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| 題名: | Search for anomalous single top quark production in association with a photon in pp collisions at √s = 8 TeV |
| 作者: | 余欣珊;Alderweireldt, S.;Tavernier, S.;Brun, H.;Caillol, C.;Clerbaux, B.;Seva, T.;Zenoni, F.;Crucy, S.;Poyraz, D.;Popov, A.;Beliy, N.;Da Costa, E. M.;Mercadante, P. G.;Romero Abad, D.;Chen, M.;Cabrera, A.;Attikis, A.;Raidal, M.;Faure, J. L.;Conte, E.;Depasse, P.;Kuessel, Y.;Lipka, K.;Pitzl, D.;Roland, B.;Nowatschin, D.;Chwalek, T.;Weber, M.;Kyriakis, A.;Saoulidou, N.;Tziaferi, E.;Paradas, E.;Karancsi, J.;Kumar, Ashok;Garg, R. B.;Majumdar, N.;Kumar, V.;Sarkar, T.;Behnamian, H.;Fiore, L.;Cavallo, F. R.;Chiorboli, M.;Iorio, A. O. M.;Santocchia, A.;Organtini, G.;Obertino, M. M.;Candelise, V.;Gyun, D.;Nawrocki, K.;Olszewski, M.;Afanasiev, S.;Bunin, P.;Golutvin, I.;Perelygin, V.;Smirnov, V.;Mesyats, G.;Azhgirey, I.;Delgado Peris, A.;Flix, J.;Cabrillo, I. J.;Di Marco, E.;Kousouris, K.;Lucchini, M. T.;Dissertori, G.;Adiguzel, A.;Hos, I.;Vardarlı, F. I.;Smith, D.;Khan, A.;Symonds, P.;Hatakeyama, K.;Ferapontov, A.;Yohay, R.;Kennedy, E.;Lacroix, F.;Gottschalk, E.;Hasegawa, S.;Mason, D.;Merkel, P.;Rakness, G.;Yang, F.;Berry, D.;Lee, Y.-J.;Luckey, P. D.;Kumar, A.;Morse, D. M.;Hahn, K. A.;Marlow, D.;Saka, H.;de Barbaro, P.;Eshaq, Y.;Contreras-Campana, E.;Riley, G.;Perloff, A.;Ni, H.;Wang, Y.;Belknap, D. A.;Dodd, L.;Mohapatra, A.;Sarangi, T. |
| 貢獻者: | 理學院物理學系 |
| 關鍵詞: | Classical and Quantum Gravitation;Elementary Particles;Physics;Physics and Astronomy;Quantum Field Theories;Quantum Field Theory;Quantum Physics;Regular Article - Experimental Physics;Relativity Theory;String Theory |
| 日期: | 2016-04-01 |
| 上傳時間: | 2026-04-23 12:57:54 (UTC+8) |
| 出版者: | Berlin/Heidelberg: Springer Berlin Heidelberg |
| 摘要: | 摘要： A bstract The result of a search for flavor changing neutral currents (FCNC) through single top quark production in association with a photon is presented. The study is based on proton-proton collisions at a center-of-mass energy of 8 TeV using data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.8 fb −1 . The search for tγ events where t → Wb and W → μν is conducted in final states with a muon, a photon, at least one hadronic jet with at most one being consistent with originating from a bottom quark, and missing transverse momentum. No evidence of single top quark production in association with a photon through a FCNC is observed. Upper limits at the 95% confidence level are set on the tuγ and tcγ anomalous couplings and translated into upper limits on the branching fraction of the FCNC top quark decays: ℬ(t → u γ ) < 1.3 × 10 − 4 and ℬ(t → c γ ) < 1.7 × 10 − 3 . Upper limits are also set on the cross section of associated tγ production in a restricted phase-space region. These are the most stringent limits currently available.
其他題名： J. High Energ. Phys
出版者： Berlin/Heidelberg: Springer Berlin Heidelberg
出版日期： 2016-04-06
出處： The journal of high energy physics, 2016-04, Vol.2016 (4)
資源來源： Springer Nature Open Access Journals (NTUSG)
版權： The Author(s) 2016
識別號： EISSN: 1029-8479
識別號： DOI: 10.1007/JHEP04(2016)035 |
| 顯示於類別: | [物理學系] 期刊論文
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