Searches for new physics using the tt̄ invariant mass distribution in pp collisions at √s=8 TeV

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Title:	Searches for new physics using the tt̄ invariant mass distribution in pp collisions at √s=8 TeV
Authors:	林宗泰;Chatrchyan, S.;Waltenberger, W.;Pagano, D.;Malbouisson, H.;Tonelli Manganote, E. J.;Dimitrov, A.;Pavlov, B.;Tao, J.;Luetic, J.;Assran, Y.;Müntel, M.;Kortelainen, M. J.;Besancon, M.;Fabbro, B.;Ferri, F.;Conte, E.;Le Bihan, A.-C.;Beaupere, N.;Edelhoff, M.;Caudron, J.;Hebbeker, T.;Steggemann, J.;Hoehle, F.;Geiser, A.;Melzer-Pellmann, I.-A.;Schum, T.;Butz, E.;Held, H.;Geralis, T.;Parida, B.;Wickramage, N.;Marangelli, B.;Gallo, E.;Benaglia, A.;Giubilato, P.;Spagnolo, P.;Tenchini, R.;Verdini, P. G.;Maselli, S.;Belforte, S.;Juodagalvis, A.;Villasenor-Cendejas, L. M.;Morelos Pineda, A.;Hoorani, H. R.;Boimska, B.;Markina, A.;Kachanov, V.;Adzic, P.;Battilana, C.;Chamizo Llatas, M.;Piedra Gomez, J.;Brochero Cifuentes, J. A.;Chuang, S. H.;Munoz Sanchez, F. J.;Rodrigo, T.;Dobson, M.;Glege, F.;Piparo, D.;Simon, M.;Bartalini, P.;Chao, Y.;Ozdemir, K.;Günaydin, Y. O.;Frazier, R.;Newbold, D. M.;Bell, K. W.;Harper, S.;Iles, G.;Sparrow, A.;Miceli, T.;Everaerts, P.;Long, O. R.;Würthwein, F.;West, C.;Di Marco, E.;Winstrom, L.;Bhat, P. C.;Konigsberg, J.;Milenovic, P.;Skhirtladze, N.;Yelton, J.;Varelas, N.;Tiras, E.;Barnett, B. A.;Blumenfeld, B.;Wood, J. S.;Maravin, Y.;Svintradze, I.;Temple, J.;Yilmaz, Y.;Dolen, J.;Pozdnyakov, A.;Luo, W.;Pearson, T.;Lujan, P.;Stickland, D.;Lungu, G.;Cerizza, G.;Montalvo, R.;Perloff, A.
Contributors:	理學院物理學系
Date:	2013-11-21
Issue Date:	2026-04-23 14:21:04 (UTC+8)
Publisher:	United States
Abstract:	摘要： Searches for anomalous top quark-antiquark production are presented, based on pp collisions at √s=8 TeV. The data, corresponding to an integrated luminosity of 19.7 fb(-1), were collected with the CMS detector at the LHC. The observed tt¯ invariant mass spectrum is found to be compatible with the standard model prediction. Limits on the production cross section times branching fraction probe, for the first time, a region of parameter space for certain models of new physics not yet constrained by precision measurements. 其他題名： Phys Rev Lett 出版者： United States 出版日期： 2013-11-22 出處： Physical review letters, 2013-11, Vol.111 (21), p.211804, Article 211804 資源來源： American Physical Society Journals 識別號： ISSN: 0031-9007 識別號： ISSN: 1079-7114 識別號： EISSN: 1079-7114 識別號： DOI: 10.1103/PhysRevLett.111.211804 識別號： PMID: 24313480
Appears in Collections:	[Department of Physics] journal & Dissertation

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