Transverse momentum resummation for Higgs boson produced via bb-bar fusion at hadron colliders

Abstract

We study the impact of initial-state multiple parton radiation on transverse momentum $(q_T)$ distribution of Higgs boson produced via bottom quark fusion at hadron colliders. The shape of the resulting $q_T$ distribution is affected by the bottom-quark mass corrections and by the strong kinematical behavior of the bottom-quark parton density. We account for both features in the full range of $q_T$. To do this, we formulate the resummation calculation in a general-mass factorization (S-ACOT) scheme and introduce a correction in the resummed-term to account for the effect from large-$q_T$ kinematics of Higgs boson. The results of this resummation are compared to fixed-order and PYTHIA predictions.

Comments: LaTex, 20 pages, 7 figures