Observation of B Meson Decays to Omegapi+, OmegaK+, and OmegaK0
Observation of B Meson Decays to Omegapi+, OmegaK+, and OmegaK0

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Published: 2003

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The authors present preliminary measurements of B meson decays to B[sup+][yields][omega][pi][sup+], B[sup+][yields][omega]K[sup+], and B[sup 0][yields][omega]K[sup 0]. The data were recorded with the BABAR detector and correspond to 88.9 x 10[sup 6] B[bar B] pairs produced in e[sup+]e[sup -] annihilation at the[Upsilon](4S) resonance. They find statistically significant signals for all three channels:[Beta](B[sup+][yields][omega][pi][sup+])= (5.4[+-] 1.0[+-] 0.5) x 10[sup -6], [Beta](B[sup+][yields][omega]K[sup+])= (5.0[+-] 1.0[+-] 0.4) x 10[sup -6], and[Beta](B[sup 0][yields][omega]K[sup 0])= (5.3[sub -1.2][sup+1.4][+-] 0.5) x 10[sup -6]. They also measure time-integrated charge asymmetries[Alpha][sub ch](B[sup+][yields][omega][pi][sup+])= 0.04[+-] 0.17[+-] 0.01 and[Alpha][sub ch](B[sup+][yields][omega]K[sup+])= -0.05[+-] 0.16[+-] 0.01.

Observation of B Meson Decays to OmegaK* and Improved Measurements for Omegarho and Omegaf0
Observation of B Meson Decays to OmegaK* and Improved Measurements for Omegarho and Omegaf0

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Published: 2009

Total Pages: 8

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We present measurements of B meson decays to the final states [omega]K*, [omega][rho], and [omega]f0, where K* indicates a spin 0, 1, or 2 strange meson. The data sample corresponds to 465 x 106 B{bar B} pairs collected with the BABAR detector at the PEP-II ee− collider at SLAC. B meson decays involving vector-scalar, vector-vector, and vector-tensor final states are analyzed; the latter two shed new light on the polarization of these final states. We measure the branching fractions for nine of these decays; five are observed for the first time. For most decays we also measure the charge asymmetry and, where relevant, the longitudinal polarization f{sub L}.

Observation of B Meson Decays to Eta Pi and Eta K.
Observation of B Meson Decays to Eta Pi and Eta K.

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Published: 2003

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The authors present preliminary measurements of the B meson decays B[sup+][yields][eta][pi][sup+], B[sup+][yields][eta]K[sup+], and B[sup 0][yields][eta]K[sup 0]. The data were recorded with the BABAR detector at PEP II and correspond to 88.9 x 10[sup 6] B[bar B] pairs produced in e[sup+]e[sup -] annihilation through the[Upsilon](4S) resonance. They find the branching fractions[Beta](B[sup+][yields][eta][pi][sup+])= (4.2[sub -0.9][sup+1.0][+-] 0.3) x 10[sup -6] and[Beta](B[sup+][yields][eta]K[sup+])= (2.8[sub -0.7][sup+0.8][+-] 0.2) x 10[sup -6]. They set a 90% CL upper limit of[Beta](B[sup 0][yields][eta]K[sup 0])

Observation and Study of the Baryonic B-meson Decays B to D(*) P Pbar??
Observation and Study of the Baryonic B-meson Decays B to D(*) P Pbar??

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Published: 2012

Total Pages: 24

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We present results for B-meson decay modes involving a charm meson, protons, and pions using 455 x 106 B{bar B} pairs recorded by the BABAR detector at the SLAC PEP-II asymmetric-energy ee− collider. The branching fractions are measured for the following ten decays: {bar B}° → D°p{bar p}, {bar B}° → D*°p{bar p}, {bar B}° → D+p{bar p}?−, {bar B}° → D*+p{bar p}?−, B− → D°p{bar p}?−, B− → D*°pp?−, {bar B}° → D°p{bar p}?−?+, {bar B}° → D*°p{bar p}?−?+, B− → D+p{bar p}?−?−, and B− → D*+p{bar p}?−?−. The four B− and the two five-body B° modes are observed for the first time. The four-body modes are enhanced compared to the three- and the five-body modes. In the three-body modes, the M(p{bar p}) and M(D{sup (*)0}p) invariant mass distributions show enhancements near threshold values. In the four-body mode {bar B}° → D+p{bar p}?−, the M(p?−) distribution shows a narrow structure of unknown origin near 1.5GeV/c2. The distributions for the five-body modes, in contrast to the others, are similar to the expectations from uniform phase-space predictions.