Search for the production of dark matter in association with top-quark pairs in the single-lepton final state in proton-proton collisions at √S= 8TeV

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题名:	Search for the production of dark matter in association with top-quark pairs in the single-lepton final state in proton-proton collisions at √S= 8TeV
作者:	林宗泰;Kiesenhofer, W.;Treberer-Treberspurg, W.;Poyraz, D.;Carvalho, W.;Godinovic, N.;Finger, M.;Assran, Y.;Peltola, T.;Andrea, J.;Klein, K.;Meyer, A.;Teyssier, D.;Stahl, A.;Garay Garcia, J.;Lipka, K.;Schoerner-Sadenius, T.;Garutti, E.;Giffels, M.;Lobelle Pardo, P.;Rabbertz, K.;Markou, C.;Bhattacharya, S.;Jain, Sa;Banerjee, S.;Wickramage, N.;Grandi, C.;Siroli, G. P.;Travaglini, R.;Piccolo, D.;Ferretti, R.;Lo Vetere, M.;Carlin, R.;Ronchese, P.;Tosi, M.;Mantovani, G.;Soffi, L.;Obertino, M. M.;Roh, Y.;Yoo, H. D.;Hoorani, H. R.;Nguyen, F.;Rodrigues Antunes, J.;Kamenev, A.;Konoplyanikov, V.;Dermenev, A.;Leonidov, A.;Mesyats, G.;Savrin, V.;Tourtchanovitch, L.;Domínguez Vázquez, D.;Munoz Sanchez, F. J.;Girone, M.;Masetti, L.;Sakulin, H.;Kotlinski, D.;Buchmann, M. A.;Dissertori, G.;Yalvac, M.;Kaya, O.;Meng, Z.;Jarvis, M.;Nash, J.;St. John, J.;Laird, E.;Mao, Z.;Chertok, M.;Smith, J.;Squires, M.;Nauenberg, U.;Thompson, J.;Green, D.;Harris, R. M.;Lykken, J.;Hugon, J.;Korytov, A.;Shchutska, L.;Sperka, D.;Askew, A.;Sandoval Gonzalez, I. D.;Merlo, J.-P.;Sen, S.;Martin, C.;Chakaberia, I.;Gude, A.;Meier, F.;Baumgartel, D.;Nash, D.;Orimoto, T.;Hahn, K. A.;Sung, K.;Brinkerhoff, A.;Hildreth, M.;Smith, G.;Werner, J. S.;Malik, S.;Chou, J. P.;Krutelyov, V.;Montalvo, R.;Tatarinov, A.;Sturdy, J.
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:	2015-06-02
上传时间:	2026-04-23 14:07:23 (UTC+8)
出版者:	Berlin/Heidelberg: Springer Berlin Heidelberg
摘要:	摘要： A bstract A search is presented for particle dark matter produced in association with a pair of top quarks in pp collisions at a centre-of-mass energy of s = 8 TeV. The data were collected with the CMS detector at the LHC and correspond to an integrated luminosity of 19.7 fb −1 . This search requires the presence of one lepton, multiple jets, and large missing transverse energy. No excess of events is found above the SM expectation, and upper limits are derived on the production cross section. Interpreting the findings in the context of a scalar contact interaction between fermionic dark matter particles and top quarks, lower limits on the interaction scale are set. These limits are also interpreted in terms of the dark matter-nucleon scattering cross sections for the spin-independent scalar operator and they complement direct searches for dark matter particles in the low mass region. 其他題名： J. High Energ. Phys 出版者： Berlin/Heidelberg: Springer Berlin Heidelberg 出版日期： 2015-06-17 出處： The journal of high energy physics, 2015-06, Vol.2015 (6) 資源來源： Publicly Available Content Database 版權： The Author(s) 2015 識別號： EISSN: 1029-8479 識別號： DOI: 10.1007/JHEP06(2015)121
显示于类别:	[物理學系] 期刊論文

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