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| 題名: | Search for s channel single top quark production in pp collisions at √s = 7 and 8 TeV |
| 作者: | 林宗泰;Rahbaran, B.;Schieck, J.;Tavernier, S.;Brun, H.;Caillol, C.;Clerbaux, B.;Karapostoli, G.;Perniè, L.;Moraes, A.;Pavlov, B.;Petkov, P.;Brigljevic, V.;Finger, M.;Raidal, M.;Ferri, F.;Ortona, G.;Fontaine, J.-C.;Mirabito, L.;Ruiz Alvarez, J. D.;Radziej, M.;Nugent, I. M.;Asin, I.;Dooling, S.;Lobanov, A.;Chwalek, T.;Descroix, A.;Mildner, H.;Williamson, S.;Hidas, P.;Zsigmond, A. J.;Bartók, M.;Aziz, T.;Chatterjee, R. M.;Kothekar, K.;Etesami, S. M.;Paktinat Mehdiabadi, S.;Abbrescia, M.;Radogna, R.;Ranieri, A.;Campanini, R.;Marcellini, S.;Giordano, F.;Sguazzoni, G.;Piccolo, D.;Monge, M. R.;Gennai, S.;Pozzobon, N.;Ronchese, P.;Saha, A.;Lee, B.;Morelos Pineda, A.;Ahmad, M.;Perelygin, V.;Danilov, M.;Bayshev, I.;Cuevas, J.;Dabrowski, A.;Dorney, B.;Guida, R.;Bianchini, L.;Casal, B.;Donegà, M.;Martinez Ruiz del Arbol, P.;Tavolaro, V. R.;Grundler, U.;Dozen, C.;Hos, I.;Burton, D.;Lucas, R.;Seez, C.;Rohlf, J.;Heintz, U.;Clare, R.;Pieri, M.;Franco Sevilla, M.;Xie, S.;Wittich, P.;Lykken, J.;Strobbe, N.;Kotov, K.;Shchutska, L.;Sperka, D.;Terentyev, N.;Rodriguez, J. L.;Hofman, D. J.;Fehling, D.;Baringer, P.;Murray, M.;Musienko, Y.;Reinsvold, A.;Taroni, S.;Medvedeva, T.;Kumar, A.;Kunnawalkam Elayavalli, R.;Lath, A.;Walker, M.;Foerster, M.;Huang, T.;Ledovskoy, A.;Wolfe, E. |
| 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: | 2016-09-01 |
| 上傳時間: | 2026-04-23 13:52:53 (UTC+8) |
| 出版者: | Berlin/Heidelberg: Springer Berlin Heidelberg |
| 摘要: | 摘要： A bstract A search is presented for single top quark production in the s channel in proton-proton collisions with the CMS detector at the CERN LHC in decay modes of the top quark containing a muon or an electron in the final state. The signal is extracted through a maximum-likelihood fit to the distribution of a multivariate discriminant defined using boosted decision trees to separate the expected signal contribution from background processes. The analysis uses data collected at centre-of-mass energies of 7 and 8 TeV and corresponding to integrated luminosities of 5.1 and 19.7 fb −1 , respectively. The measured cross sections of 7.1 ± 8.1 pb (at 7 TeV) and 13.4 ± 7.3 pb (at 8 TeV) result in a best fit value of 2.0 ± 0.9 for the combined ratio of the measured and expected values. The signal significance is 2.5 standard deviations, and the upper limit on the rate relative to the standard model expectation is 4.7 at 95% confidence level.
其他題名： J. High Energ. Phys
出版者： Berlin/Heidelberg: Springer Berlin Heidelberg
出版日期： 2016-09-06
出處： The journal of high energy physics, 2016-09, Vol.2016 (9)
資源來源： Publicly available content database
版權： The Author(s) 2016
識別號： EISSN: 1029-8479
識別號： DOI: 10.1007/JHEP09(2016)027 |
| 顯示於類別: | [物理學系] 期刊論文
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