Higgs Pair Production: Improved Description by Matrix Element Matching
Abstract
Higgs pair production is crucial for measuring the Higgs boson self-coupling. The dominant channel at hadron colliders is gluon fusion via heavy-quark loops. We present the results of a fully exclusive simulation of gluon fusion Higgs pair production based on the matrix elements for hh + 0, 1 partons including full heavy-quark loop dependence, matched to a parton shower. We examine and validate this new description by comparing it with (a) Higgs Effective Theory predictions, (b) exact hh + 0-parton sample showered by pythia, and (c) exact hh+1-parton distributions, by looking at the most relevant kinematic distributions, such as PTh, PThh, Mhh spectra, and jet rate as well. We find that matched samples provide an state-of-the-art accurate exclusive description of the final state. The relevant LHE files for Higgs pair productions at the LHC can be accessed via http://hepfarm02.phy.pku.edu.cn/foswiki/CMS/HH, which can be used for relevant experimental analysis.
Cite
@article{arxiv.1312.3830,
title = {Higgs Pair Production: Improved Description by Matrix Element Matching},
author = {Qiang Li and Qi-Shu Yan and Xiaoran Zhao},
journal= {arXiv preprint arXiv:1312.3830},
year = {2014}
}
Comments
accepted version in Phys. Rev. D. arXiv admin note: substantial text overlap with arXiv:1110.1728