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

CMS Collaboration

doi:10.1016/j.physletb.2013.12.009

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

CMS Collaboration

Research output: Contribution to journal › Article

91 Scopus citations

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, α_S. With the parton distribution function set NNPDF2.3, a pole mass of 176.7_−3.4 ^+3.8 GeV is obtained when constraining α_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 α_S(m_Z)=0.1151_−0.0032 ^+0.0033 is extracted. This is the first determination of α_S using events from top-quark production.

Original language	English (US)
Pages (from-to)	496-517
Number of pages	22
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	728
DOIs	https://doi.org/10.1016/j.physletb.2013.12.009
State	Published - Jan 20 2014

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Keywords

CMS
Constant
Coupling
Cross section
Mass
Pair
Physics
QCD
Quark
Strong
Top

Access to Document

10.1016/j.physletb.2013.12.009

Fingerprint Dive into the research topics of 'Determination of the top-quark pole mass and strong coupling constant from the tt¯ production cross section in pp collisions at s=7 TeV'. Together they form a unique fingerprint.

Cite this

CMS Collaboration (2014). Determination of the top-quark pole mass and strong coupling constant from the tt¯ production cross section in pp collisions at s=7 TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 728, 496-517. https://doi.org/10.1016/j.physletb.2013.12.009

@article{93c6b5e8a9e140208bda27dc8bb2c11b,

title = "Determination of the top-quark pole mass and strong coupling constant from the tt¯ production cross section in pp collisions at s=7 TeV",

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, mt pole, 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 mt pole 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.",

keywords = "CMS, Constant, Coupling, Cross section, Mass, Pair, Physics, QCD, Quark, Strong, Top",

author = "{CMS Collaboration} and S. Chatrchyan and V. Khachatryan and Sirunyan, {A. M.} and A. Tumasyan and W. Adam and T. Bergauer and M. Dragicevic and J. Er{\"o} and C. Fabjan and M. Friedl and R. Fr{\"u}hwirth and Ghete, {V. M.} and N. H{\"o}rmann and J. Hrubec and M. Jeitler and W. Kiesenhofer and V. Kn{\"u}nz and M. Krammer and I. Kr{\"a}tschmer and D. Liko and I. Mikulec and D. Rabady and B. Rahbaran and C. Rohringer and H. Rohringer and R. Sch{\"o}fbeck and J. Strauss and A. Taurok and W. Treberer-Treberspurg and W. Waltenberger and Wulz, {C. E.} and V. Mossolov and N. Shumeiko and {Suarez Gonzalez}, J. and S. Alderweireldt and M. Bansal and S. Bansal and T. Cornelis and {De Wolf}, {E. A.} and X. Janssen and A. Knutsson and S. Luyckx and L. Mucibello and S. Ochesanu and B. Roland and R. Rougny and Z. Staykova and Marlow, {Daniel Robert} and Olsen, {James D.} and Tully, {Christopher George}",

year = "2014",

month = jan,

day = "20",

doi = "10.1016/j.physletb.2013.12.009",

language = "English (US)",

volume = "728",

pages = "496--517",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

}

TY - JOUR

T1 - Determination of the top-quark pole mass and strong coupling constant from the tt¯ production cross section in pp collisions at s=7 TeV

AU - CMS Collaboration

AU - Chatrchyan, S.

AU - Khachatryan, V.

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Bergauer, T.

AU - Dragicevic, M.

AU - Erö, J.

AU - Fabjan, C.

AU - Friedl, M.

AU - Frühwirth, R.

AU - Ghete, V. M.

AU - Hörmann, N.

AU - Hrubec, J.

AU - Jeitler, M.

AU - Kiesenhofer, W.

AU - Knünz, V.

AU - Krammer, M.

AU - Krätschmer, I.

AU - Liko, D.

AU - Mikulec, I.

AU - Rabady, D.

AU - Rahbaran, B.

AU - Rohringer, C.

AU - Rohringer, H.

AU - Schöfbeck, R.

AU - Strauss, J.

AU - Taurok, A.

AU - Treberer-Treberspurg, W.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Mossolov, V.

AU - Shumeiko, N.

AU - Suarez Gonzalez, J.

AU - Alderweireldt, S.

AU - Bansal, M.

AU - Bansal, S.

AU - Cornelis, T.

AU - De Wolf, E. A.

AU - Janssen, X.

AU - Knutsson, A.

AU - Luyckx, S.

AU - Mucibello, L.

AU - Ochesanu, S.

AU - Roland, B.

AU - Rougny, R.

AU - Staykova, Z.

AU - Marlow, Daniel Robert

AU - Olsen, James D.

AU - Tully, Christopher George

PY - 2014/1/20

Y1 - 2014/1/20

N2 - 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, mt pole, 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 mt pole 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.

AB - 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, mt pole, 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 mt pole 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.

KW - CMS

KW - Constant

KW - Coupling

KW - Cross section

KW - Mass

KW - Pair

KW - Physics

KW - QCD

KW - Quark

KW - Strong

KW - Top

UR - http://www.scopus.com/inward/record.url?scp=85034960879&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85034960879&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2013.12.009

DO - 10.1016/j.physletb.2013.12.009

M3 - Article

AN - SCOPUS:85034960879

VL - 728

SP - 496

EP - 517

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

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

SN - 0370-2693

ER -