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  • Study of quark and gluon je...
    Pitters, F. M.; Schieck, J.; Templ, S.; Darwish, M. R.; Thomas, L.; Zhang, S.; Wang, Q.; Lu, M.; Avila, C.; Roguljic, M.; Finger, M.; Brücken, E.; Lotti, M.; Tuominiemi, J.; Petrow, H.; Tuuva, T.; Bernet, C.; Feld, L.; Fischer, B.; Stahl, A.; Ziemons, T.; Bhattacharya, S.; Singh, A.; Heidecker, C.; Savoiu, D.; Shvetsov, I.; Teyssier, D.; Bansal, S.; Maity, M.; Sahu, B.; Dutta, D.; Siroli, G. P.; Bacchetta, N.; Calzaferri, S.; Ratti, S. P.; Vitulo, P.; Menichelli, M.; Spiga, D.; Mandorli, G.; Organtini, G.; Solano, A.; Park, S. K.; Lee, S.; Jeong, Y.; Carvalho Antunes De Oliveira, A.; Juodagalvis, A.; Rinkevicius, A.; Krofcheck, D.; Awan, M. I. M.; Niknejad, T.; Golovtcov, V.; Uvarov, L.; Dubinin, M.; Ovtin, I.; Elumakhov, D.; Cepeda, M.; Perez Dengra, C.; Piedra Gomez, J.; Perera, N.; Chhibra, S. S.; Fasanella, D.; Hegeman, J.; Caminada, L.; Bärtschi, P.; Chen, P. H.; Komurcu, Y.; Kaynak, B.; Bhal, E.; Davies, G.; Vojinovic, M.; Abdullin, S.; Saunders, M.; Sawant, S.; Demiragli, Z.; Heintz, U.; Usai, E.; Ignatenko, M.; Stone, B.; Giannini, L.; Dutta, V.; Mantilla, C.; Merkel, P.; Pena, C.; Muthirakalayil Madhu, A.; Warner, Z.; Modak, A.; Roland, G.; Hansen, P.; Hiltbrand, J.; Bloom, K.; Pekkanen, J.; Velasco, M.; Loukas, N.; Cardwell, B.; Elmer, P.; Stickland, D.; Chawla, R.; Thieman, J.; Salur, S.; Whitbeck, A.

    The journal of high energy physics, 01/2022, Letnik: 2022, Številka: 1
    Journal Article

    A bstract Measurements of jet substructure describing the composition of quark- and gluon-initiated jets are presented. Proton-proton (pp) collision data at s = 13 TeV collected with the CMS detector are used, corresponding to an integrated luminosity of 35.9 fb − 1 . Generalized angularities are measured that characterize the jet substructure and distinguish quark- and gluon-initiated jets. These observables are sensitive to the distributions of transverse momenta and angular distances within a jet. The analysis is performed using a data sample of dijet events enriched in gluon-initiated jets, and, for the first time, a Z+jet event sample enriched in quark-initiated jets. The observables are measured in bins of jet transverse momentum, and as a function of the jet radius parameter. Each measurement is repeated applying a “soft drop” grooming procedure that removes soft and large angle radiation from the jet. Using these measurements, the ability of various models to describe jet substructure is assessed, showing a clear need for improvements in Monte Carlo generators.