Measurement of the W boson helicity in events with a single reconstructed top quark in pp collisions at √s = 8 TeV

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/105386

Title:	Measurement of the W boson helicity in events with a single reconstructed top quark in pp collisions at √s = 8 TeV
Authors:	余欣珊;Kiesenhofer, W.;Treberer-Treberspurg, W.;Mohammadi, A.;Perniè, L.;Santaolalla, J.;Avila, C.;Murumaa, M.;Rosowsky, A.;Brochet, S.;El Mamouni, H.;Sabes, D.;Feld, L.;Leonard, J.;Ron, E.;Centis Vignali, M.;Sola, V.;Markou, C.;Horvath, D.;Makovec, A.;Raics, P.;Ahuja, S.;Malhotra, S.;Chatterjee, K.;Gomber, B.;Maity, M.;Rovelli, T.;Tosi, N.;Chiorboli, M.;Fiorendi, S.;Manzoni, R. A.;Lista, L.;Paolucci, P.;Re, V.;Mantovani, G.;Lomtadze, T.;Messineo, A.;Del Re, D.;Diemoz, M.;Gobbo, B.;Marone, M.;Beirão Da Cruz E Silva, C.;Afanasiev, S.;Murzin, V.;Krasnikov, N.;Epshteyn, V.;Andreev, V.;Dudko, L.;Kalinin, A.;Gonzalez Lopez, O.;Missiroli, M.;Calderon, A.;Marco, R.;Piedra Gomez, J.;Benhabib, L.;Botta, C.;Elliott-Peisert, A.;Eugster, J.;Moortgat, F.;Morovic, S.;Pierini, M.;Racz, A.;Steggemann, J.;Bachmair, F.;Mohr, N.;Nägeli, C.;Rossini, M.;Starodumov, A.;Volpe, R.;Levchuk, L.;Yohay, R.;Rakness, G.;Ellison, J.;Hanson, G.;Sharma, V.;Duarte, J.;Abdullin, S.;Bauerdick, L. A. T.;Gottschalk, E.;Mrenna, S.;Adams, T.;Kalakhety, H.;Dilsiz, K.;Rahmat, R.;Bolognesi, S.;Kenny, R. P.;Belloni, A.;Cali, I. A.;Chan, M.;Knowlton, D.;Nash, D.;Orimoto, T.;Bylsma, B.;Zablocki, J.;Padley, B. P.;Contreras-Campana, E.;Roe, J.;Libeiro, T.;Wood, J.;Karchin, P. E.;Perry, T.
Contributors:	理學院物理學系
Keywords:	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
Date:	2015-01-12
Issue Date:	2026-04-23 12:21:54 (UTC+8)
Publisher:	Berlin/Heidelberg: Springer Berlin Heidelberg
Abstract:	摘要： A bstract A measurement of the W boson helicity is presented, where the W boson originates from the decay of a top quark produced in pp collisions. The event selection, optimized for reconstructing a single top quark in the final state, requires exactly one isolated lepton (muon or electron) and exactly two jets, one of which is likely to originate from the hadronization of a bottom quark. The analysis is performed using data recorded at a center-of-mass energy of 8 TeV with the CMS detector at the CERN LHC in 2012. The data sample corresponds to an integrated luminosity of 19.7 fb −1 . The measured helicity fractions are F L = 0 . 298 ± 0 . 028 (stat) ± 0 . 032(syst), F 0 = 0 . 720 ± 0 . 039 (stat) ± 0 . 037(syst), and F R = −0 . 018 ± 0 . 019 (stat) ± 0 . 011(syst). These results are used to set limits on the real part of the tWb anomalous couplings, g L and g R . 其他題名： J. High Energ. Phys 出版者： Berlin/Heidelberg: Springer Berlin Heidelberg 出版日期： 2015-01-12 出處： The journal of high energy physics, 2015-01, Vol.2015 (1) 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/JHEP01(2015)053
Appears in Collections:	[Department of Physics] journal & Dissertation

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