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 cluster...

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Published in:Physical review letters 2018-10, Vol.121 (14), Article 141802
Main Authors: Wulz, C.-E., Zarucki, M., Mossolov, V., Vit, M., Sanchez Rosas, L. J., Kolosova, M., Razis, P. A., Abdulsalam, A., Amendola, C., Jansová, M., El Mamouni, H., Sordini, V., Lipinski, M., Albert, A., Knutzen, S., Merschmeyer, M., Centis Vignali, M., Dreyer, T., Stober, F. M., Katkov, I., Papadopoulos, I., Swain, S. K., Kumar, R., Sharma, R., Kumar, V., Kumar, S., Fiore, L., Zito, G., Chatterjee, K., Bisello, D., Checchia, P., Dosselli, U., Magnani, A., Montagna, P., Ressegotti, M., Lariccia, P., Ligabue, F., Santanastasio, F., Demaria, N., Son, D. C., Ibrahim, Z. A., Zolkapli, Z., Oropeza Barrera, C., Vazquez Valencia, F., Seixas, J., Shulha, S., Spiridonov, A., Aushev, T., Petrushanko, S., Skovpen, Y., Volkov, A., Milosevic, J., Cabrillo, I. J., Fasanella, D., Fulcher, J., Gigi, D., Treille, D., Lustermann, W., Lin, W., Tok, U. G., Smith, V. J., Nash, J., Summers, S., Tapper, A., Madrid, C., Mcmaster, B., Cooper, S. I., Heintz, U., Hogan, J. M., Kukral, O., Mulhearn, M., Mccoll, N., Olmedo Negrete, M., Wei, H., Patterson, J. R., Ryd, A., Lipton, R., Rakness, G., Tkaczyk, S., Wang, M., Weber, H. A., Mills, C., Bean, A., Majumder, D., Maravin, Y., Rappoccio, S., Teixeira De Lima, R., Hurtado Anampa, K., Geurts, F. J. M., Taus, R., Agapitos, A., Hughes, E., Nash, K., Delannoy, A. G., Heideman, J., De Mattia, M., Gurrola, A., Janjam, R., Hirosky, R., Dasu, S.
Format: Article
Language:English
Subjects:
Confidence intervals
Large Hadron Collider
Luminosity
Parity
Particle collisions
Particle decay
Quarks
Solenoids
Substructures
Supersymmetry
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Summary: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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.121.141802