Fitxers
Tipus de document
ArticleVersió
Versió publicadaData de publicació
Tots els drets reservats
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/139435
Measurement of the Branching Fractions of ¯¯¯B→D**ℓ−¯νℓ Decays in Events Tagged by a Fully Reconstructed B Meson
Títol de la revista
Director/Tutor
ISSN de la revista
Títol del volum
Recurs relacionat
Resum
We report a measurement of the branching fractions of ¯¯¯ B → D ** ℓ − ¯ ν ℓ decays based on 417 fb − 1 of data collected at the Υ ( 4 S ) resonance with the BABAR detector at the PEP-II e + e − storage rings. Events are selected by fully reconstructing one of the B mesons in a hadronic decay mode. A fit to the invariant mass differences m ( D ( * ) π ) − m ( D ( * ) ) is performed to extract the signal yields of the different D ** states. We observe the ¯¯¯ B → D ** ℓ − ¯ ν ℓ decay modes corresponding to the four D ** states predicted by heavy quark symmetry with a significance greater than 5 standard deviations including systematic uncertainties.
Matèries
Matèries (anglès)
Citació
Citació
GARRA TICÓ, Jordi, GRAUGÉS POUS, Eugeni and BABAR Collaboration. Measurement of the Branching Fractions of ¯¯¯B→D**ℓ−¯νℓ Decays in Events Tagged by a Fully Reconstructed B Meson. Physical Review Letters. 2008. Vol. 101, num. 26, pags. 261802. ISSN 0031-9007. [consulted: 19 of August of 2026]. Available at: https://hdl.handle.net/2445/139435