Determination of the top-quark pole mass and strong coupling constant from the tt production cross section in pp collisions at s = 7 TeV Academic Article uri icon

abstract

  • 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, m t pole , or the strong coupling constant, S . With the parton distribution function set NNPDF2.3, a pole mass of 176. 7 +3.8 -3.4 GeV is obtained when constraining S at the scale of the Z boson mass, m Z , to the current world average. Alternatively, by constraining m t pole to the latest average from direct mass measurements, a value of S (m Z ) = 0. 1151 +0.0033 -0.0032 is extracted. This is the first determination of S using events from top-quark production. 2013 The Authors. Published by Elsevier B.V.

published proceedings

  • Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

altmetric score

  • 3.25

author list (cited authors)

  • Chatrchyan, S., Khachatryan, V., Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., ... Sigamani, M.

citation count

  • 59

complete list of authors

  • Chatrchyan, S||Khachatryan, V||Sirunyan, AM||Tumasyan, A||Adam, W||Bergauer, T||Dragicevic, M||Erö, J||Fabjan, C||Friedl, M||Frühwirth, R||Ghete, VM||Hörmann, N||Hrubec, J||Jeitler, M||Kiesenhofer, W||Knünz, V||Krammer, M||Krätschmer, I||Liko, D||Mikulec, I||Rabady, D||Rahbaran, B||Rohringer, H||Schöfbeck, R||Strauss, J||Taurok, A||Treberer-Treberspurg, W||Waltenberger, W||Wulz, CE||Mossolov, V||Shumeiko, N||Suarez Gonzalez, J||Alderweireldt, S||Bansal, M||Bansal, S||Cornelis, T||De Wolf, EA||Janssen, X||Knutsson, A||Luyckx, S||Mucibello, L||Ochesanu, S||Roland, B||Rougny, R||Staykova, Z||Van Haevermaet, H||Van Mechelen, P||Van Remortel, N||Van Spilbeeck, A||Blekman, F||Blyweert, S||D'Hondt, J||Heracleous, N||Kalogeropoulos, A||Keaveney, J||Lowette, S||Maes, M||Olbrechts, A||Tavernier, S||Van Doninck, W||Van Mulders, P||Van Onsem, GP||Villella, I||Caillol, C||Clerbaux, B||De Lentdecker, G||Favart, L||Gay, APR||Hreus, T||Léonard, A||Marage, PE||Mohammadi, A||Perniè, L||Reis, T||Seva, T||Thomas, L||Vander Velde, C||Vanlaer, P||Wang, J||Adler, V||Beernaert, K||Benucci, L||Cimmino, A||Costantini, S||Dildick, S||Garcia, G||Klein, B||Lellouch, J||Marinov, A||Mccartin, J||Ocampo Rios, AA||Ryckbosch, D||Sigamani, M

publication date

  • January 2014