| Автор | Lance J. Dixon |
| Автор | Yorgos Sofianatos |
| Дата выпуска | 2009-08-01 |
| dc.description | We compute the one-loop QCD amplitudes for the processes Hq̅qQ̅Q and Hq̅qgg, 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 φ and its complex conjugate φ<sup>†</sup>. The split is useful because amplitudes involving φ have different analytic structure from those involving φ<sup>†</sup>. 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 Hq̅qQ̅Q 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. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Analytic one-loop amplitudes for a Higgs boson plus four partons |
| Тип | paper |
| DOI | 10.1088/1126-6708/2009/08/058 |
| Electronic ISSN | 1029- 8479 |
| Print ISSN | 1126-6708 |
| Журнал | Journal of High Energy Physics |
| Том | 2009 |
| Первая страница | 58 |
| Последняя страница | 058 |
| Аффилиация | Lance J. Dixon; SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94309, U.S.A. |
| Аффилиация | Yorgos Sofianatos; SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94309, U.S.A. |
| Выпуск | 08 |
