Evidence is presented for the baryonic B meson decay B¯0→D0ΛΛ¯ based on a data sample of 471×106 BB¯ pairs collected with the BABAR detector at the PEP-II asymmetric e+e− collider located at the SLAC National Accelerator Laboratory. The branching fraction is determined to be ℬ(B¯0→D0ΛΛ¯)=(9.8+2.9−2.6±1.9)×10−6, corresponding to a significance of 3.4 standard deviations including additive systematic uncertainties. A search for the related baryonic B meson decay B¯0→D0Σ0Λ¯ with Σ0→Λγ is performed and an upper limit ℬ(B¯0→D0Σ0Λ¯+B¯0→D0ΛΣ¯0)<3.1×10−5 is determined at 90% confidence level.

Lees, J.P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2014). Evidence for the baryonic decay (B)over-bar(0) -> D-0 Lambda(Lambda)over-bar. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 89(11), 1-9 [10.1103/PhysRevD.89.112002].

Evidence for the baryonic decay (B)over-bar(0) -> D-0 Lambda(Lambda)over-bar

PATRIGNANI, CLAUDIA;
2014

Abstract

Evidence is presented for the baryonic B meson decay B¯0→D0ΛΛ¯ based on a data sample of 471×106 BB¯ pairs collected with the BABAR detector at the PEP-II asymmetric e+e− collider located at the SLAC National Accelerator Laboratory. The branching fraction is determined to be ℬ(B¯0→D0ΛΛ¯)=(9.8+2.9−2.6±1.9)×10−6, corresponding to a significance of 3.4 standard deviations including additive systematic uncertainties. A search for the related baryonic B meson decay B¯0→D0Σ0Λ¯ with Σ0→Λγ is performed and an upper limit ℬ(B¯0→D0Σ0Λ¯+B¯0→D0ΛΣ¯0)<3.1×10−5 is determined at 90% confidence level.
2014
Lees, J.P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2014). Evidence for the baryonic decay (B)over-bar(0) -> D-0 Lambda(Lambda)over-bar. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 89(11), 1-9 [10.1103/PhysRevD.89.112002].
Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Brown, D. N.; Kerth, L. T.; Kolomensky, Yu. G.; Lee, M. J.; Ly...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/535472
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