Department of Physics & Astronomy

Permanent URI for this community

https://ir.ua.edu/handle/123456789/71

Browse

Browsing Department of Physics & Astronomy by Subject "(MS)OVER-BAR MASSES"

Now showing 1 - 1 of 1
  • Thumbnail Image
    Item
    Determination of the top-quark pole mass and strong coupling constant from the t(t)over-bar production cross section in pp collisions at root s=7 TeV
    (Elsevier, 2014) CMS Collaboration; Charaf, O.; Cooper, S.I.; Henderson, C.; Rumerio, P.; Yerevan Physics Institute; Belarusian State University; National Center of Particles & High Energy Physics - Belarus; University of Antwerp; Vrije Universiteit Brussel; Universite Libre de Bruxelles; Ghent University; Universite Catholique Louvain; University of Mons; Centro Brasileiro de Pesquisas Fisicas; Universidade do Estado do Rio de Janeiro; Universidade Estadual Paulista; Universidade Federal do ABC (UFABC); Bulgarian Academy of Sciences; University of Sofia; Chinese Academy of Sciences; Institute of High Energy Physics, CAS; Peking University; Universidad de los Andes (Colombia); University of Split; Rudjer Boskovic Institute; University of Cyprus; Charles University Prague; Egyptian Academy of Scientific Research & Technology (ASRT); Egyptian Knowledge Bank (EKB); Egyptian Network of High Energy Physics (ENHEP); National Institute of Chemical Physics & Biophysics (NICPB); University of Helsinki; Helsinki Institute of Physics; Lappeenranta University of Technology; CEA; UDICE-French Research Universities; Universite Paris Saclay; Centre National de la Recherche Scientifique (CNRS); CNRS - National Institute of Nuclear and Particle Physics (IN2P3); Institut Polytechnique de Paris; Universites de Strasbourg Etablissements Associes; Universite de Strasbourg; Universite de Haute-Alsace (UHA); Universite Claude Bernard Lyon 1; Ivane Javakhishvili Tbilisi State University; RWTH Aachen University; Helmholtz Association; Deutsches Elektronen-Synchrotron (DESY); University of Hamburg; Karlsruhe Institute of Technology; National Centre of Scientific Research "Demokritos"; National & Kapodistrian University of Athens; University of Ioannina; Eotvos Lorand Research Network; Hungarian Academy of Sciences; Hungarian Wigner Research Centre for Physics; Hungarian Institute for Nuclear Research; University of Debrecen; National Institute of Science Education & Research (NISER); Panjab University; University of Delhi; Saha Institute of Nuclear Physics; Bhabha Atomic Research Center (BARC); Tata Institute of Fundamental Research (TIFR); University College Dublin; Istituto Nazionale di Fisica Nucleare (INFN); Universita degli Studi di Bari Aldo Moro; Politecnico di Bari; University of Bologna; University of Catania; University of Florence; University of Genoa; University of Milano-Bicocca; University of Naples Federico II; University of Basilicata; Guglielmo Marconi University; University of Padua; University of Trento; University of Pavia; University of Perugia; University of Pisa; Scuola Normale Superiore di Pisa; Sapienza University Rome; University of Turin; University of Eastern Piedmont Amedeo Avogadro; University of Trieste; Kangwon National University; Kyungpook National University; Chonnam National University; Korea University; University of Seoul; Sungkyunkwan University (SKKU); Vilnius University; CINVESTAV - Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional; Universidad Iberoamericana Ciudad de Mexico; Benemerita Universidad Autonoma de Puebla; Universidad Autonoma de San Luis Potosi; University of Auckland; University of Canterbury; National Centre for Physics - Pakistan; Quaid I Azam University; National Centre for Nuclear Research; University of Warsaw; Laboratorio de Instrumentacao e Fisica Experimental de Particulas; Joint Institute for Nuclear Research - Russia; National Research Centre - Kurchatov Institute; Petersburg Nuclear Physics Institute; Russian Academy of Sciences; Institute for Nuclear Research of the Russian Academy of Sciences; Alikhanov Institute for Theoretical & Experimental Physics; Russian Academy of Science Lebedev Physical Institute; Lomonosov Moscow State University; Institute of High Energy Physics - IHEP; University of Belgrade; Centro de Investigaciones Energeticas, Medioambientales