Higgs bosons with enhanced coupling to bottom quarks are copiously produced at hadron colliders via [Formula Presented] where the initial b quarks reside in the proton sea. We reexamine the calculation of the next-to-leading-order cross section for this process and argue that the appropriate factorization scale for the b distribution functions is approximately [Formula Presented] rather than [Formula Presented] as had been previously assumed. This greatly improves the convergence of the perturbation series, and yields a result with mild factorization-scale dependence. We also show that the leading-order calculation of [Formula Presented] integrated over the momenta of the final-state particles, is very sensitive to the factorization and renormalization scales. For scales of order [Formula Presented] the [Formula Presented] cross section is comparable to that of [Formula Presented] in contrast with the order-of-magnitude discrepancy between these two calculations for the scale [Formula Presented] The result we obtain improves the prospects for Higgs-boson discovery at hadron colliders for large values of [Formula Presented].
|Original language||English (US)|
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|State||Published - 2003|
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)