Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-07-15
Phys.Rev.D82:073016,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages
Scientific paper
10.1103/PhysRevD.82.073016
Recently we have presented an analysis of flavor changing neutral coupling mediated radiative top quark decays at next-to-leading order in QCD. In the present paper we provide the details of the calculation of QCD corrections to t-> q gamma and t-> q Z decays within the effective theory approach including operator mixing. In particular, we calculate virtual matrix element corrections and the corresponding bremsstrahlung contributions. In the case of t-> q gamma we study the effects of kinematic cuts on the extracted branching ratios. Analytical formulae are given at all stages of the calculation. We find that the t-> q gamma decay can be used to probe also the effective operators mediating t-> q g processes, since these can naturally contribute 10% or more to the radiative decay, given typical experimental cuts on the decay kinematics at hadron colliders. Conversely, we argue that any positive experimental signal of the t-> q g process would indicate a natural lower bound on t-> q gamma decay rate.
Drobnak Jure
Fajfer Svjetlana
Kamenik Jernej F.
No associations
LandOfFree
QCD Corrections to Flavor Changing Neutral Coupling Mediated Rare Top Quark Decays does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with QCD Corrections to Flavor Changing Neutral Coupling Mediated Rare Top Quark Decays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and QCD Corrections to Flavor Changing Neutral Coupling Mediated Rare Top Quark Decays will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-599309