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| 題名: | Transverse momentum spectra of inclusive b jets in pPb collisions at √sNN=5.02 TeV |
| 作者: | 余欣珊;Sirunyan, A.M.;Hartl, C.;Jeitler, M.;Knutsson, A.;Randle-conde, A.;Vander Velde, C.;Zenoni, F.;Garcia, G.;Favart, D.;Hamer, M.;Hensel, C.;Puljak, I.;Luetic, J.;Ptochos, F.;Razis, P.A.;Florent, A.;Nguyen, M.;Heister, A.;Ostapchuk, A.;Schulte, J.F.;Millet, P.;Melzer-Pellmann, I.-A.;Placakyte, R.;Schoerner-Sadenius, T.;Schröder, M.;Hartmann, F.;Mozer, M.U.;Röcker, S.;Daskalakis, G.;Kokkas, P.;Roy Chowdhury, S.;Dutta, D.;Rezaei Hosseinabadi, F.;Nuzzo, S.;Rovelli, T.;Chiorboli, M.;Giordano, F.;Tropiano, A.;Pedrini, D.;Salvini, P.;Bernardini, J.;Fedi, G.;Squillacioti, P.;Biino, C.;Candelise, V.;Kim, H.;Lee, K.S.;Ibrahim, Z.A.;Hoorani, H.R.;Górski, M.;Romanowska-Rybinska, K.;Zalewski, P.;Doroba, K.;Kalinowski, A.;Ferreira Parracho, P.G.;Rodrigues Antunes, J.;Seixas, J.;Shulha, S.;Safronov, G.;Lopez Virto, A.;Vilar Cortabitarte, R.;Kortelainen, M.J.;Bertl, W.;Ingram, Q.;Buchmann, M.A.;Marionneau, M.;Musella, P.;Hsiung, Y.;Ozdemir, K.;Meng, Z.;Senkin, S.;Fulcher, J.;Turner, M.;Liu, H.;Gardner, M.;Wei, H.;Sani, M.;Jensen, F.;Thom, J.;Johnson, M.;Kreis, B.;Vidal, R.;Avery, P.;Hugon, J.;Betts, R.R.;Tiras, E.;Blumenfeld, B.;Demiragli, Z.;Salfeld-Nebgen, J.;Nourbakhsh, S.;Lujan, P.;Mooney, M.;Shi, X.;Michlin, B.;Roberts, J.;Panwalkar, S.;Mueller, R.;Xia, F.;Karchin, P.E.;Christian, A. |
| 貢獻者: | 理學院物理學系 |
| 關鍵詞: | b-tagging;CMS;Heavy ions;Physics |
| 日期: | 2016-03-10 |
| 上傳時間: | 2026-04-23 14:45:44 (UTC+8) |
| 出版者: | Elsevier B.V |
| 摘要: | 摘要： We present a measurement of b jet transverse momentum (pT) spectra in proton-lead (pPb) collisions using a dataset corresponding to about 35 nb−1 collected with the CMS detector at the LHC. Jets from b quark fragmentation are found by exploiting the long lifetime of hadrons containing a b quark through tagging methods using distributions of the secondary vertex mass and displacement. Extracted cross sections for b jets are scaled by the effective number of nucleon–nucleon collisions and are compared to a reference obtained from pythia simulations of pp collisions. The pythia-based estimate of the nuclear modification factor is found to be 1.22±0.15(stat+syst pPb)±0.27(syst pythia) averaged over all jets with pT between 55 and 400 GeV/c and with |ηlab|<2. We also compare this result to predictions from models using perturbative calculations in quantum chromodynamics.
出版者： Elsevier B.V
出版日期： 2016-03-10
出處： Physics letters. B, 2016-03, Vol.754 (C), p.59-80
資源來源： Elsevier ScienceDirect Journals Complete
版權： 2016 CERN for the benefit of the CMS Collaboration
識別號： ISSN: 0370-2693
識別號： EISSN: 1873-2445
識別號： DOI: 10.1016/j.physletb.2016.01.010 |
| 顯示於類別: | [物理學系] 期刊論文
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