Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-05-29
JHEP 0908:058,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
56 pages, 11 figures. v2: typos in eqs. (4.6), (4.19), (4.24), (4.63)-(4.66) corrected, reference added, version to appear in
Scientific paper
10.1088/1126-6708/2009/08/058
We compute the one-loop QCD amplitudes for the processes HqqQQ and Hqqgg, the latter restricted to the case of opposite-helicity gluons. Analytic expressions are presented for the color- and helicity-decomposed amplitudes. The coupling of the Higgs boson to gluons is treated by an effective interaction in the limit of large top quark mass. The Higgs field is split into a complex field phi and its complex conjugate phi-dagger. The split is useful because amplitudes involving phi have different analytic structure from those involving phi-dagger. We compute the cut-containing pieces of the amplitudes using generalized unitarity. The remaining rational parts are obtained by on-shell recursion. Our results for HqqQQ agree with previous semi-numerical computations. We also show how to convert existing semi-numerical results for the production of a scalar Higgs boson into analogous results for a pseudoscalar Higgs boson.
Dixon Lance J.
Sofianatos Yorgos
No associations
LandOfFree
Analytic one-loop amplitudes for a Higgs boson plus four partons 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 Analytic one-loop amplitudes for a Higgs boson plus four partons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analytic one-loop amplitudes for a Higgs boson plus four partons will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-81689