Bs→Ds(3040)form factors andBsdecays intoDs(3040)

2010/08/31 by Gang Li, Feng-lan Shao, Wei Wang · 61 citations
Mathematics · Medicine · Physics and Astronomy · #Artificial intelligence #Computer science #Mathematics #Medical Imaging Techniques and Applications #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevd.82.094031

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 82(9) (American Physical Society) · 16 pages, 6 figures

openalex publication_date 2010/11/29 · arxiv created 2010/12/07 · arxiv updated 2010/12/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Under the assignment of D_s(3040) as a radially excited p-wave cs state with J^P=1⁺, we compute the B_s\ensuremath→D_s(3040) form factors within the covariant light-front quark model. Two classification schemes for the p-wave cs meson are adopted. We also use our results to predict the branching ratios (BRs), polarization fractions, and angular asymmetries in semileptonic B_s\ensuremath→D_s(3040)\ensuremathℓ\ensuremathν (\ensuremathℓ=e, \ensuremathμ, \ensuremathτ). The BRs are found at the order of 10^\ensuremath-3 for \ensuremathℓ=e, \ensuremathμ, and 10^\ensuremath-5 for \ensuremathℓ=\ensuremathτ. We find that the polarization fractions and angular asymmetries could be useful to pin down the ambiguities in theoretical prescriptions for D_s(3040). In addition, we investigate the nonleptonic B_s\ensuremath→D_s(3040)M decays under the factorization method, where M denotes a charged pseudoscalar or a vector meson. The BRs of B_s\ensuremath→D_s(3040)\ensuremathρ and B_s\ensuremath→D_s(3040)D_s^* reach the order of 10^\ensuremath-3, while the other channels are typically smaller by 1--2 orders.

Citations

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