Abstract
We discuss various aspects of inclusive top-quark pair production based on Topixs, a new, flexible program that computes the production cross section at the Tevatron and LHC at next-to-next-to-leading logarithmic accuracy in soft and Coulomb resummation, including bound-state effects and the complete next-to-next-to-leading order result in the \( q\overline q \) channel, which has recently become available. We present the calculation of the top-pair cross section in pp collisions at 8 TeV centre-of-mass energy, as well as the cross sections for hypothetical heavy quarks in extensions of the standard model. The dependence on the parton distribution input is studied. Further we investigate the impact of LHC top cross section measurements at \( \sqrt {s} = {7} \) TeV on global fits of the gluon distribution using the NNPDF re-weighting method.
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References
M. Beneke, P. Falgari, S. Klein and C. Schwinn, Hadronic top-quark pair production with NNLL threshold resummation, Nucl. Phys. B 855 (2012) 695 [arXiv:1109.1536] [INSPIRE].
M. Beneke, M. Czakon, P. Falgari, A. Mitov and C. Schwinn, Threshold expansion of the \( gg\left( {q\overline q } \right) \to Q\overline Q + X \) cross section at \( O\left( {\alpha_s^4} \right) \), Phys. Lett. B 690 (2010) 483 [arXiv:0911.5166] [INSPIRE].
M. Aliev et al., HATHOR: HAdronic Top and Heavy quarks crOss section calculatoR, Comput. Phys. Commun. 182 (2011) 1034 [arXiv:1007.1327] [INSPIRE].
M. Cacciari, M. Czakon, M.L. Mangano, A. Mitov and P. Nason, Top-pair production at hadron colliders with next-to-next-to-leading logarithmic soft-gluon resummation, Phys. Lett. B 710 (2012) 612 [arXiv:1111.5869] [INSPIRE].
M. Czakon and A. Mitov, Top++: a program for the calculation of the top-pair cross-section at hadron colliders, arXiv:1112.5675 [INSPIRE].
V. Ahrens, A. Ferroglia, M. Neubert, B.D. Pecjak and L.L. Yang, Precision predictions for the t + \( \overline t \) production cross section at hadron colliders, Phys. Lett. B 703 (2011) 135 [arXiv:1105.5824] [INSPIRE].
N. Kidonakis, Next-to-next-to-leading soft-gluon corrections for the top quark cross section and transverse momentum distribution, Phys. Rev. D 82 (2010) 114030 [arXiv:1009.4935] [INSPIRE].
S.J. Brodsky and X.-G. Wu, Application of the principle of maximum conformality to top-pair production, Phys. Rev. D 86 (2012) 014021 [arXiv:1204.1405] [INSPIRE].
P. Bärnreuther, M. Czakon and A. Mitov, Percent level precision physics at the Tevatron: first genuine NNLO QCD corrections to \( q\overline q \to t\overline t + X \), arXiv:1204.5201 [INSPIRE].
A. Martin, W. Stirling, R. Thorne and G. Watt, Parton distributions for the LHC, Eur. Phys. J. C 63 (2009) 189 [arXiv:0901.0002] [INSPIRE].
S. Alekhin, J. Blümlein and S. Moch, Parton distribution functions and benchmark cross sections at NNLO, arXiv:1202.2281 [INSPIRE].
P.M. Nadolsky et al., Implications of CTEQ global analysis for collider observables, Phys. Rev. D 78 (2008) 013004 [arXiv:0802.0007] [INSPIRE].
G. Watt, Parton distribution function dependence of benchmark standard model total cross sections at the 7 TeV LHC, JHEP 09 (2011) 069 [arXiv:1106.5788] [INSPIRE].
NNPDF collaboration, R.D. Ball et al., Reweighting NNPDFs: the W lepton asymmetry, Nucl. Phys. B 849 (2011) 112 [Erratum ibid. B 854 (2012) 926-927] [arXiv:1012.0836] [INSPIRE].
