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Title: Search for Higgs and Z boson decays to J/$$\psi$$ or $$\Upsilon$$ pairs in proton-proton collisions at $$\sqrt{s}=$$ 13 TeV

Abstract

A search for decays of the Higgs and Z boson to pairs of J/$$\psi$$ or $$\Upsilon$$(nS) (n=1, 2, 3) mesons, with their subsequent decay to $$\mu^+\mu^-$$ pairs, is presented. The analysis uses data from proton-proton collisions at $$\sqrt{s}=$$ 13 TeV, collected with the CMS detector at the LHC in 2017 and corresponding to an integrated luminosity of 37.5 fb$$^{-1}$$. While an observation of such a decay with this sample would indicate the presence of physics beyond the standard model, no significant excess is observed. Upper limits at 95% confidence level are placed on the branching fractions of these decays. In the J/$$\psi$$ pair channel, the limits are 1.8$$\times$$10$$^{-3}$$ and 2.2$$\times$$10$$^{-6}$$ for the Higgs and Z boson, respectively, while in the combined $$\Upsilon$$(nS) pair channel, the limits are 1.4$$\times$$ 10$$^{-3}$$ and 1.5$$\times$$10$$^{-6}$$, respectively, when the mesons from the Higgs and Z boson decay are assumed to be unpolarized. When fully longitudinal and transverse polarizations are considered the limits reduce by about 22-29% and increase by about 10-13%, respectively.

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
OSTI Identifier:
1542170
Report Number(s):
FERMILAB-PUB-19-319-CMS; arXiv:1905.10408; CMS-HIG-18-025; CERN-EP-2019-082
1736895
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
TBD
Additional Journal Information:
Journal Name: TBD
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 Higgs and Z boson decays to J/$\psi$ or $\Upsilon$ pairs in proton-proton collisions at $\sqrt{s}=$ 13 TeV. United States: N. p., 2019. Web.
Sirunyan, Albert M, & et al. Search for Higgs and Z boson decays to J/$\psi$ or $\Upsilon$ pairs in proton-proton collisions at $\sqrt{s}=$ 13 TeV. United States.
Sirunyan, Albert M, and et al. Fri . "Search for Higgs and Z boson decays to J/$\psi$ or $\Upsilon$ pairs in proton-proton collisions at $\sqrt{s}=$ 13 TeV". United States. https://www.osti.gov/servlets/purl/1542170.
@article{osti_1542170,
title = {Search for Higgs and Z boson decays to J/$\psi$ or $\Upsilon$ pairs in proton-proton collisions at $\sqrt{s}=$ 13 TeV},
author = {Sirunyan, Albert M and et al.},
abstractNote = {A search for decays of the Higgs and Z boson to pairs of J/$\psi$ or $\Upsilon$(nS) (n=1, 2, 3) mesons, with their subsequent decay to $\mu^+\mu^-$ pairs, is presented. The analysis uses data from proton-proton collisions at $\sqrt{s}=$ 13 TeV, collected with the CMS detector at the LHC in 2017 and corresponding to an integrated luminosity of 37.5 fb$^{-1}$. While an observation of such a decay with this sample would indicate the presence of physics beyond the standard model, no significant excess is observed. Upper limits at 95% confidence level are placed on the branching fractions of these decays. In the J/$\psi$ pair channel, the limits are 1.8$\times$10$^{-3}$ and 2.2$\times$10$^{-6}$ for the Higgs and Z boson, respectively, while in the combined $\Upsilon$(nS) pair channel, the limits are 1.4$\times$ 10$^{-3}$ and 1.5$\times$10$^{-6}$, respectively, when the mesons from the Higgs and Z boson decay are assumed to be unpolarized. When fully longitudinal and transverse polarizations are considered the limits reduce by about 22-29% and increase by about 10-13%, respectively.},
doi = {},
journal = {TBD},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {5}
}