Study of Polarization in B -> VT Decays

Simple item page
dc.creatorDatta, Alakabha
dc.creatorGao, Yanyan
dc.creatorGritsan, Andrei V.
dc.creatorLondon, David
dc.creatorNagashima, Makiko
dc.creatorSzynkman, Alejandro
dc.date2007-11-14
dc.date2008-06-28
dc.date.accessioned2026-07-07T11:38:42Z
dc.date.available2026-07-07T11:38:42Z
dc.descriptionIn this paper, we examine B -> VT decays (V is a vector and T is a tensor meson), whose final-state particles can have transverse or longitudinal polarization. Measurements have been made of B -> ϕK_2^*, and it is found that fT/fL is small, where fT (fL) is the fraction of transverse (longitudinal) decays. We find that the standard model (SM) naively predicts that fT/fL << 1. The two extensions of the naive SM which have been proposed to explain the large fT/fL in B -> ϕK^* -- penguin annihilation and rescattering -- make no firm predictions for the polarization in B -> ϕK_2^*. The two new-physics scenarios, which explain the data in B -> πK and the ϕ(ρ) K^* polarization measurements, can reproduce the fT/fL data in B -> ϕK_2^* only if the B -> T form factors obey a certain hierarchy. Finally, we present the general angular analysis which can be used to get helicity information using two- and three-body decays.
dc.description15 pages, latex, 3 figures (enclosed), several changes made, conclusions unchanged, publication info added
dc.identifierhttps://arxiv.org/abs/0711.2107
dc.identifierhttp://arxiv.org/abs/0711.2107
dc.identifierPhys.Rev.D77:114025,2008
dc.identifierdoi:10.1103/PhysRevD.77.114025
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/199659
dc.subjectHigh Energy Physics - Phenomenology
dc.titleStudy of Polarization in B -> VT Decays
dc.typetext

Files

Collections

arXiv