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http://hdl.handle.net/2445/130863
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DC Field | Value | Language |
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dc.contributor.author | Garra Ticó, Jordi | - |
dc.contributor.author | Graugés Pous, Eugeni | - |
dc.contributor.author | BABAR Collaboration | - |
dc.date.accessioned | 2019-03-25T13:01:43Z | - |
dc.date.available | 2019-03-25T13:01:43Z | - |
dc.date.issued | 2012-05-18 | - |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.uri | http://hdl.handle.net/2445/130863 | - |
dc.description.abstract | We search for the rare decay of the D 0 meson to two photons, D 0 → γ γ , and present a measurement of the branching fraction for a D 0 meson decaying to two neutral pions, B ( D 0 → π 0 π 0 ) . 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 ( D 0 → γ γ ) < 2.2 × 10 − 6 , at 90% confidence level. This limit improves on the existing limit by an order of magnitude. We also find B ( D 0 → π 0 π 0 ) = ( 8.4 ± 0.1 ± 0.4 ± 0.3 ) × 10 − 4 . | - |
dc.format.extent | 8 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Physical Society | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.85.091107 | - |
dc.relation.ispartof | Physical Review D, 2012, vol. 85, num. 9, p. 091107(R) | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevD.85.091107 | - |
dc.rights | (c) American Physical Society, 2012 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Física de partícules | - |
dc.subject.classification | Experiments | - |
dc.subject.classification | Mesons (Física nuclear) | - |
dc.subject.other | Particle physics | - |
dc.subject.other | Experiments | - |
dc.subject.other | Mesons (Nuclear physics) | - |
dc.title | Search for the decay D0 → γγ and measurement of the branching fraction for D0 → π0π0 | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 654985 | - |
dc.date.updated | 2019-03-25T13:01:44Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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654985.pdf | 238.66 kB | Adobe PDF | View/Open |
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