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Probing the nature of the Higgs-like boson via h→VF decays


Isidori, Gino; Manohar, Aneesh V; Trott, Michael (2014). Probing the nature of the Higgs-like boson via h→VF decays. Physics Letters B, 728:131-135.

Abstract

We give a general decomposition of the h→VF amplitude where V={W±,Z0} and F is a generic leptonic or hadronic final state, in the standard model (SM), and in the context of a general effective field theory. The differential distributions for F=ℓ+ℓ-, ℓνbar (ℓ=e,μ) are reported, and we show how such distributions can be used to determine modified Higgs couplings that cannot be directly extracted from a global fit to Higgs signal strengths. We also demonstrate how rare h→VP decays, where P is a pseudo-scalar meson, with SM rates in the 10-5 range, can be used to provide complementary information on the couplings of the newly discovered Higgs-like scalar and are an interesting probe of the vacuum structure of the theory.

Abstract

We give a general decomposition of the h→VF amplitude where V={W±,Z0} and F is a generic leptonic or hadronic final state, in the standard model (SM), and in the context of a general effective field theory. The differential distributions for F=ℓ+ℓ-, ℓνbar (ℓ=e,μ) are reported, and we show how such distributions can be used to determine modified Higgs couplings that cannot be directly extracted from a global fit to Higgs signal strengths. We also demonstrate how rare h→VP decays, where P is a pseudo-scalar meson, with SM rates in the 10-5 range, can be used to provide complementary information on the couplings of the newly discovered Higgs-like scalar and are an interesting probe of the vacuum structure of the theory.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2014
Deposited On:20 Feb 2015 22:43
Last Modified:21 Nov 2017 17:48
Publisher:Elsevier
ISSN:0370-2693
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1016/j.physletb.2013.11.054

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