| THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS |
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Next-to-Leading Order QCD Corrections to t |
| DUAN Peng-Fei, ZHANG Ren-You, MA Wen-Gan, HAN Liang, GUO Lei, WANG Shao-Ming
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Department of Modern Physics, University of Science and Technology of China, Hefei 230026
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DUAN Peng-Fei, ZHANG Ren-You, MA Wen-Gan et al 2011 Chin. Phys. Lett. 28 111401 |
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Abstract We present 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 the center-of-mass system energy of 7 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 the final top quark and the 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 pp →ttγ+X in the case that there exists an exotic top quark with an electric charge of −4e/3 at the 7 TeV LHC.
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| Keywords:
14.65.Ha
14.70.Bh
12.38.Bx
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Received: 21 March 2011
Published: 30 October 2011
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