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Title: Search for physics beyond the standard model in events with overlapping photons and jets

Abstract

Results are reported from a search for new particles that decay into a photon and two gluons, in events with jets. Novel jet substructure techniques are developed that allow photons to be identified in an environment densely populated with hadrons. The analyzed proton-proton collision data were collected by the CMS experiment at the LHC, in 2016 at $$ \sqrt{s}$$ = 13 TeV, and correspond to an integrated luminosity of 35.9 fb -1. The spectra of total transverse hadronic energy of candidate events are examined for deviations from the standard model predictions. No statistically significant excess is observed over the expected background. The first cross section limits on new physics processes resulting in such events are set. The results are interpreted as upper limits on the rate of gluino pair production, utilizing a simplified stealth supersymmetry model. The excluded gluino masses extend up to 1.7 TeV, for a neutralino mass of 200 GeV and exceed previous mass constraints set by analyses targeting events with isolated photons.

Authors:
;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
CMS Collaboration
OSTI Identifier:
1579256
Report Number(s):
arXiv:1907.06275; FERMILAB-PUB-19-427-CMS; CMS-B2G-18-007; CERN-EP-2019-135
Journal ID: ISSN 0031-9007; PRLTAO; oai:inspirehep.net:1743890
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 123; Journal Issue: 24; 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

Citation Formats

Sirunyan, Albert M, and et al. Search for physics beyond the standard model in events with overlapping photons and jets. United States: N. p., 2019. Web. doi:10.1103/PhysRevLett.123.241801.
Sirunyan, Albert M, & et al. Search for physics beyond the standard model in events with overlapping photons and jets. United States. doi:10.1103/PhysRevLett.123.241801.
Sirunyan, Albert M, and et al. Wed . "Search for physics beyond the standard model in events with overlapping photons and jets". United States. doi:10.1103/PhysRevLett.123.241801. https://www.osti.gov/servlets/purl/1579256.
@article{osti_1579256,
title = {Search for physics beyond the standard model in events with overlapping photons and jets},
author = {Sirunyan, Albert M and et al.},
abstractNote = {Results are reported from a search for new particles that decay into a photon and two gluons, in events with jets. Novel jet substructure techniques are developed that allow photons to be identified in an environment densely populated with hadrons. The analyzed proton-proton collision data were collected by the CMS experiment at the LHC, in 2016 at $ \sqrt{s}$ = 13 TeV, and correspond to an integrated luminosity of 35.9 fb-1. The spectra of total transverse hadronic energy of candidate events are examined for deviations from the standard model predictions. No statistically significant excess is observed over the expected background. The first cross section limits on new physics processes resulting in such events are set. The results are interpreted as upper limits on the rate of gluino pair production, utilizing a simplified stealth supersymmetry model. The excluded gluino masses extend up to 1.7 TeV, for a neutralino mass of 200 GeV and exceed previous mass constraints set by analyses targeting events with isolated photons.},
doi = {10.1103/PhysRevLett.123.241801},
journal = {Physical Review Letters},
number = 24,
volume = 123,
place = {United States},
year = {2019},
month = {12}
}

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