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Title: Search for high-mass diphoton resonances in proton-proton collisions at 13 TeV and combination with 8 TeV search

Abstract

A search for the resonant production of high-mass photon pairs is presented. The search focuses on spin-0 and spin-2 resonances with masses between 0.5 and 4.5 TeV, and with widths, relative to the mass, between 1.4 ×10 -4 and 5.6 ×10 -2. The data sample corresponds to an integrated luminosity of 12.9 fb -1 of proton–proton collisions collected with the CMS detector in 2016 at a center-of-mass energy of 13TeV. No significant excess is observed relative to the standard model expectation. The results of the search are combined statistically with those previously obtained in 2012 and 2015 at $$\sqrt{s}$$ = 8 and 13 TeV, respectively, corresponding to integrated luminosities of 19.7 and 3.3 fb -1, to derive exclusion limits on scalar resonances produced through gluon-gluon fusion, and on Randall-Sundrum gravitons. The lower mass limits for Randall-Sundrum gravitons range from 1.95 to 4.45 TeV for coupling parameters between 0.01 and 0.2. These are the most stringent limits on Randall-Sundrum graviton production to date.

Authors:
 [1]
  1. et al.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
CMS Collaboration
OSTI Identifier:
1343166
Alternate Identifier(s):
OSTI ID: 1335120; OSTI ID: 1395326
Report Number(s):
FERMILAB-PUB-16-375-CMS; CMS-EXO-16-027; CERN-EP-2016-216; arXiv:1609.02507; CMS-EXO-16-02
Journal ID: ISSN 0370-2693; 1485702
Grant/Contract Number:  
AC02-07CH11359; AC52-07NA27344
Resource Type:
Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Volume: 767; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CMSextra dimensions; Randall–Sundrum; Heavy resonance; Spin-0; Diphoton

Citation Formats

Khachatryan, Vardan. Search for high-mass diphoton resonances in proton-proton collisions at 13 TeV and combination with 8 TeV search. United States: N. p., 2017. Web. doi:10.1016/j.physletb.2017.01.027.
Khachatryan, Vardan. Search for high-mass diphoton resonances in proton-proton collisions at 13 TeV and combination with 8 TeV search. United States. doi:10.1016/j.physletb.2017.01.027.
Khachatryan, Vardan. Thu . "Search for high-mass diphoton resonances in proton-proton collisions at 13 TeV and combination with 8 TeV search". United States. doi:10.1016/j.physletb.2017.01.027.
@article{osti_1343166,
title = {Search for high-mass diphoton resonances in proton-proton collisions at 13 TeV and combination with 8 TeV search},
author = {Khachatryan, Vardan},
abstractNote = {A search for the resonant production of high-mass photon pairs is presented. The search focuses on spin-0 and spin-2 resonances with masses between 0.5 and 4.5 TeV, and with widths, relative to the mass, between 1.4 ×10-4 and 5.6 ×10-2. The data sample corresponds to an integrated luminosity of 12.9 fb-1 of proton–proton collisions collected with the CMS detector in 2016 at a center-of-mass energy of 13TeV. No significant excess is observed relative to the standard model expectation. The results of the search are combined statistically with those previously obtained in 2012 and 2015 at $\sqrt{s}$ = 8 and 13 TeV, respectively, corresponding to integrated luminosities of 19.7 and 3.3 fb-1, to derive exclusion limits on scalar resonances produced through gluon-gluon fusion, and on Randall-Sundrum gravitons. The lower mass limits for Randall-Sundrum gravitons range from 1.95 to 4.45 TeV for coupling parameters between 0.01 and 0.2. These are the most stringent limits on Randall-Sundrum graviton production to date.},
doi = {10.1016/j.physletb.2017.01.027},
journal = {Physics Letters B},
number = ,
volume = 767,
place = {United States},
year = {2017},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1016/j.physletb.2017.01.027

Citation Metrics:
Cited by: 41 works
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Figures / Tables:

Fig. 1. Fig. 1.: The observed invariant mass spectra mγγ for selected events in the (top) EBEB and (bottom) EBEE categories. There are no selected events with mγγ > 2000 GeV. The solid lines and the shaded bands show the results of likelihood fits to the data together with the associated 1more » and 2 standard deviation statistical uncertainty bands. The ratio of the difference between the data and the fit to the statistical uncertainty in the data is given in the lower plots.« less

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Works referencing / citing this record:

Search for high-mass diphoton resonances in proton–proton collisions at 13 TeV and combination with 8 TeV search
text, January 2017


Gauge-Singlet Vector-Like Fermion Dark Matter, LHC Diphoton Rate, and Direct Detection
journal, January 2017

  • Gopalakrishna, Shrihari; Mukherjee, Tuhin Subhra
  • Advances in High Energy Physics, Vol. 2017
  • DOI: 10.1155/2017/8689270

Exclusion Limits on a Scalar Decaying to Photons and Distinguishing Its Production Mechanisms
journal, January 2018


Diphoton resonances at the LHC
journal, August 2017


    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.