We report a measurement of the branching fractions of B -> D**l(-)(v) over bar (l) decays based on 417 fb(-1) of data collected at the Y(4S) 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-(*())pi) - (m(D-(*())) is performed to extract the signal yields of the different D** states. We observe the (B) over bar -> D**l(-)(v) over bar (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.

Measurement of the Branching Fractions of (B)over-bar -> D**l(-)(v)over-bar(l) Decays in Events Tagged by a Fully Reconstructed B Meson / Aubert, B., Bona, M., Karyotakis, Y., Lees, J.p., Poireau, V., Prencipe, E., Prudent, X., Tisserand, V., Tico, J.g., Grauges, E., Lopez, L., Palano, A., Pappagallo, M., Eigen, G., Stugu, B., Sun, L., Abrams, G.s., Battaglia, M., Brown, D.n., Cahn, R.n., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 101:26(2008). [10.1103/physrevlett.101.261802]

Measurement of the Branching Fractions of (B)over-bar -> D**l(-)(v)over-bar(l) Decays in Events Tagged by a Fully Reconstructed B Meson

CAVOTO, Gianluca;DEL RE, Daniele;FACCINI, Riccardo;FERRONI, Fernando;GASPERO, Mario;VOENA C;
2008

Abstract

We report a measurement of the branching fractions of B -> D**l(-)(v) over bar (l) decays based on 417 fb(-1) of data collected at the Y(4S) 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-(*())pi) - (m(D-(*())) is performed to extract the signal yields of the different D** states. We observe the (B) over bar -> D**l(-)(v) over bar (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.
2008
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the Branching Fractions of (B)over-bar -> D**l(-)(v)over-bar(l) Decays in Events Tagged by a Fully Reconstructed B Meson / Aubert, B., Bona, M., Karyotakis, Y., Lees, J.p., Poireau, V., Prencipe, E., Prudent, X., Tisserand, V., Tico, J.g., Grauges, E., Lopez, L., Palano, A., Pappagallo, M., Eigen, G., Stugu, B., Sun, L., Abrams, G.s., Battaglia, M., Brown, D.n., Cahn, R.n., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 101:26(2008). [10.1103/physrevlett.101.261802]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/225599
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