Search for Resonant Production of High-Mass Photon Pairs in Proton-Proton Collisions at s =8 and 13 TeV

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题名:	Search for Resonant Production of High-Mass Photon Pairs in Proton-Proton Collisions at s =8 and 13 TeV
作者:	余欣珊;Hartl, C.;Jeitler, M.;Mossolov, V.;Giammanco, A.;Magitteri, A.;Pavlov, B.;Spiezia, A.;Razis, P. A.;Rykaczewski, H.;Luukka, P.;Couderc, F.;Baffioni, S.;Pigard, P.;Laktineh, I. B.;Popov, A.;Teyssier, D.;Müller, T.;Stahl, A.;Beernaert, K.;Roland, B.;Stefaniuk, N.;Kovalchuk, N.;Schwandt, J.;Stober, F. M.;Ulrich, R.;Loukas, N.;Hajdu, C.;Karancsi, J.;Sahoo, D. K.;Dube, S.;Sharma, S.;Zeinali, M.;Iaselli, G.;Cavallo, F. R.;Giacomelli, P.;Manzoni, R. A.;Ragazzi, S.;Lanza, G.;Lacaprara, S.;Salvini, P.;Saha, A.;Grippo, M. T.;Diemoz, M.;Longo, E.;Rovelli, C.;Costa, M.;Ravera, F.;Sekmen, S.;Seo, S. h.;Lee, J. S. H.;Yusli, M. N.;Sanchez-Hernandez, A.;Shoaib, M.;Dermenev, A.;Tlisov, D.;Toropin, A.;Lychkovskaya, N.;Klyukhin, V.;Miagkov, I.;Petrov, V.;Volkov, A.;d’Enterria, D.;Daponte, V.;Moortgat, F.;Orsini, L.;Rolandi, G.;Hoss, J.;Masciovecchio, M.;Nessi-Tedaldi, F.;Kara, O.;Yetkin, T.;Henderson, C.;Berry, E.;Landsberg, G.;Florent, A.;Hanson, G.;Lawhorn, J. M.;Elvira, V. D.;Tkaczyk, S.;Konigsberg, J.;Mitselmakher, G.;Hohlmann, M.;Dilsiz, K.;Gandrajula, R. P.;Bean, A.;Tapia Takaki, J. D.;Mohammadi, A.;Jabeen, S.;Mignerey, A. C.;Iiyama, Y.;Klute, M.;Kamalieddin, R.;Low, J. F.;Liu, B.;Palmer, C.;Rorie, J.;Ferbel, T.;Salur, S.;Cox, B.;Hirosky, R.
贡献者:	理學院物理學系
关键词:	Collisions;Compatibility;Luminosity;Origins;Photons;PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;Scalars;Searching;Standard deviation
日期:	2016-07-28
上传时间:	2026-04-23 13:50:50 (UTC+8)
出版者:	United States: American Physical Society
摘要:	摘要： A search for the resonant production of high-mass photon pairs is presented. The analysis is based on samples of proton-proton collision data collected by the CMS experiment at center-of-mass energies of 8 and 13 TeV, corresponding to integrated luminosities of 19.7 and 3.3fb super(?1), respectively. The interpretation of the search results focuses on spin-0 and spin-2 resonances with masses between 0.5 and 4 TeV and with widths, relative to the mass, between 1.4x10 super(?4) and 5.6x10 super(?2). Limits are set on scalar resonances produced through gluon-gluon fusion, and on Randall-Sundrum gravitons. A modest excess of events compatible with a narrow resonance with a mass of about 750 GeV is observed. The local significance of the excess is approximately 3.4 standard deviations. The significance is reduced to 1.6 standard deviations once the effect of searching under multiple signal hypotheses is considered. More data are required to determine the origin of this excess. 出版者： United States: American Physical Society 出版日期： 2016-07-28 出處： Physical review letters, 2016-07, Vol.117 (5), Article 051802 資源來源： American Physical Society Journals 識別號： ISSN: 0031-9007 識別號： EISSN: 1079-7114 識別號： DOI: 10.1103/PhysRevLett.117.051802
显示于类别:	[物理學系] 期刊論文

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