Next-to-leading order QCD corrections to a heavy resonance production and decay into top quark pair at the LHC
- Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China)
We present a complete next-to-leading order (NLO) QCD calculation to a heavy resonance production and decay into a top quark pair at the LHC, where the resonance could be either a Randall-Sundrum Kaluza-Klein graviton G or an extra gauge boson Z{sup '}. The complete NLO QCD corrections can enhance the total cross sections by about 80%-100% and 20%-40% for the G and the Z{sup '}, respectively, depending on the resonance mass. We also explore in detail the NLO corrections to the polar angle distributions of the top quark, and our results show that the shapes of the NLO distributions can be different from the leading order ones for the Kaluza-Klein graviton. Moreover, we study the NLO corrections to the spin correlations of the top quark pair production via the above process, and find that the corrections are small.
- OSTI ID:
- 21410042
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 82, Issue 1; Other Information: DOI: 10.1103/PhysRevD.82.014020; (c) 2010 The American Physical Society; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BOSONS
CERN LHC
CORRECTIONS
CORRELATIONS
DISTRIBUTION
KALUZA-KLEIN THEORY
MASS
PAIR PRODUCTION
PARTICLE DECAY
QUANTUM CHROMODYNAMICS
RESONANCE
SPIN
T QUARKS
TOTAL CROSS SECTIONS
ACCELERATORS
ANGULAR MOMENTUM
CROSS SECTIONS
CYCLIC ACCELERATORS
DECAY
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
POSTULATED PARTICLES
QUANTUM FIELD THEORY
QUARKS
STORAGE RINGS
SYNCHROTRONS
TOP PARTICLES
UNIFIED-FIELD THEORIES