Soft and virtual corrections topp→H+Xat next-to-next-to-leading order
نویسندگان
چکیده
منابع مشابه
Soft and virtual corrections to pp → H + X at next - to - next - to - leading order
The contributions of virtual corrections and soft gluon emission to the inclusive Higgs boson production cross section pp → H +X are computed at next-to-next-to-leading order in the heavy top quark limit. We show that this part of the total cross section is well behaved in the sense of perturbative convergence, with the NNLO corrections amounting to an enhancement of the NLO cross section by ∼ ...
متن کاملNext-to-next-to-leading order soft and virtual corrections for QCD, Higgs and SUSY processes
I review recent advances in the calculation of higher-order soft-gluon corrections for a variety of QCD, Higgs, and SUSY processes in hadron colliders. A unified approach and master formulas for next-to-next-to-leading order soft and virtual corrections are discussed. I present some applications of the formalism to top quark pair production at the Tevatron and the LHC, top production via anomal...
متن کاملNext-to-next-to-leading-order soft-gluon corrections in direct photon production
Abstract Previous work on soft-gluon resummation for direct photon production is extended to include additional subleading logarithmic terms through O(ααs) and some representative comparisons are made to experimental results from the E-706 and UA-6 Collaborations. The additional terms are small in magnitude, indicating good convergence properties to the level of accuracy calculated. The scale d...
متن کاملNext-to-next-to-leading order soft-gluon corrections in top quark hadroproduction
We calculate next-to-next-to-leading order soft-gluon corrections to top quark total and differential cross sections in hadron colliders. We increase the accuracy of our previous estimates by including additional subleading terms, including next-to-next-to-next-toleading-logarithmic and some virtual terms. We show that the kinematics dependence of the cross section vanishes near threshold and i...
متن کاملTop mass effects in Higgs production at next-to-next-to-leading order QCD: virtual corrections
Top quark mass suppressed terms are calculated for the virtual amplitude for Higgs production in gluon fusion at three-loop level, i.e. O(α3 s ). The method of asymptotic expansions in its automated form is used to evaluate the first three non-vanishing orders in terms of M H /M t , where the first order corresponds to the known results of the effective Lagrangian approach.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2001
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.64.013015