Search for dark matter particles in proton-proton collisions at √s=8 TeV using the razor variables

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题名:	Search for dark matter particles in proton-proton collisions at √s=8 TeV using the razor variables
作者:	林宗泰;Alderweireldt, S.;Blekman, F.;Tavernier, S.;Brun, H.;Caillol, C.;Clerbaux, B.;Seva, T.;Zenoni, F.;Crucy, S.;Poyraz, D.;Quertenmont, L.;Malbouisson, H.;Mercadante, P. G.;Li, Q.;Florez, C.;Gomez, J. P.;Nicolaou, C.;Finger, M.;Strebler, T.;Coubez, X.;Courbon, B.;Ruiz Alvarez, J. D.;Naumann-Emme, S.;Pantaleo, F.;Poehlsen, J.;Chwalek, T.;Descroix, A.;Lobelle Pardo, P.;Mildner, H.;Williamson, S.;Hidas, P.;Zsigmond, A. J.;Sharan, M.;Chatterjee, R. M.;Fahim, A.;Fiore, L.;Monge, M. R.;Bisello, D.;Dall’Osso, M.;Margoni, M.;Pegoraro, M.;Ciocci, M. A.;Santanastasio, F.;Lee, S. W.;Casimiro Linares, E.;Khan, W. A.;Khurshid, T.;Brona, G.;Walczak, M.;Bargassa, P.;Di Francesco, A.;Murzin, V.;Dremin, I.;Baskakov, A.;Dudko, L.;Alcaraz Maestre, J.;Flix, J.;Gonzalez Caballero, I.;Dorney, B.;Franzoni, G.;Guida, R.;Petrilli, A.;Veres, G. I.;Langenegger, U.;Quittnat, M.;Chang, Y. W.;Hos, I.;Zeyrek, M.;Levchuk, L.;Smith, D.;Nikitenko, A.;Seez, C.;Rohlf, J.;Heintz, U.;Clare, R.;Pieri, M.;Franco Sevilla, M.;Paulini, M.;Gottschalk, E.;Weber, H. A.;Rank, D.;Rodriguez, J. L.;Hofman, D. J.;Dilsiz, K.;Fehling, D.;Baringer, P.;Murray, M.;Zhukova, V.;Rappoccio, S.;Lannon, K.;Hughes, R.;Ji, W.;Marlow, D.;Kumar, A.;Verzetti, M.;Thomas, S.;Huang, T.;Arenton, M. W.;Lanaro, A.;Long, K.
贡献者:	理學院物理學系
关键词:	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:	2016-12-01
上传时间:	2026-04-23 13:03:21 (UTC+8)
出版者:	Berlin/Heidelberg: Springer Berlin Heidelberg
摘要:	摘要： A bstract A search for dark matter particles directly produced in proton-proton collisions recorded by the CMS experiment at the LHC is presented. The data correspond to an integrated luminosity of 18.8 fb −1 , at a center-of-mass energy of 8 TeV. The event selection requires at least two jets and no isolated leptons. The razor variables are used to quantify the transverse momentum balance in the jet momenta. The study is performed separately for events with and without jets originating from b quarks. The observed yields are consistent with the expected backgrounds and, depending on the nature of the production mechanism, dark matter production at the LHC is excluded at 90% confidence level for a mediator mass scale Λ below 1 TeV. The use of razor variables yields results that complement those previously published. 其他題名： J. High Energ. Phys 出版者： Berlin/Heidelberg: Springer Berlin Heidelberg 出版日期： 2016-12-19 出處： The journal of high energy physics, 2016-12, Vol.2016 (12) 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/JHEP12(2016)088
显示于类别:	[物理學系] 期刊論文

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