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| 題名: | Determination of the top-quark pole mass and strong coupling constant from the tt� production cross section in pp collisions at s=7 TeV |
| 作者: | 余欣珊;Chatrchyan, S.;Waltenberger, W.;Roland, B.;Van Onsem, G.P.;Clerbaux, B.;Gay, A.P.R.;Castello, R.;Lemaitre, V.;Liang, D.;Wang, X.;Ellithi Kamel, A.;Nayak, A.;Charlot, C.;Dahms, T.;Agram, J.-L.;Autermann, C.;Edelhoff, M.;Caudron, J.;Hebbeker, T.;Hauk, J.;Kirschenmann, H.;Dierlamm, A.;Hartmann, F.;Vesztergombi, G.;Beni, N.;Molnar, J.;Karancsi, J.;Nishu, N.;Gomber, B.;Creanza, D.;Codispoti, G.;Travaglini, R.;Ciulli, V.;Biasotto, M.;Romeo, F.;Argiro, S.;Biino, C.;Mariotti, C.;La Licata, C.;Lopez-Fernandez, R.;Carrillo Moreno, S.;Moisenz, P.;Sulimov, V.;Erofeeva, M.;Lokhtin, I.;Delgado Peris, A.;Goy Lopez, S.;Willmott, C.;Fernandez, M.;Jorda, C.;Ruiz-Jimeno, A.;Dabrowski, A.;Lecoq, P.;Moser, R.;Nesvold, E.;Schäfer, C.;Spiga, D.;Bäni, L.;Lecomte, P.;Martinez Ruiz del Arbol, P.;Takahashi, M.;Bahtiyar, H.;Cockerill, D.J.A.;Coughlan, J.A.;Karapostoli, G.;Lucas, R.;Leggat, D.;Alimena, J.;Narain, M.;Smith, J.;Gary, J.W.;Wilken, R.;Pieri, M.;Sudano, E.;Teo, W.D.;Tucker, J.;Spalding, W.J.;Furic, I.K.;Martinez, G.;Hagopian, S.;Evdokimov, O.;Eno, S.C.;Gomez, J.A.;Goncharov, M.;Stöckli, F.;Pozdnyakov, A.;Berry, D.;Rodenburg, M.;Berry, E.;Jindal, P.;Lopes Pegna, D.;Roberts, J.;Gray, R.;Gilmore, J.;Tatarinov, A.;Melo, A.;Velkovska, J.;Francis, B.;Kottachchi Kankanamge Don, C.;Friis, E. |
| 貢獻者: | 理學院物理學系 |
| 關鍵詞: | CMS;Collisions;Constant;Constraining;Coupling;Cross section;Cross sections (physics);Distribution functions;Elementary particles;Joining;Mass;Pair;Partons;Physics;Poles;QCD;Quark;Strong;Top |
| 日期: | 2014-01-20 |
| 上傳時間: | 2026-04-23 11:51:11 (UTC+8) |
| 出版者: | Elsevier B.V |
| 摘要: | 摘要： The inclusive cross section for top-quark pair production measured by the CMS experiment in proton–proton collisions at a center-of-mass energy of 7 TeV is compared to the QCD prediction at next-to-next-to-leading order with various parton distribution functions to determine the top-quark pole mass, mtpole, or the strong coupling constant, αS. With the parton distribution function set NNPDF2.3, a pole mass of 176.7−3.4+3.8 GeV is obtained when constraining αS at the scale of the Z boson mass, mZ, to the current world average. Alternatively, by constraining mtpole to the latest average from direct mass measurements, a value of αS(mZ)=0.1151−0.0032+0.0033 is extracted. This is the first determination of αS using events from top-quark production.
出版者： Elsevier B.V
出版日期： 2014
出處： Physics letters. B, 2014, Vol.728, p.496-517
資源來源： Elsevier ScienceDirect Journals Complete
版權： 2013 The Authors
識別號： ISSN: 0370-2693
識別號： EISSN: 1873-2445
識別號： DOI: 10.1016/j.physletb.2013.12.009 |
| 顯示於類別: | [物理學系] 期刊論文
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