Search for supersymmetry in hadronic final states with missing transverse energy using the variables αT and b-quark multiplicity in pp collisions at √s = 8 TeV

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题名:	Search for supersymmetry in hadronic final states with missing transverse energy using the variables αT and b-quark multiplicity in pp collisions at √s = 8 TeV
作者:	林宗泰;Chatrchyan, S;Tumasyan, A;Frühwirth, R;Liko, D;Villella, I;Sigamani, M;Giammanco, A;De Jesus Damiao, D;Kozhuharov, V;Liu, S;Lehti, S;Tuovinen, E;Besancon, M;Givernaud, A;Bianchini, L;Paganini, P;Sirois, Y;Bodin, D;Goetzmann, C;Gouzevitch, M;Lethuillier, M;Sordini, V;Hebbeker, T;Bartosik, N;Lange, W;Raspereza, A;Seidel, M;De Boer, W;Simonis, H J;Zeise, M;Kesisoglou, S;Bhatnagar, V;Mehta, M Z;Kailas, S;Mazumdar, K;Etesami, S M;Khakzad, M;Creanza, D;Fasanella, D;Chiorboli, M;Tropiano, A;Dogangun, O;Kim, J E;Butler, P H;Reucroft, S;Khan, W A;Gallinaro, M;Golovtsov, V;Oreshkin, V;Vorobyev, An;Gninenko, S;Markina, A;Alcaraz Maestre, J;Domínguez Vázquez, D;Gonzalez Lopez, O;Breuker, H;Coarasa Perez, J A;Reece, W;Simon, M;Bachmair, F;Tupputi, S;Cerci, S;Ozkorucuklu, S;Barlas, E;Flacher, H;Cripps, N;Fulcher, J;Sharp, P;Leggat, D;Scarborough, T;Rumerio, P;Christopher, G;Kukartsev, G;Nguyen, H;Yoo, J;Krutelyov, V;Pavlunin, V;Duarte, J;Yang, Y;Vogel, H;Gibbons, L K;Winn, D;Bhat, P C;Musienko, Y;De Gruttola, M;Kypreos, T;Yumiceva, F;Silkworth, C;Dutta, V;Ma, T;Ralph, D;Singovsky, A;Haley, J;Orimoto, T;Velasco, M;Hildreth, M;Benedetti, D;Maroussov, V;Han, J;Tuo, S
贡献者:	理學院物理學系
日期:	2013-01-01
上传时间:	2026-04-23 13:58:51 (UTC+8)
出版者:	Springer New York
摘要:	摘要： An inclusive search for supersymmetric processes that produce final states with jets and missing transverse energy is performed in pp collisions at a centre-of-mass energy of 8 TeV. The data sample corresponds to an integrated luminosity of 11.7 fb-1 collected by the CMS experiment at the LHC. In this search, a dimensionless kinematic variable, αT, is used to discriminate between events with genuine and misreconstructed missing transverse energy. The search is based on an examination of the number of reconstructed jets per event, the scalar sum of transverse energies of these jets, and the number of these jets identified as originating from bottom quarks. No significant excess of events over the standard model expectation is found. Exclusion limits are set in the parameter space of simplified models, with a special emphasis on both compressed-spectrum scenarios and direct or gluino-induced production of third-generation squarks. For the case of gluino-mediated squark production, gluino masses up to 950-1125 GeV are excluded depending on the assumed model. For the direct pair-production of squarks, masses up to 450 GeV are excluded for a single light first- or second-generation squark, increasing to 600 GeV for bottom squarks.An inclusive search for supersymmetric processes that produce final states with jets and missing transverse energy is performed in pp collisions at a centre-of-mass energy of 8 TeV. The data sample corresponds to an integrated luminosity of 11.7 fb-1 collected by the CMS experiment at the LHC. In this search, a dimensionless kinematic variable, αT, is used to discriminate between events with genuine and misreconstructed missing transverse energy. The search is based on an examination of the number of reconstructed jets per event, the scalar sum of transverse energies of these jets, and the number of these jets identified as originating from bottom quarks. No significant excess of events over the standard model expectation is found. Exclusion limits are set in the parameter space of simplified models, with a special emphasis on both compressed-spectrum scenarios and direct or gluino-induced production of third-generation squarks. For the case of gluino-mediated squark production, gluino masses up to 950-1125 GeV are excluded depending on the assumed model. For the direct pair-production of squarks, masses up to 450 GeV are excluded for a single light first- or second-generation squark, increasing to 600 GeV for bottom squarks. 出版日期： 2013-01-01 出處： The European physical journal. C, Particles and fields, 2013-01, Vol.73 (9), p.2568 資源來源： Academic Search Premier (via EbscoHost) 識別號： ISSN: 1434-6044 識別號： DOI: 10.1140/epjc/s10052-013-2568-6
显示于类别:	[物理學系] 期刊論文

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