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| 題名: | Measurement of the charge asymmetry in top-quark pair production in proton-proton collisions at √s=7 TeV |
| 作者: | 張元翰;Chatrchyan, S.;Lellouch, J.;Walsh, S.;Grégoire, G.;Beliy, N.;Genchev, V.;Morovic, S.;Mahmoud, M.A.;Kadastik, M.;Lassila-Perini, K.;Tuominiemi, J.;Sillou, D.;Beauceron, S.;Spiridonov, A.;Chwalek, T.;Katkov, I.;Quast, G.;Krajczar, K.;Gomber, B.;Aziz, T.;Mohanty, G.B.;Hesari, H.;Pompili, A.;Abbiendi, G.;Barbagli, G.;Lista, L.;Bisello, D.;Dosselli, U.;Menichelli, M.;Palmonari, F.;Demaria, N.;Kim, J.Y.;Kang, S.;Park, I.C.;Martisiute, D.;Gallinaro, M.;Dermenev, A.;Safronov, G.;Perfilov, M.;Uzunian, A.;Albajar, C.;Gomez, G.;Lopez Virto, A.;DʼEnterria, D.;Hoffmann, H.F.;Lenzi, P.;Malgeri, L.;Spiga, D.;Horisberger, R.;Sibille, J.;Chanon, N.;Lecomte, P.;Moortgat, F.;Treille, D.;Urscheler, C.;Weng, J.;Yalvac, M.;Olaiya, E.;Womersley, W.J.;Iles, G.;Papageorgiou, A.;Tourneur, S.;Virdee, T.;Martin, W.;Heister, A.;Lawson, P.;Luk, M.;Farrell, C.;Long, O.R.;Ranieri, R.;Barge, D.;Stuart, D.;Bunn, J.;Teo, W.D.;Burkett, K.;Muniz, L.;Zakaria, M.;Haas, J.;Prosper, H.;Veeraraghavan, V.;Cavanaugh, R.;Khalatyan, S.;Zhukova, V.;Baur, U.;Brinkerhoff, A.;Kolb, J.;Luo, W.;Laird, E.;Mendez, H.;Laasanen, A.T.;Zablocki, J.;Chung, Y.S.;Garcia-Bellido, A.;Somalwar, S.;Spanier, S.;Osipenkov, I.;Akchurin, N.;Dudero, P.R.;Melo, A.;Sheldon, P. |
| 貢獻者: | 理學院物理學系 |
| 關鍵詞: | CMS;Exact sciences and technology;Nuclear physics;Physics;The physics of elementary particles and fields;Top quark |
| 日期: | 2012-03-13 |
| 上傳時間: | 2026-04-23 12:12:50 (UTC+8) |
| 出版者: | Kidlington: Elsevier B.V |
| 摘要: | 摘要： The difference in angular distributions between top quarks and antiquarks, commonly referred to as the charge asymmetry, is measured in pp collisions at the LHC with the CMS experiment. The data sample corresponds to an integrated luminosity of 1.09 fb−1 at a centre-of-mass energy of 7 TeV. Top-quark pairs are selected in the final state with an electron or muon and four or more jets. At least one jet is identified as originating from b-quark hadronization. The charge asymmetry is measured in two variables, one based on the pseudorapidities (η) of the top quarks and the other on their rapidities (y). The results ACη=−0.017±0.032 (stat.)−0.036+0.025(syst.) and ACy=−0.013±0.028 (stat.)−0.031+0.029(syst.) are consistent within uncertainties with the standard-model predictions.
出版者： Kidlington: Elsevier B.V
出版日期： 2012-03-13
出處： Physics letters. B, 2012-03, Vol.709 (1-2), p.28-49
資源來源： Elsevier ScienceDirect Journals Complete
版權： 2012 CERN
版權： 2015 INIST-CNRS
識別號： ISSN: 0370-2693
識別號： EISSN: 1873-2445
識別號： DOI: 10.1016/j.physletb.2012.01.078
識別號： CODEN: PYLBAJ |
| 顯示於類別: | [物理學系] 期刊論文
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