On exclusive h → Vℓ⁺ℓ⁻ decays

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• 作者：Pietro Colangelo^a ; Fulvia De Fazio^a ; ^{fulvia.defazio@ba.infn.it" class="auth_mail" title="E-mail the corresponding author} ; Pietro Santorelli^b ; ^c
• 刊名：Physics Letters B
• 出版年：2016
• 出版时间：10 September 2016
• 年：2016
• 卷：760
• 期：Complete
• 页码：335-340
• 全文大小：486 K

文摘

We study a set of exclusive decay modes of the Standard Model Higgs boson into a vector meson and a dilepton pair: h→Vℓ⁺ℓ⁻$h\to V{\ell }^{+}{\ell }^{-}$, with V=ϒ,J/ψ,ϕ$V=\mathrm{\Upsilon },J/\psi ,\varphi$, and ℓ=μ,τ$\ell =\mu ,\tau$, determining the decay rates, the dilepton mass spectra and the V   longitudinal helicity fraction distributions. In the same framework, we analyze the exclusive modes into neutrino pairs $h\to V\nu \overline{\nu }$. We also discuss the implications of the recent CMS and ATLAS results for the lepton flavor-changing process h→τ⁺μ⁻$h\to {\tau }^{+}{\mu }^{-}$ on the h→Vτ⁺μ⁻$h\to V{\tau }^{+}{\mu }^{-}$ decay modes.