298 articles – 2332 Notices  [english version]
 HAL : in2p3-00335768, version 1
 arXiv : 0808.1838
 Physical Review D 78 (2008) 071101
 Measurement of the Branching Fractions of the Radiative Charm Decays $D^{0} \to {\bar K}^{*0} \gamma$ and $D^{0} \to \phi \gamma$
 BABAR Collaboration(s)
 (2008)
 We present a measurement of the branching fractions for the Cabibbo-favored radiative decay, $D^{0} \to {\bar K}^{*0} \gamma$, and the Cabibbo-suppressed radiative decay, $D^{0} \to \phi \gamma$. These measurements are based on a data sample corresponding to an integrated luminosity of $387.1 fb^{-1}$, recorded with the BaBar detector at the PEP-II $e^+e^-$ asymmetric-energy collider operating at center-of-mass energies 10.58 and 10.54 GeV. We measure the branching fractions relative to the well-studied decay $D^{0} \to K^{-} \pi^{+}$ and find ${\cal B}(D^{0} \to {\bar K}^{*0} \gamma)/{\cal B}(D^{0} \to K^{-} \pi^{+}) = (8.43 \pm 0.51 \pm 0.70) \times 10^{-3}$ and ${\cal B}(D^{0} \to \phi \gamma)/{\cal B}(D^{0} \to K^{-} \pi^{+}) = (7.15 \pm 0.78 \pm 0.69) \times 10^{-4}$, where the first error is statistical and the second is systematic. This is the first measurement of ${\cal B}(D^{0} \to {\bar K}^{*0} \gamma)$.
 Thème(s) : Physique/Physique des Hautes Energies - Expérience
 Lien vers le texte intégral : http://fr.arXiv.org/abs/0808.1838
 in2p3-00335768, version 1 http://hal.in2p3.fr/in2p3-00335768 oai:hal.in2p3.fr:in2p3-00335768 Contributeur : Nicole Berger <> Soumis le : Jeudi 30 Octobre 2008, 14:44:01 Dernière modification le : Jeudi 30 Octobre 2008, 15:34:10