Next-to-leading order QCD corrections to $t\bar t\gamma$ production at the 7 TeV LHC - INSPIRE

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Next-to-leading order QCD corrections to $t\bar t\gamma$ production at the 7 TeV LHC

Oct, 2011

4 pages

Published in:

Chin.Phys.Lett. 28 (2011) 111401

e-Print:

1110.2315 [hep-ph]

DOI:

10.1088/0256-307X/28/11/111401

View in:

ADS Abstract Service

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Abstract: (arXiv)

We present the theoretical predictions including the complete next-to-leading order (NLO) QCD corrections to the top-quark pair production in association with a photon at the LHC with center-of-mass system energy of

7 {\rm TeV}

. The uncertainties of the leading order (LO) and NLO QCD corrected cross sections due to the renormalization/factorization scale, and the distributions of the transverse momenta of final top-quark and photon are studied. Moreover, we provide the numerical results of the LO, NLO QCD corrected cross sections and the corresponding

K

-factors with different photon transverse momentum cuts. We also discuss the impact of QCD corrections to the \ppttga in case of there existing the exotic top-quark with an electric charge of

-4e/3

at the

7 {\rm TeV}

LHC.

Note:

4 pages, 3 figures

12.38.Bx
14.65.Ha
14.70.Bh
quantum chromodynamics: correction
higher-order: 1
photon: transverse momentum
top: pair production
cross section: calculated
scale: factorization
CERN LHC Coll

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