We report on a Dalitz plot analysis of B- -> D+pi(-)pi(-) decays, based on a sample of about 383 x 10(6) Y(4S) -> B (B) over bar decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We find the total branching fraction of the three-body decay: B(B- -> D+ pi(-)pi(-)) = (1.08 +/- 0.03 +/- 0.05) x 10(-3). We observe the established D-2*(0) and confirm the existence of D-0*(0) in their decays to D+pi(-), where the D-2*(0) and D-0*(0) are the 2(+) and 0(+) c (u) over bar P-wave states, respectively. We measure the masses and widths of D-2*(0) and D-0*(0) to be: m(D2)*(0) = (2460.4 +/- 1.2 +/- 1.2 +/- 1.9) MeV/c(2), Gamma(D2*0) = (41.8 +/- 2.5 +/- 2.1 +/- 2.0) MeV, m(D0*0) = (2297 +/- 8 +/- 5 +/- 19) MeV/c(2), and Gamma(D0*0) = (273 +/- 12 +/- 17 +/- 45) MeV. The stated errors reflect the statistical and systematic uncertainties, and the uncertainty related to the assumed composition of signal events and the theoretical model.

Dalitz plot analysis of B- -> D+pi(-)pi(-) / 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., Jacobsen, R.G., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 79:11(2009), pp. 112004-112004. [10.1103/physrevd.79.112004]

Dalitz plot analysis of B- -> D+pi(-)pi(-)

CAVOTO, Gianluca;FACCINI, Riccardo;FERRONI, Fernando;GASPERO, Mario;C. Voena;
2009

Abstract

We report on a Dalitz plot analysis of B- -> D+pi(-)pi(-) decays, based on a sample of about 383 x 10(6) Y(4S) -> B (B) over bar decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We find the total branching fraction of the three-body decay: B(B- -> D+ pi(-)pi(-)) = (1.08 +/- 0.03 +/- 0.05) x 10(-3). We observe the established D-2*(0) and confirm the existence of D-0*(0) in their decays to D+pi(-), where the D-2*(0) and D-0*(0) are the 2(+) and 0(+) c (u) over bar P-wave states, respectively. We measure the masses and widths of D-2*(0) and D-0*(0) to be: m(D2)*(0) = (2460.4 +/- 1.2 +/- 1.2 +/- 1.9) MeV/c(2), Gamma(D2*0) = (41.8 +/- 2.5 +/- 2.1 +/- 2.0) MeV, m(D0*0) = (2297 +/- 8 +/- 5 +/- 19) MeV/c(2), and Gamma(D0*0) = (273 +/- 12 +/- 17 +/- 45) MeV. The stated errors reflect the statistical and systematic uncertainties, and the uncertainty related to the assumed composition of signal events and the theoretical model.
2009
01 Pubblicazione su rivista::01a Articolo in rivista
Dalitz plot analysis of B- -> D+pi(-)pi(-) / 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., Jacobsen, R.G., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 79:11(2009), pp. 112004-112004. [10.1103/physrevd.79.112004]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/227516
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