2026-10-19T00:02:59Zhttps://ebyu-rdlopen.rawdatalibrary.net/oai/request

oai:ebyu-rdlopen.rawdatalibrary.net:ebyu/104182026-10-18T20:25:38Zopenairedrivercom_ebyu_10000col_ebyu_10001

Jet fragmentation function and groomed substructure of bottom quark jets in proton-proton collisions at 5.02 TeVChekhovsky, V.Hayrapetyan, A.Makarenko, V.Tumasyan, A.Adam, W.Andrejkovic, J.W.Benato, L.Bergauer, T.Chatterjee, S.Damanakis, K.Dragicevic, M.Hussain, P.S.Jeitler, M.Krammer, N.Li, A.Liko, D.Mikulec, I.Schieck, J.Schwarz, D.Schöfbeck, R.Sonawane, M.Waltenberger, W.Wulz, C.-E.Janssen, T.Kwon, H.Van Laer, T.Van Mechelen, P.Breugelmans, N.D’Hondt, J.Dansana, S.De Moor, A.Delcourt, M.Heyen, F.Hong, Y.Lowette, S.Makarenko, I.Müller, D.Tavernier, S.Tytgat, M.Van Onsem, G.P.Van Putte, S.Vannerom, D.Bilin, B.Clerbaux, B.Das, A.K.De Bruyn, I.De Lentdecker, G.Evard, H.Favart, L.Gianneios, P.Hadron-Hadron ScatteringJet PhysicsJet Substructure and Boosted JetsA measurement of the substructure of bottom quark jets (b jets) in proton-proton (pp) collisions is presented. The measurement uses data collected in pp collisions at s=5.02 TeV, with a low number of simultaneous interactions per bunch crossing, recorded by the CMS experiment in 2017, corresponding to an integrated luminosity of 301 pb−1. An algorithm to identify and cluster the charged decay daughters of b hadrons is developed for this analysis, which facilitates the exposure of the gluon radiation pattern of b jets using iterative Cambridge-Aachen declustering. The soft-drop-groomed jet radius, Rg, and momentum balance, zg, of b quark jets are presented. These observables can be used to test perturbative quantum chromodynamics predictions that account for mass effects. Because the b hadron is partially reconstructed from its charged decay daughters, only charged particles are used for the jet substructure studies. In addition, a jet fragmentation function, zb,ch, is measured, which is defined as the distribution of the ratio of the transverse momentum (pT) of the partially reconstructed b hadron with respect to the charged-particle component of the jet pT. The substructure variable distributions are unfolded to the charged-particle level. The b jet substructure is compared to the substructure of jets in an inclusive jet sample that is dominated by light-quark and gluon jets in order to assess the role of the b quark mass. A strong suppression of emissions at small Rg values is observed for b jets when compared to inclusive jets, consistent with the dead-cone effect. The measurement is also compared with theoretical predictions from Monte Carlo event generators. This is the first substructure measurement of b jets that clusters together the b hadron decay daughters independent of the b hadron species and decay channel. © The Author(s) 2026.Springer Science and Business Media Deutschland GmbH2026Articlehttps://rdlopen.rawdatalibrary.net/r/ebyu/10418https://doi.org/10.1007/jhep04(2026)1471029-8479enJournal of High Energy Physicsinfo:eu-repo/semantics/openAccessinfo:eu-repo/semantics/articlehttps://ebyu-rdlopen.rawdatalibrary.net/tr/items/ebyu/10418