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IPPP-15-72
DCPT-15-144
MCNET-15-34
arXiv:1512.01243
Phys.Rev. D93 (2016) 035004

by: Degrande, CĂ©line (Durham U.) et al.

Abstract:
We study the phenomenology of the Georgi-Machacek model at next-to-leading order (NLO) in QCD matched to parton shower, using a fully-automated tool chain based on MadGraph5_aMC@NLO and FeynRules. We focus on the production of the fermiophobic custodial fiveplet scalars H_5^0, H_5^+/-, and H_5^++/-- through vector boson fusion (VBF), associated production with a vector boson (V H_5), and scalar pair production (H_5 H_5). For these production mechanisms we compute NLO corrections to production rates as well as to differential distributions. Our results demonstrate that the Standard Model (SM) overall K-factors for such processes cannot in general be directly applied to beyond-the-SM distributions, due both to differences in the scalar electroweak charges and to variation of the K-factors over the differential distributions.
Link: 
http://inspirehep.net/record/1408289
Publ date: 
Monday, December 7, 2015 - 03:30