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Title: Determination of the top-quark pole mass and strong coupling constant from the t t-bar production cross section in pp collisions at $$\sqrt{s}$$ = 7 TeV

Journal Article · · Physics Letters B

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$$^{+3.0}_{-2.8}$$ GeV is obtained when constraining $$\alpha_S$$ 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 $$\alpha_S(m_Z)$$ = 0.1151$$^{+0.0028}_{-0.0027}$$ is extracted. This is the first determination of $$\alpha_S$$ using events from top-quark production.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
CMS Collaboration
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1128062
Report Number(s):
FERMILAB-PUB-13-341-CMS; CERN-PH-EP-2013-121; CMS-TOP-12-022; arXiv eprint number arXiv:1307.1907; TRN: US1600979
Journal Information:
Physics Letters B, Vol. 728; Related Information: For Corrigendum, see http://dx.doi.org/10.1016/j.physletb.2014.08.040; ISSN 0370-2693
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 95 works
Citation information provided by
Web of Science

References (44)

Measurement of the $\mathrm{{t\bar{t}}}$ production cross section in pp collisions at $\sqrt{s}=7$ TeV using the kinematic properties of events with leptons and jets journal September 2011
Measurement of the t t ¯ production cross section in p p collisions at 7 TeV in lepton + jets events using b -quark jet identification journal November 2011
Measurement of the t t ¯ production cross section in pp collisions at s = 7 TeV in dilepton final states containing a τ journal June 2012
Measurement of the <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi mathvariant="normal">t</mml:mi><mml:mover accent="true"><mml:mi mathvariant="normal">t</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math> production cross section in pp collisions at <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>7</mml:mn><mml:mtext> </mml:mtext><mml:mtext>TeV</mml:mtext></mml:math> with lepton+jets final states journal March 2013
Measurement of the $\mathrm{t}\bar{\mathrm{t}}$ production cross section in the τ+jets channel in pp collisions at $\sqrt{s}=7\ \mbox{TeV}$ journal April 2013
Measurement of differential top-quark-pair production cross sections in pp collisions at $\sqrt{s} = 7\ \mathrm{TeV}$ journal March 2013
Total Top-Quark Pair-Production Cross Section at Hadron Colliders Through O ( α S 4 ) journal June 2013
Higgs mass and vacuum stability in the Standard Model at NNLO journal August 2012
The top quark and Higgs boson masses and the stability of the electroweak vacuum journal September 2012
Measurement of the top-quark mass in $\mathrm{t}\overline{\mathrm{t}}$ events with dilepton final states in pp collisions at $\sqrt{s}=7\ \mbox{TeV}$ journal October 2012
Measurement of masses in the $\mathrm{t}\overline{\mathrm{t}}$ system by kinematic endpoints in pp collisions at $\sqrt{s}=7\ \mathrm{TeV}$ journal July 2013
Top Mass Measurements from Jets and the Tevatron Top-Quark Mass journal December 2008
Precision predictions for the <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>t</mml:mi><mml:mover accent="true"><mml:mi>t</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math> production cross section at hadron colliders journal September 2011
General-purpose event generators for LHC physics journal July 2011
Measuring the running top-quark mass journal September 2009
Determination of the pole and <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mover accent="true"><mml:mi mathvariant="normal">MS</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math> masses of the top quark from the <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>t</mml:mi><mml:mover accent="true"><mml:mi>t</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math> cross section journal September 2011
Hadronic top-quark pair production with NNLL threshold resummation journal February 2012
On the difference between the pole and the MS¯ masses of the top quark at the electroweak scale journal May 2013
Review of Particle Physics journal July 2012
Determination of the strong coupling constant using matched NNLO+NLLA predictions for hadronic event shapes in e + e annihilations journal August 2009
Determination of α S using OPAL hadronic event shapes at $\sqrt{s} = 91\mbox{--}209~\mathrm{GeV}$ and resummed NNLO calculations journal September 2011
Precise Determination of the Strong Coupling Constant at NNLO in QCD from the Three-Jet Rate in Electron–Positron Annihilation at LEP journal February 2010
Thrust at N 3 LL with power corrections and a precision global fit for α s ( m Z ) journal April 2011
Measurement of angular correlations of jets at <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>1.96</mml:mn><mml:mtext> TeV</mml:mtext></mml:math> and determination of the strong coupling at high momentum transfers journal November 2012
Evaluation of the strong coupling constant α S using the ATLAS inclusive jet cross-section data journal June 2012
Percent-Level-Precision Physics at the Tevatron: Next-to-Next-to-Leading Order QCD Corrections to q q ¯ t t ¯ + X journal September 2012
NNLO corrections to top-pair production at hadron colliders: the all-fermionic scattering channels journal December 2012
NNLO corrections to top pair production at hadron colliders: the quark-gluon reaction journal January 2013
Soft radiation in heavy-particle pair production: All-order colour structure and two-loop anomalous dimension journal March 2010
Threshold resummation for top-pair hadroproduction to next-to-next-to-leading log journal October 2009
Updated predictions for the total production cross sections of top and of heavier quark pairs at the Tevatron and at the LHC journal September 2008
Parton distributions for the LHC journal July 2009
Uncertainties on α S in global PDF analyses and implications for predicted hadronic cross sections journal October 2009
Parton distributions with LHC data journal February 2013
Precision NNLO determination of <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msub><mml:mi>α</mml:mi><mml:mi>s</mml:mi></mml:msub><mml:mo stretchy="false">(</mml:mo><mml:msub><mml:mi>M</mml:mi><mml:mi>Z</mml:mi></mml:msub><mml:mo stretchy="false">)</mml:mo></mml:math> using an unbiased global parton set journal January 2012
Parton distributions and the strong coupling: CTEQ6AB PDFs journal February 2006
A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX journal June 2010
A positive-weight next-to-leading-order Monte Carlo for heavy flavour hadroproduction journal September 2007
PYTHIA 6.4 physics and manual journal May 2006
Impact of a Higgs Boson at a Mass of 126 GeV on the Standard Model with Three and Four Fermion Generations journal December 2012
The electroweak fit of the standard model after the discovery of a new boson at the LHC journal November 2012
Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC journal September 2012
Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC journal September 2012
A determination of parton distributions with faithful uncertainty estimation journal March 2009

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