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IPPP-15-41
DCPT-15-82
MCNET-15-17
CAVENDISH-HEP-15-04
ZU-TH-18-15
arXiv:1507.02549
JHEP 1510 (2015) 145

by: Degrande, Celine (Durham U., IPPP) et al.

Abstract:
In this paper we study the production of a heavy charged Higgs boson in association with heavy quarks at the LHC, in a type-II two-Higgs-doublet model. We present for the first time fully-differential results obtained in the four-flavour scheme at NLO accuracy, both at fixed order and including the matching with parton showers. Relevant differential distributions are studied for two values of the charged boson mass and a thorough comparison is performed between predictions obtained in the four- and five-flavour schemes. We show that the agreement between the two schemes is improved by NLO(+PS) corrections for observables inclusive in the degrees of freedom of bottom quarks. We argue that the four-flavour scheme leads to more reliable predictions, thanks to its accurate description of the bottom-quark kinematics and its small dependence on the Monte Carlos, which in turn is rather large in the five-flavour scheme. A detailed set of recommendations for the simulation of this process in experimental analyses at the LHC is provided.
Link: 
http://inspirehep.net/record/1382155
Publ date: 
Friday, July 10, 2015 - 04:27