The fully differential single-top-quark cross section in next-to-leading order QCD
نویسنده
چکیده
We present a new next-to-leading order calculation for fully differential single-topquark final states. The calculation is performed using phase space slicing and dipole subtraction methods. The results of the methods are found to be in agreement. The dipole subtraction method calculation retains the full spin dependence of the final state particles. We show a few numerical results to illustrate the utility and consistency of the resulting computer implementations.
منابع مشابه
Fully differential QCD corrections to single top quark final states
The electroweak production of single top quarks, despite being smaller in rate than it’s strong interaction counterpart — tt̄ pair production, offers many physics possibilities for the Tevatron Run II and the LHC. Direct measurement of |Vtb|2 and sensitivity beyond the Standard Model are two examples . It is also a background to some signals for the Higgs boson and various types of new physics. ...
متن کاملTop-quark decay at next-to-next-to-leading order in QCD.
We present the complete calculation of the top-quark decay width at next-to-next-to-leading order in QCD, including next-to-leading electroweak corrections as well as finite bottom quark mass and W boson width effects. In particular, we also show the first results of the fully differential decay rates for the top-quark semileptonic decay t → W(+)(l(+)ν)b at next-to-next-to-leading order in QCD....
متن کاملO ( α 2 s ) corrections to fully - differential top quark decays
We describe a calculation of the fully-differential decay rate of a top quark to a massless b-quark and a lepton pair at next-to-next-to-leading order in perturbative QCD. Technical details of the calculation are discussed and selected results for kinematic distributions are shown.
متن کاملRenormalization-group improved calculation of top-quark production near threshold.
The top-quark cross section close to threshold in e(+)e(-) annihilation is computed including the summation of logarithms of the velocity at next-to-next-to-leading-logarithmic order in QCD. The remaining theoretical uncertainty in the normalization of the total cross section is at the few-percent level, an order of magnitude smaller than in previous next-to-next-to-leading order calculations. ...
متن کامل0 Next - to - leading order QCD corrections to top quark spin correlations at hadron colliders : the reactions qq̄ → tt̄ ( g )
Next-to-leading order QCD corrections to top quark spin correlations at hadron colliders: the reactions q ¯ q → t ¯ t(g) Abstract: Future hadron collider experiments are expected to record large to huge samples of t ¯ t events. The analysis of these data with respect to t ¯ t spin-spin correlations requires precise predictions of the production of these quark pairs in a general spin configurati...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2002