHC). These signatures arise in theories characterized by strong dynamics in a hidden sector, such as Hidden Valley models. A dark parton shower can be composed of both invisible dark matter particles as well as dark sector states that decay to Standard Model particles via a portal. The focus here is on the specific case of ‘semi-visible jets,’ jet-like collider objects where the visible states in the shower are Standard Model hadrons. We present a Simplified Model-like parametrization for the LHC observables and propose targeted search strategies for regions of parameter space that are not covered by existing analyses. Following the ‘mono-X’ literature, the portal is modeled using either an effective field theoretic contact operator approach or with one of two ultraviolet completions; sensitivity projections are provided for all three cases. We additionally highlight that the LHC has a unique advantage over direct detection experiments in the search for this class of dark matter theories.},
doi = {10.1007/jhep11(2017)196},
journal = {Journal of High Energy Physics (Online)},
number = 11,
volume = 2017,
place = {United States},
year = {2017},
month = {11}
}

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Cited by: 16 works
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