With the full BABAR data sample of 465×106 BB̄ pairs, we observe the decays B±→φK1(1270)± and B±→φK2 *(1430)±. We measure the branching fractions (6.1±1.6±1. 1)×10-6 and (8.4±1.8±1.0)×10-6 and the fractions of longitudinal polarization 0.46-0.13-0.07+0.12+0.06 and 0.80-0.10+0.09±0. 03, respectively. We also report on the B±→φK0*(1430) ± decay branching fraction of (7.0±1.3±0.9)×10-6 and several parameters sensitive to CP violation and interference in the above three decays. Upper limits are placed on the B± decay rates to final states with φ and K1(1400)±, K*(1410)±, K2(1770)±, or K2(1820)±. Understanding the observed polarization pattern requires amplitude contributions from an uncertain source. © 2008 The American Physical Society.

Aubert, B., Bona, M., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., et al. (2008). Observation and polarization measurements of B±→φK1± and B±→φK2*±. PHYSICAL REVIEW LETTERS, 101(16), 1-7 [10.1103/PhysRevLett.101.161801].

Observation and polarization measurements of B±→φK1± and B±→φK2*±

PATRIGNANI, CLAUDIA;
2008

Abstract

With the full BABAR data sample of 465×106 BB̄ pairs, we observe the decays B±→φK1(1270)± and B±→φK2 *(1430)±. We measure the branching fractions (6.1±1.6±1. 1)×10-6 and (8.4±1.8±1.0)×10-6 and the fractions of longitudinal polarization 0.46-0.13-0.07+0.12+0.06 and 0.80-0.10+0.09±0. 03, respectively. We also report on the B±→φK0*(1430) ± decay branching fraction of (7.0±1.3±0.9)×10-6 and several parameters sensitive to CP violation and interference in the above three decays. Upper limits are placed on the B± decay rates to final states with φ and K1(1400)±, K*(1410)±, K2(1770)±, or K2(1820)±. Understanding the observed polarization pattern requires amplitude contributions from an uncertain source. © 2008 The American Physical Society.
2008
Aubert, B., Bona, M., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., et al. (2008). Observation and polarization measurements of B±→φK1± and B±→φK2*±. PHYSICAL REVIEW LETTERS, 101(16), 1-7 [10.1103/PhysRevLett.101.161801].
Aubert, B; Bona, M.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Lopez, L.; Palano...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/548081
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