An angular analysis of B-0 --> J/psi K*(0) and B-s(0) --> J/psi phi has been used to determine the decay amplitudes with parity-even longitudinal (A(0)) and transverse (A(\ \)) polarization and parity-odd transverse (A1(-)) polarization. The measurements are based on 190 B-0 and 40 B-s(0) candidates obtained from 89 pb(-1) of (p) over barp collisions at the Fermilab Tevatron. The longitudinal decay amplitude dominates with \A(0)\(2) = 0.59 +/- 0.06 +/- 0.01 for B-0 and \A(0)\ (2) = 0.61 +/- 0.14 +/- 0.02 for B-s(0) decays. The parity-odd amplitude is found to be small with \A1(-)\(2) = 0.13(-0.09)(+0.12) +/- 0.06 for B-0 and \A1(-)\ = 0.23 +/- 0.19 +/- 0.04 for B-s(0) decays.

Measurement of the decay amplitudes of B-0 -> J/psi K*(0) and B-S(0) -> J/psi phi decays

BISELLO, DARIO;BUSETTO, GIOVANNI;LUCCHESI, DONATELLA;MARIOTTI, MOSE';ROSSIN, ROBERTO;
2000

Abstract

An angular analysis of B-0 --> J/psi K*(0) and B-s(0) --> J/psi phi has been used to determine the decay amplitudes with parity-even longitudinal (A(0)) and transverse (A(\ \)) polarization and parity-odd transverse (A1(-)) polarization. The measurements are based on 190 B-0 and 40 B-s(0) candidates obtained from 89 pb(-1) of (p) over barp collisions at the Fermilab Tevatron. The longitudinal decay amplitude dominates with \A(0)\(2) = 0.59 +/- 0.06 +/- 0.01 for B-0 and \A(0)\ (2) = 0.61 +/- 0.14 +/- 0.02 for B-s(0) decays. The parity-odd amplitude is found to be small with \A1(-)\(2) = 0.13(-0.09)(+0.12) +/- 0.06 for B-0 and \A1(-)\ = 0.23 +/- 0.19 +/- 0.04 for B-s(0) decays.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11577/2544682
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