Tecnologicas; Autonomous University of Madrid; University of Oviedo; Consejo Superior de Investigaciones Cientificas (CSIC); Universidad de Cantabria; CSIC - Instituto de Fisica de Cantabria (IFCA); European Organization for Nuclear Research (CERN); Swiss Federal Institutes of Technology Domain; Paul Scherrer Institute; ETH Zurich; University of Zurich; National Central University; National Taiwan University; Chulalongkorn University; Cukurova University; Middle East Technical University; Bogazici University; Istanbul Technical University; Kharkov Institute of Physics & Technology; University of Bristol; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC); STFC Rutherford Appleton Laboratory; Imperial College London; Brunel University; Baylor University; University of Alabama Tuscaloosa; Boston University; Brown University; University of California System; University of California Davis; University of California Los Angeles; University of California Riverside; University of California San Diego; University of California Santa Barbara; California Institute of Technology; Carnegie Mellon University; University of Colorado System; University of Colorado Boulder; Cornell University; Fairfield University; United States Department of Energy (DOE); University of Chicago; Fermi National Accelerator Laboratory; State University System of Florida; University of Florida; Florida International University; Florida State University; Florida Institute of Technology; University of Illinois System; University of Illinois Chicago; University of Iowa; Johns Hopkins University; University of Kansas; Kansas State University; Lawrence Livermore National Laboratory; University System of Maryland; University of Maryland College Park; Massachusetts Institute of Technology (MIT); University of Minnesota System; University of Minnesota Twin Cities; University of Mississippi; University of Nebraska System; University of Nebraska Lincoln; State University of New York (SUNY) System; State University of New York (SUNY) Buffalo; Northeastern University; Northwestern University; University of Notre Dame; University System of Ohio; Ohio State University; Princeton University; University of Puerto Rico; University of Puerto Rico Mayaguez; Purdue University System; Purdue University; Purdue University West Lafayette Campus; Rice University; University of Rochester; Rockefeller University; Rutgers State University New Brunswick; University of Tennessee System; University of Tennessee Knoxville; Texas A&M University System; Texas A&M University College Station; Texas Tech University System; Texas Tech University; Vanderbilt University; University of Virginia; Wayne State University; University of Wisconsin System; University of Wisconsin Madison; Technische Universitat Wien; Universidade Estadual de Campinas; Zewail City of Science & Technology; Suez Canal University; Cairo University; Fayoum University; British University in Egypt; Brandenburg University of Technology Cottbus; Eotvos Lorand University; Visva Bharati University; University Ruhuna; Isfahan University of Technology; Sharif University of Technology; Islamic Azad University; University of Siena; Universidad Michoacana de San Nicolas de Hidalgo; University of Bern; Gaziosmanpasa University; Adiyaman University; Cag University - Turkey; Mersin University; Izmir Institute of Technology; Ozyegin University; Kafkas University; Suleyman Demirel University; Ege University; Mimar Sinan Guzel Sanatlar University; Kahramanmaras Sutcu Imam University; University of Southampton; Utah System of Higher Education; Utah Valley University; Argonne National Laboratory; Erzincan Binali Yildirim University; Yildiz Technical University; Qatar Foundation (QF); Texas A&M University Qatar
    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, \(\alpha_S\). With the parton distribution function set NNPDF2.3, a pole mass of \(176.7_{-3.4}{+3.8}\) GeV is obtained when constraining \(\alpha_S\) at the scale of the Z boson mass, mZ, to the current world average. Alternatively, by constraining \(m_t^{pole}\) to the latest average from direct mass measurements, a value of \(\alpha_S(m_z) = 0.1151_{-0.0032}^{+0.0033}\) is extracted. This is the first determination of \(\alpha_S\) using events from top-quark production.