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dc.contributor.authorLees, J. P.en_US
dc.contributor.authorPoireau, V.en_US
dc.contributor.authorPrencipe, E.en_US
dc.contributor.authorTisserand, V.en_US
dc.contributor.authorGarra Tico, J.en_US
dc.contributor.authorGrauges, E.en_US
dc.contributor.authorMartinelli, M.en_US
dc.contributor.authorIzen, Joseph M.en_US
dc.contributor.authorLou, Xinchouen_US
dc.contributor.authorBaBar Collaborationen_US
dc.date.accessioned2014-02-26T22:36:46Z
dc.date.available2014-02-26T22:36:46Z
dc.date.created2012-05-18en_US
dc.date.issued2012-05-18en_US
dc.identifier.issn1550-7998en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/3077
dc.description.abstractWe search for the rare decay of the D⁰ meson to two photons, D⁰ → γγ, and present a measurement of the branching fraction for a D⁰ meson decaying to two neutral pions, B(D⁰ → π⁰π⁰). The data sample analyzed corresponds to an integrated luminosity of 470.5 fb⁻¹ collected by the BABAR detector at the PEP-II asymmetric-energy e⁺e⁻ collider at SLAC. We place an upper limit on the branching fraction, B(D⁰ → γγ) < 2.2 × 10⁻⁶ at 90% confidence level. This limit improves on the existing limit by an order of magnitude. We also find B(D⁰→π⁰π⁰) = (8.4 ± 0.1 ± 0.4 ± 0.3) × 10⁻⁴.en_US
dc.language.isoen_USen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.urihttp://dx.doi.org/10.1103/PhysRevD.85.091107
dc.rights© 2012 American Physical Societyen_US
dc.sourcePhysical Review D - Particles, Fields, Gravitation and Cosmology
dc.subjectParticles (Nuclear physics)en_US
dc.subjectAstrophysicsen_US
dc.titleSearch for the Decay D⁰ → γγ and Measurement of the Branching Fraction for D⁰ → π⁰π⁰en_US
dc.typeTexten_US
dc.type.genreArticleen_US
dc.identifier.volume85en_US
dc.identifier.issue9en_US
dc.contributor.utdAuthorLou, Xinchouen_US
dc.contributor.utdAuthorIzen, Joseph M.en_US
dc.contributor.VIAF250674117 (Izen, JM)en_US
dc.contributor.VIAF250674117 (Izen, JM)


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