Weak Decays of Charmed Strange Mesons: Which is Lighter, F(0-) or F*(1-)?
نویسندگان
چکیده
منابع مشابه
Nonleptonic weak decays of charmed mesons.
A previous analysis of two-body Cabibbo allowed nonleptonic decays of D mesons and of Cabibbo allowed and first-forbidden decays of D and D s has been adjourned using more recent experimental data and extended to the Cabibbo forbidden decays of D. Annihilation and W-exchange contributions as well as final state interaction effects (assumed to be dominated by nearby resonances) have been include...
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We have measured the inclusive semileptonic branching fractions of D0, D+, and D+ s mesons. For these measurements, we have used the full CLEO-c open-charm data samples, 818 pb−1 at ECM = 3.774 GeV, giving D 0D̄0 and D+D− events, and 602 pb−1 at ECM = 4.170 GeV, giving D∗± s D ∓ s events. We obtain B(D0 → Xeνe) = (6.46± 0.09± 0.11)%, B(D+ → Xeνe) = (16.13± 0.10 ± 0.29)%, and B(D+ s → Xeνe) = (6....
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Goldstone boson decays of P-wave D s mesons are studied within the framework of Heavy Hadron Chiral Perturbation Theory. We first analyze the simplest single kaon decays of these strange charmed mesons. We derive a model independent prediction for the width of Ds2 and use experimental information on Ds1 to constrain the S-wave contribution to D 1 decay. Single and double pion decay modes are th...
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Two new states in the charm strange sector, D∗sJ(2317) + and DsJ(2460), have recently been discovered at e+e− collider experiments. The new states are first observed in the dominant Ds π0 and D∗+ s π0 modes respectively and are very narrow. They are consistent with 0+ and 1+ P-wave cs mesons. The DsJ(2460) meson is also observed in Ds γ and Ds π+π− modes. A review of the discoveries and possibl...
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Exclusive semileptonic B decays into excited charmed mesons are investigated at order ΛQCD/mQ in the heavy quark effective theory. Differential decay rates for each helicity state of the four lightest excited D mesons (D1, D ∗ 2, D∗ 0, andD ∗ 1) are examined. At zero recoil, ΛQCD/mQ corrections to the matrix elements of the weak currents can be written in terms of the leading IsgurWise function...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics
سال: 1978
ISSN: 0033-068X,1347-4081
DOI: 10.1143/ptp.59.1640