Probing electroweak precision physics via boosted Higgs-strahlung at the LHC

Banerjee, S., Englert, C. , Gupta, R. S. and Spannowsky, M. (2018) Probing electroweak precision physics via boosted Higgs-strahlung at the LHC. Physical Review D, 98, 095012. (doi: 10.1103/PhysRevD.98.095012)

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We study the process p p → Z ( ℓ + ℓ − ) h ( b ¯ b ) in the Standard Model Effective Field Theory (SMEFT) at high energies using subjet techniques to reconstruct the Higgs boson. We show that at high energies this process probes four directions in the dimension 6 EFT space, namely the operators that contribute to the four contact interactions, h Z μ ¯ f γ μ f , where f = u L , u R , d L and d R . These four directions are, however, already constrained by the Z -pole and diboson measurements at LEP. We show that by utilising the energy growth of this process in the SMEFT and the accuracy that can be achieved by using subjet techniques at the High Luminosity LHC, one can obtain bounds on these operators that are an order of magnitude better than existing LEP bounds.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Englert, Professor Christoph
Authors: Banerjee, S., Englert, C., Gupta, R. S., and Spannowsky, M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review D
Publisher:American Physical Society
ISSN (Online):1550-2368
Copyright Holders:Copyright © 2018 American Physical Society
First Published:First published in Physical Review D 98:095012
Publisher Policy:Reproduced under a Creative Commons License
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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
729782Phenomenology from Lattice QCD and Collider PhysicsChristine DaviesScience & Technology Facilities Council (STFC)ST/P000746/1S&E P&A - PHYSICS & ASTRONOMY