Decay D→K(*)ℓ+νℓ in covariant quark model

Decay D→K(*)ℓ+νℓ in covariant quark model We study the leptonic and semileptonic D-meson decays (D→ℓ+νℓ and D→K(*)ℓ+νℓ) in the framework of covariant quark model with built-in infrared confinement. We compute the required form factors in the entire kinematical momentum transfer region. The calculated form factors are used to evaluate the branching fractions of these transitions. We determine the following ratios of the partial widths: Γ(D0→K-e+νe)/Γ(D+→K¯0e+νe)=1.02, Γ(D0→K-μ+νμ)/Γ(D+→K¯0μ+νμ)=0.99 and Γ(D+→K¯0μ+νμ)/Γ(D+→K¯0e+νe)=0.97 which are in close resemblance with the isospin invariance and experimental results. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review D American Physical Society (APS)

Decay D→K(*)ℓ+νℓ in covariant quark model

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Decay D→K(*)ℓ+νℓ in covariant quark model

Abstract

We study the leptonic and semileptonic D-meson decays (D→ℓ+νℓ and D→K(*)ℓ+νℓ) in the framework of covariant quark model with built-in infrared confinement. We compute the required form factors in the entire kinematical momentum transfer region. The calculated form factors are used to evaluate the branching fractions of these transitions. We determine the following ratios of the partial widths: Γ(D0→K-e+νe)/Γ(D+→K¯0e+νe)=1.02, Γ(D0→K-μ+νμ)/Γ(D+→K¯0μ+νμ)=0.99 and Γ(D+→K¯0μ+νμ)/Γ(D+→K¯0e+νe)=0.97 which are in close resemblance with the isospin invariance and experimental results.
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Publisher
The American Physical Society
Copyright
Copyright © © 2017 American Physical Society
ISSN
1550-7998
eISSN
1550-2368
D.O.I.
10.1103/PhysRevD.96.016017
Publisher site
See Article on Publisher Site

Abstract

We study the leptonic and semileptonic D-meson decays (D→ℓ+νℓ and D→K(*)ℓ+νℓ) in the framework of covariant quark model with built-in infrared confinement. We compute the required form factors in the entire kinematical momentum transfer region. The calculated form factors are used to evaluate the branching fractions of these transitions. We determine the following ratios of the partial widths: Γ(D0→K-e+νe)/Γ(D+→K¯0e+νe)=1.02, Γ(D0→K-μ+νμ)/Γ(D+→K¯0μ+νμ)=0.99 and Γ(D+→K¯0μ+νμ)/Γ(D+→K¯0e+νe)=0.97 which are in close resemblance with the isospin invariance and experimental results.

Journal

Physical Review DAmerican Physical Society (APS)

Published: Jul 1, 2017

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