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Search for pair-produced resonances each decaying into at least four quarks in proton-proton collisions at √s = 13 TeV

Search for pair-produced resonances each decaying into at least four quarks in proton-proton collisions at √s = 13 TeV
Search for pair-produced resonances each decaying into at least four quarks in proton-proton collisions at √s = 13 TeV
This Letter presents the results of a search for pair-produced particles of masses above 100 GeV that each decay into at least four quarks. Using data collected by the CMS experiment at the LHC in 2015–2016, corresponding to an integrated luminosity of 38.2 fb−1, reconstructed particles are clustered into two large jets of similar mass, each consistent with four-parton substructure. No statistically significant excess of data over the background prediction is observed in the distribution of average jet mass. Pair-produced squarks with dominant hadronic R-parity-violating decays into four quarks and with masses between 0.10 and 0.72 TeV are excluded at 95% confidence level. Similarly, pair-produced gluinos that decay into five quarks are also excluded with masses between 0.10 and 1.41 TeV at 95% confidence level. These are the first constraints that have been placed on pair-produced particles with masses below 400 GeV that decay into four or five quarks, bridging a significant gap in the coverage of R-parity-violating supersymmetry parameter space.
1079-7114
1-18
Sirunyan, A.M.
846a7137-803d-49de-aae7-d6b85519e829
Belyaev, A.
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
The CMS Collaboration
Sirunyan, A.M.
846a7137-803d-49de-aae7-d6b85519e829
Belyaev, A.
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3

Sirunyan, A.M. , The CMS Collaboration (2018) Search for pair-produced resonances each decaying into at least four quarks in proton-proton collisions at √s = 13 TeV. Physical Review Letters, 1-18, [141802]. (doi:10.1103/PhysRevLett.121.141802).

Record type: Article

Abstract

This Letter presents the results of a search for pair-produced particles of masses above 100 GeV that each decay into at least four quarks. Using data collected by the CMS experiment at the LHC in 2015–2016, corresponding to an integrated luminosity of 38.2 fb−1, reconstructed particles are clustered into two large jets of similar mass, each consistent with four-parton substructure. No statistically significant excess of data over the background prediction is observed in the distribution of average jet mass. Pair-produced squarks with dominant hadronic R-parity-violating decays into four quarks and with masses between 0.10 and 0.72 TeV are excluded at 95% confidence level. Similarly, pair-produced gluinos that decay into five quarks are also excluded with masses between 0.10 and 1.41 TeV at 95% confidence level. These are the first constraints that have been placed on pair-produced particles with masses below 400 GeV that decay into four or five quarks, bridging a significant gap in the coverage of R-parity-violating supersymmetry parameter space.

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PhysRevLett.121.141802 - Version of Record
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e-pub ahead of print date: 5 October 2018
Published date: 5 October 2018

Identifiers

Local EPrints ID: 426062
URI: http://eprints.soton.ac.uk/id/eprint/426062
ISSN: 1079-7114
PURE UUID: ed93c9c4-64b7-47bc-a523-2917e4a36e03
ORCID for A. Belyaev: ORCID iD orcid.org/0000-0002-1733-4408

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Date deposited: 12 Nov 2018 17:30
Last modified: 26 Nov 2021 02:52

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Contributors

Author: A.M. Sirunyan
Author: A. Belyaev ORCID iD
Corporate Author: The CMS Collaboration

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