With the full BABAR data sample of 465 x 10(6) B (B) over bar pairs, we observe the decays B-+/- -> phi K-1(1270)(+/-) and B-+/- -> phi K-2*(1430)(+/-). We measure the branching fractions (6.1 +/- 1.6 +/- 1.1) x 10(-6) and (8.4 +/- 1.8 +/- 1.0) x 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-+/- -> phi K-0*(1430)(+/-) decay branching fraction of (7.0 +/- 1.3 +/- 0.9) x 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 phi and K-1(1400)(+/-), K*(1410)(+/-), K-2(1770)(+/-), or K-2(1820)(+/-). Understanding the observed polarization pattern requires amplitude contributions from an uncertain source.

Observation and Polarization Measurements of B-+/- -> phi K-1(+/-) and B-+/- -> phi K-2*(+/-)

BIANCHI, Fabrizio;GAMBA, Diego;PELLICCIONI, Mario;
2008-01-01

Abstract

With the full BABAR data sample of 465 x 10(6) B (B) over bar pairs, we observe the decays B-+/- -> phi K-1(1270)(+/-) and B-+/- -> phi K-2*(1430)(+/-). We measure the branching fractions (6.1 +/- 1.6 +/- 1.1) x 10(-6) and (8.4 +/- 1.8 +/- 1.0) x 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-+/- -> phi K-0*(1430)(+/-) decay branching fraction of (7.0 +/- 1.3 +/- 0.9) x 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 phi and K-1(1400)(+/-), K*(1410)(+/-), K-2(1770)(+/-), or K-2(1820)(+/-). Understanding the observed polarization pattern requires amplitude contributions from an uncertain source.
2008
101
161801
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B. Aubert;M. Bona;Y. Karyotakis;J. P. Lees;V. Poireau;E. Prencipe;X. Prudent;V. Tisserand;J. G. Tico;E. Grauges;L. Lopez;A. Palano;M. Pap...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/66944
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