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Observation and polarization measurements of B+/- -->phiK1 +/- and B +/- -->phiK2 *+/- |
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| Authors: | 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 A Pappagallo M Eigen G Stugu B Sun L Abrams G S Battaglia M Brown D N Cahn R N Jacobsen R G Kerth L T Kolomensky Yu G Kukartsev G Lynch G Osipenkov I L Ronan M T Tackmann K Tanabe T Hawkes C M Soni N Watson A T Koch H Schroeder T Walker D Asgeirsson D J Fulsom B G Hearty C Mattison T S McKenna J A Barrett M Khan A Teodorescu L Blinov V E Bukin A D Buzykaev A R Druzhinin V P Golubev V B Onuchin A P Serednyakov S I Skovpen Yu I Solodov E P Todyshev K Yu Bondioli M Curry S |
| Affiliation: | Laboratoire de Physique des Particules, IN2P3/CNRS et Université de Savoie, F-74941 Annecy-Le-Vieux, France. |
| Abstract: | With the full BABAR data sample of 465 x 10(6) B(over)B pairs, we observe the decays B+/- -->phiK_(1)(1270) +/- and B +/- -->phiK*_(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 (+0.12+0.06) _(-0.13-0.07) and 0.80(+0.09)_(-0.10)+/-0.03, respectively. We also report on the B+/- -->phiK*_(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)+/-, K2(1770)+/-, or K_2(1820)+/-. Understanding the observed polarization pattern requires amplitude contributions from an uncertain source. |
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