Search

We calculate the next-to-leading order (NLO) QCD corrections to J/ψ associated with W+b production from top quark decay. Our results show that the decay width for process t→J/ψ+W++b+X at the leading order is significantly enhanced by the NLO QCD corrections. This process has the potential to be detected at the LHC. It provides an interesting signature that could be studied at the LHC, and if the J/ψ associated production with W+b from top quark decay is really detected, it will be useful for testing the nonrelativistic QCD factorization formalism. [ABSTRACT FROM AUTHOR]

The Higgs boson production associated with a W boson and a photon at the Large Hadron Collider (LHC) can be used to probe the coupling between the Higgs boson and vector gauge bosons and discover a signature of new physics. We present precision predictions up to the QCD next-to-leading order (NLO) in the standard model for this process involving the subsequential weak decays of the final Higgs and W boson. The dependence of the leading order (LO) and the QCD NLO corrected integrated cross sections on the factorization and renormalization energy scale is studied. We provide the LO and QCD NLO corrected distributions of the transverse momenta and rapidities of final products. We find that the LO cross section is significantly enhanced by the QCD NLO correction, and the K-factor value is obviously related to the physical observables and the phase space regions. [ABSTRACT FROM AUTHOR]