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D Physics
High Energy Physics - Phenomenology · Submitted 16 Feb 2007
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We include excited charm meson states in our Lagrangians and determine their impact on the charm meson semileptonic form factors.
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The abstract, sentence by sentence
Recently a lot of new experimental results on open charm hadrons have appeared. In particular many D meson resonances have been discovered. We discuss strong decays of positive and negative parity charmed mesons within heavy meson chiral perturbation theory and study the impact of excited charm states on the determination of the effective meson couplings. Motivated by recent experimental results we also reconsider semileptonic D to P l nu and D to V l nu decays within a model which combines heavy quark symmetry and properties of the chiral Lagrangian. Using limits of soft collinear effective theory and heavy quark effective theory we parametrize the semileptonic form factors. We include excited charm meson states in our Lagrangians and determine their impact on the charm meson semileptonic form factors. In some scenarios of new physics an up-like heavy quark appears, which induces FCNC at tree level for the c to u Z transitions. We investigate FCNC effects in D rare decays in particular the c to u l+ l- transition which might occur in D+ to pi+ l+ l- and D0 to rho0 l+ l-.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | Recently a lot of new experimental results on open charm hadrons have appeared. | background 1.00 | 0.03 | 0.01 | asserted 1.00 |
| s1 | In particular many D meson resonances have been discovered. | background 1.00 | 0.04 | 0.02 | asserted 1.00 |
| s2 | We discuss strong decays of positive and negative parity charmed mesons within heavy meson chiral perturbation theory and study the impact of excited charm states on the determination of the effective meson couplings. | contribution 0.98 | 0.90 | 0.08 | asserted 0.88 |
| s3 | Motivated by recent experimental results we also reconsider semileptonic D to P l nu and D to V l nu decays within a model which combines heavy quark symmetry and properties of the chiral Lagrangian. | contribution 0.93 | 0.85 | 0.04 | asserted 0.88 |
| s4 | Using limits of soft collinear effective theory and heavy quark effective theory we parametrize the semileptonic form factors. | method 1.00 | 0.83 | 0.03 | asserted 0.99 |
| s5 | We include excited charm meson states in our Lagrangians and determine their impact on the charm meson semileptonic form factors. | contribution 0.50 | 0.94 | 0.09 | asserted 1.00 |
| s6 | In some scenarios of new physics an up-like heavy quark appears, which induces FCNC at tree level for the c to u Z transitions. | background 0.96 | 0.07 | 0.03 | asserted 0.47 |
| s7 | We investigate FCNC effects in D rare decays in particular the c to u l+ l- transition which might occur in D+ to pi+ l+ l- and D0 to rho0 l+ l-. | contribution 1.00 | 0.70 | 0.06 | speculative 0.73 |
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The paper
Original abstract
Recently a lot of new experimental results on open charm hadrons have appeared. In particular many D meson resonances have been discovered. We discuss strong decays of positive and negative parity charmed mesons within heavy meson chiral perturbation theory and study the impact of excited charm states on the determination of the effective meson couplings. Motivated by recent experimental results we also reconsider semileptonic D to P l nu and D to V l nu decays within a model which combines heavy quark symmetry and properties of the chiral Lagrangian. Using limits of soft collinear effective theory and heavy quark effective theory we parametrize the semileptonic form factors. We include excited charm meson states in our Lagrangians and determine their impact on the charm meson semileptonic form factors. In some scenarios of new physics an up-like heavy quark appears, which induces FCNC at tree level for the c to u Z transitions. We investigate FCNC effects in D rare decays in particular the c to u l+ l- transition which might occur in D+ to pi+ l+ l- and D0 to rho0 l+ l-.
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Over the past few decades, there are several measurements of the weak radiative decays of charmed meson [ref] , and the corresponding theoretical researches [ref] .
Weak radiative decay $\Lambda_{c}^{+}\to\Sigma^{+}\gamma$ using light-cone sum rules · Introduction · 1.00
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