We use the framework of a relativistic constituent quark model to study the semileptonic transitions of the Bc meson into (c̅ c) charmonium states where (c̅ c)=ηc(1S0), J/ψ(3S1), χc0(3P0), χc1(3P1), hc(1P1), χc2(3P2), ψ(3D2). We compute the q2 dependence of all relevant form factors and give predictions for their semileptonic Bc decay modes including also their τ modes. We derive a formula for the polar angle distribution of the charged lepton in the (lνl)-c.m. frame and compute the partial helicity rates that multiply the angular factors in the decay distribution. For the discovery channel Bc→J/ψ(→μ+μ-)lν we compute the transverse/longitudinal composition of the J/ψ which can be determined by an angular analysis of the decay J/ψ→μ+μ-. We compare our results with the results of other calculations.
Semileptonic decays of B(c) mesons into charmonium states in a relativistic quark model / MIKHAIL A., Ivanov; JUERGEN G., Korner; Santorelli, Pietro. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - STAMPA. - 71:(2005), pp. 094006-1-094006-13. [10.1103/PhysRevD.71.094006]
Semileptonic decays of B(c) mesons into charmonium states in a relativistic quark model
SANTORELLI, PIETRO
2005
Abstract
We use the framework of a relativistic constituent quark model to study the semileptonic transitions of the Bc meson into (c̅ c) charmonium states where (c̅ c)=ηc(1S0), J/ψ(3S1), χc0(3P0), χc1(3P1), hc(1P1), χc2(3P2), ψ(3D2). We compute the q2 dependence of all relevant form factors and give predictions for their semileptonic Bc decay modes including also their τ modes. We derive a formula for the polar angle distribution of the charged lepton in the (lνl)-c.m. frame and compute the partial helicity rates that multiply the angular factors in the decay distribution. For the discovery channel Bc→J/ψ(→μ+μ-)lν we compute the transverse/longitudinal composition of the J/ψ which can be determined by an angular analysis of the decay J/ψ→μ+μ-. We compare our results with the results of other calculations.File | Dimensione | Formato | |
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