R.D. Ball et al., Reweighting and unweighting of parton distributions and the LHC W lepton asymmetry data, Nucl. Phys. B 855 (2012) 608 [arXiv:1108.1758] [INSPIRE].
M. Beneke, P. Falgari and C. Schwinn, Soft radiation in heavy-particle pair production: all-order colour structure and two-loop anomalous dimension, Nucl. Phys. B 828 (2010) 69 [arXiv:0907.1443] [INSPIRE].
M. Beneke, P. Falgari and C. Schwinn, Threshold resummation for pair production of coloured heavy (s)particles at hadron colliders, Nucl. Phys. B 842 (2011) 414 [arXiv:1007.5414] [INSPIRE].
T. Becher and M. Neubert, Threshold resummation in momentum space from effective field theory, Phys. Rev. Lett. 97 (2006) 082001 [hep-ph/0605050] [INSPIRE].
T. Becher, M. Neubert and G. Xu, Dynamical threshold enhancement and resummation in Drell-Yan production, JHEP 07 (2008) 030 [arXiv:0710.0680] [INSPIRE].
U. Langenfeld, S. Moch and P. Uwer, Measuring the running top-quark mass, Phys. Rev. D 80 (2009) 054009 [arXiv:0906.5273] [INSPIRE].
A. Martin, W. Stirling, R. Thorne and G. Watt, Uncertainties on α s in global PDF analyses and implications for predicted hadronic cross sections, Eur. Phys. J. C 64 (2009) 653 [arXiv:0905.3531] [INSPIRE].
M. Beneke, P. Falgari, S. Klein and C. Schwinn, The top-quark pair production cross section at next-to-next-to-leading logarithmic order, arXiv:1112.4606 [INSPIRE].
D0 collaboration, V.M. Abazov et al., Determination of the pole and MSbar masses of the top quark from the \( t\overline t \) cross section, Phys. Lett. B 703 (2011) 422 [arXiv:1104.2887] [INSPIRE].
D0 collaboration, V.M. Abazov et al., Measurement of the \( t\overline t \) production cross section using dilepton events in \( p\overline p \) collisions, Phys. Lett. B 704 (2011) 403 [arXiv:1105.5384] [INSPIRE].
Tevatron Electroweak Working Group, CDF and D0 collaboration, Combination of CDF and D0 results on the mass of the top quark using up to 5.8 fb −1 of data, arXiv:1107.5255 [INSPIRE].
ATLAS collaboration, Measurement of the \( t\overline t \) production cross-section in pp collisions at \( \sqrt {s} = {7} \) TeV using kinematic information of lepton+jets events, ATLAS-CONF-2011-121 (2011).
CMS collaboration, M. Aldaya, K. Lipka and S. Naumann-Emme, Determination of the top quark mass from the \( t\overline t \) cross section measured by CMS at \( \sqrt {s} = {7} \) TeV, EPJ Web Conf. 28 (2012) 12044 [arXiv:1201.5336] [INSPIRE].
M. Beneke, P. Falgari, S. Klein, J. Piclum and C. Schwinn, NNLL threshold resummation for the total top-pair production cross section, arXiv:1205.0988 [INSPIRE].
S. Moch, P. Uwer and A. Vogt, On top-pair hadro-production at next-to-next-to-leading order, Phys. Lett. B 714 (2012) 48 [arXiv:1203.6282] [INSPIRE].
A. Ferroglia, B.D. Pecjak and L.L. Yang, Soft-gluon resummation for boosted top-quark production at hadron colliders, arXiv:1205.3662 [INSPIRE].
R.D. Ball et al., Impact of heavy quark masses on parton distributions and LHC phenomenology, Nucl. Phys. B 849 (2011) 296 [arXiv:1101.1300] [INSPIRE].
H.-L. Lai et al., New parton distributions for collider physics, Phys. Rev. D 82 (2010) 074024 [arXiv:1007.2241] [INSPIRE].
H.-L. Lai et al., Uncertainty induced by QCD coupling in the CTEQ global analysis of parton distributions, Phys. Rev. D 82 (2010) 054021 [arXiv:1004.4624] [INSPIRE].
