VBS W±W±H production at the HL-LHC and a 100 TeV pp-collider

Englert, C. , Li, Q., Spannowsky, M., Wang, M. and Wang, L. (2017) VBS W±W±H production at the HL-LHC and a 100 TeV pp-collider. International Journal of Modern Physics A, 32, 1750106. (doi: 10.1142/S0217751X17501068)

Abstract

W±W±HW±W±H production at hadron colliders through vector boson scattering is a so far unconsidered process, which leads to a clean signature of two same-sign charged leptons and two widely separated jets. This process is sensitive to the HHHHHH and WWHHWWHH couplings and any deviation of these couplings from their SM predictions serves as direct evidence of new physics beyond the SM. In this paper, we perform a Monte Carlo study of this process for the s√=14TeVs=14TeV LHC and a 100 TeV pppp-collider, and provide projections of the constraints on the triple-Higgs and WWHHWWHH quartic couplings for these environments. In particular, we consider the impact of pileup on the expected sensitivity in this channel. Our analysis demonstrates that although the sensitivity to the HHHHHH coupling is rather low, the WWHHWWHH coupling can be constrained in this channel within ∼∼100% and ∼∼20% at 95% confidence level around the SM prediction at the HL-LHC and a 100 TeV pppp-collider, respectively. We have also provided results with simple truncation scheme, in consideration of unitarity safety.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Englert, Professor Christoph
• Authors: Englert, C., Li, Q., Spannowsky, M., Wang, M., and Wang, L.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: International Journal of Modern Physics A
• Publisher: World Scientific Publishing
• ISSN: 0217-751X
• ISSN (Online): 1793-656X
• Copyright Holders: Copyright © 2017 World Scientific Publishing
• First Published: First published in International Journal of Modern Physics A 32:1750106
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher