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.

Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., et al. (2018). Search for Pair-Produced Resonances Each Decaying into at Least Four Quarks in Proton-Proton Collisions at s =13 TeV. PHYSICAL REVIEW LETTERS, 121(14) [10.1103/PhysRevLett.121.141802].

Search for Pair-Produced Resonances Each Decaying into at Least Four Quarks in Proton-Proton Collisions at s =13 TeV

Ortona G.;Benaglia A.;Dinardo M. E.;Ghezzi A.;Govoni P.;Massironi A.;Moroni L.;Paganoni M.;Ragazzi S.;Tabarelli De Fatis T.;Gerosa R.;Lucchini M. T.;De Guio F.;
2018

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.
Articolo in rivista - Articolo scientifico
CMS
English
2018
121
14
141802
none
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., et al. (2018). Search for Pair-Produced Resonances Each Decaying into at Least Four Quarks in Proton-Proton Collisions at s =13 TeV. PHYSICAL REVIEW LETTERS, 121(14) [10.1103/PhysRevLett.121.141802].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/424058
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