Charm meson resonances in $D\to P\ell \nu$ decays

Abstract

Motivated by recent experimental results we reconsider semileptonic $D\to P\ell {\nu }_{\ell }$ decays within a model which combines heavy quark symmetry and properties of the chiral Lagrangian. We include excited charm meson states, some of them recently observed, in our Lagrangian and determine their impact on the charm meson semileptonic form factors. We find that the inclusion of excited charm meson states in the model leads to a rather good agreement with the experimental results on the $q^2$ shape of the $F_{+}(q^2)$ form factor. We also calculate branching ratios for all $D\to P\ell {\nu }_{\ell }$ decays.

arXiv comment9 pages, 4 figures; minor corrections, added some discussion, version as published

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• Study of D0 --> pi- e+ nu(e), D+ --> pi0 e+ nu(e), D0 --> K- e+ nu(e), and D+ --> anti-K0 e+ nu(e) in Tagged Decays of the psi(3770) Resonance
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• Semileptonic Decays of Charmed Mesons to Light Scalar Mesons
• Studies of D^+ -> {eta', eta, phi} e^+ nu_e
• Decay $D\to K^{(\ast )}{\ell }^{+}{\nu }_{\ell }$ in covariant quark model
• Measurement of absolute branching fractions of inclusive semileptonic decays of charm and charmed-strange mesons
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• Probing the R-parity violating supersymmetric effects in the exclusive $c\to d/s\ell {\nu }_{\ell }$ decays
• Improved measurement of the semileptonic decay $D_s^{+}\to K^0{e}^{+}{\nu }_e$
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• Charm Leptonic and Semileptonic Decays
• Role of Resonances in Heavy Meson Processes within Standard Model and Beyond
• First Measurement of the $D_s^{+}\to K^0{\mu }^{+}{\nu }_{\mu }$ Decay
• Effective Theory Description of Weak Annihilation in B-> Xu l nu Decays