N. Arkani-Hamed, A. Cohen, E. Katz and A. Nelson, The littlest Higgs, JHEP 07 (2002) 034 [hep-ph/0206021] [INSPIRE].
M. Perelstein, M.E. Peskin and A. Pierce, Top quarks and electroweak symmetry breaking in little Higgs models, Phys. Rev. D 69 (2004) 075002 [hep-ph/0310039] [INSPIRE].
K. Agashe, R. Contino, L. Da Rold and A. Pomarol, A custodial symmetry for \( Zb\overline b \), Phys. Lett. B 641 (2006) 62 [hep-ph/0605341] [INSPIRE].
CMS collaboration, S. Chatrchyan et al., Search for heavy bottom-like quarks in 4.9 inverse femtobarns of pp collisions at \( \sqrt {s} = 7 \) TeV, JHEP 05 (2012) 123 [arXiv:1204.1088] [INSPIRE].
CMS collaboration, S. Chatrchyan et al., Search for heavy, top-like quark pair production in the dilepton final state in pp collisions at \( \sqrt {s} = {7} \) TeV, arXiv:1203.5410 [INSPIRE].
CMS collaboration, S. Chatrchyan et al., Search for a vector-like quark with charge 2/3 in t + Z events from pp collisions at \( \sqrt {s} = {7} \) TeV, Phys. Rev. Lett. 107 (2011) 271802 [arXiv:1109.4985] [INSPIRE].
P. Jimenez-Delgado and E. Reya, Variable flavor number parton distributions and weak gauge and Higgs boson production at hadron colliders at NNLO of QCD, Phys. Rev. D 80 (2009) 114011 [arXiv:0909.1711] [INSPIRE].
H1 and ZEUS collaboration, F. Aaron et al., Combined measurement and QCD analysis of the inclusive e ± p scattering cross sections at HERA, JHEP 01 (2010) 109 [arXiv:0911.0884] [INSPIRE].
G. Watt and R. Thorne, Study of Monte Carlo approach to experimental uncertainty propagation with MSTW 2008 PDFs, arXiv:1205.4024 [INSPIRE].
ATLAS collaboration, G. Aad et al., Measurement of the cross section for top-quark pair production in pp collisions at \( \sqrt {s} = {7} \) TeV with the ATLAS detector using final states with two high-p T leptons, JHEP 05 (2012) 059 [arXiv:1202.4892] [INSPIRE].
ATLAS collaboration, Measurement of \( t\overline t \) production in the all-hadronic channel in 1.02 fb −1 of pp collisions at \( \sqrt {s} = {7} \) TeV with the ATLAS detector, ATLAS-CONF-2011-140 (2011).
CMS collaboration, Combination of top pair production cross section measurements, PAS-TOP-11-024 (2011).
J.M. Campbell, J. Huston and W. Stirling, Hard interactions of quarks and gluons: a primer for LHC physics, Rept. Prog. Phys. 70 (2007) 89 [hep-ph/0611148] [INSPIRE].
T. Gehrmann and E. Remiddi, Numerical evaluation of harmonic polylogarithms, Comput. Phys. Commun. 141 (2001) 296 [hep-ph/0107173] [INSPIRE].
R. Piessens, E. de Doncker-Kapenga, C. Überhuber and D. Kahaner, QUADPACK: a subroutine package for automatic integration, Springer Series in Computational Mathematics, Springer, U.S.A. (1983).
M. Whalley, D. Bourilkov and R. Group, The Les Houches accord PDFs (LHAPDF) and LHAGLUE, hep-ph/0508110 [INSPIRE].
M. Galassi et al., GNU scientific library reference manual, 3rd edition, Network Theory Ltd., U.S.A. (2009).
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Beneke, M., Falgari, P., Klein, S. et al. Inclusive top-pair production phenomenology with TOPIXS . J. High Energ. Phys. 2012, 194 (2012). https://doi.org/10.1007/JHEP07(2012)194
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DOI: https://doi.org/10.1007/JHEP07(2012)194