B-mesons from top-quark decay in presence of the charged-Higgs boson in the Zero-Mass Variable-Flavor-Number Scheme

Abstract

We study the energy spectrum of the inclusive bottom-flavored mesons in top-quark decay into a charged-Higgs-boson and a massless bottom quark at next-to-leading order (NLO) in the two-Higgs-doublet model. To extract the result we work in the Zero-Mass Variable-Flavor-Number scheme(ZM-VFNs) using realistic nonperturbative fragmentation functions obtained through a global fit to $e^{+}{e}^{-}$ data from CERN LEP1 and SLAC SLC on the Z-boson resonance. We study both the contribution of the bottom-quark fragmentation and the gluon fragmentation to produce the bottom-flavored meson (B-Meson). We find that the contribution of the gluon leads to an appreciable reduction in decay rate at low values of the B-meson energy. It means the NLO corrections are significant.

7 pages, 4 figures

References in corpus (5)

• Finite-Mass Effects on Inclusive B-Meson Hadroproduction
• Fermionic Corrections to the Heavy-Quark Pair Production in the Quark-Antiquark Channel
• Next-to-leading order QCD effects and the top quark mass measurements at the LHC
• A Phenomenological Study of Bottom Quark Fragmentation in Top Quark Decay
• Improved sensitivity to charged Higgs searches in Top quark decays $t\to b{H}^{+}\to b({\tau }^{+}{\nu }_{\tau })$ at the LHC using $\tau$ polarisation and multivariate tecnniques

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