Unintegrated parton distributions and electroweak boson production at hadron colliders
Abstract
We describe the use of doubly-unintegrated parton distributions in hadron-hadron collisions, using the (z,k_t)-factorisation prescription where the transverse momentum of the incoming parton is generated in the last evolution step. We apply this formalism to calculate the transverse momentum (P_T) distributions of produced W and Z bosons and compare the predictions to Tevatron Run 1 data. We find that the observed P_T distributions can be generated almost entirely by the leading order q_1 q_2 -> W,Z subprocesses, using known and universal doubly-unintegrated quark distributions. We also calculate the P_T distribution of the Standard Model Higgs boson at the LHC, where the dominant production mechanism is by gluon-gluon fusion.
Keywords
Cite
@article{arxiv.hep-ph/0309096,
title = {Unintegrated parton distributions and electroweak boson production at hadron colliders},
author = {G. Watt and A. D. Martin and M. G. Ryskin},
journal= {arXiv preprint arXiv:hep-ph/0309096},
year = {2014}
}
Comments
20 pages, 8 figures. Version to appear in Phys. Rev. D; correction to Higgs P_T distribution made in Erratum