2,508 research outputs found
Flavor-Changing Top Quark Rare Decays in the Littlest Higgs Model with T-Parity
We analyze the rare and flavor changing decay of the top quark into a charm
quark and a gauge boson in the littlest Higgs model with T-parity (LHT). We
calculate the one-loop level contributions from the T-parity odd mirror quarks
and gauge bosons. We find that the decay in the LHT
model can be significantly enhanced relative to those in the Standard Model.
Our numerical results show that the top quark FCNC decay can be as large as
, and in the favorite parameter space in the LHT model.Comment: 12 pages, 3 figure
NLO QCD corrections to Single Top and W associated production at the LHC with forward detector acceptances
In this paper we study the Single Top and W boson associated photoproduction
via the main reaction at
the 14 TeV Large Hadron Collider (LHC) up to next-to-leading order (NLO) QCD
level assuming a typical LHC multipurpose forward detector. We use the
Five-Flavor-Number Schemes (5FNS) with massless bottom quark assumption in the
whole calculation. Our results show that the QCD NLO corrections can reduce the
scale uncertainty. The typical K-factors are in the range of 1.15 to 1.2 which
lead to the QCD NLO corrections of 15 to 20 correspond to the
leading-order (LO) predictions with our chosen parameters.Comment: 41pages, 12figures. arXiv admin note: text overlap with
arXiv:1106.2890 by other author
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