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Measurement of the B--> J/psiK*(892) decay amplitudes.
- Source :
-
Physical review letters [Phys Rev Lett] 2001 Dec 10; Vol. 87 (24), pp. 241801. Date of Electronic Publication: 2001 Nov 20. - Publication Year :
- 2001
-
Abstract
- We present a measurement of the decay amplitudes in B-->J/psiK*(892) channels using 20.7 fb(-1) of data collected at the Upsilon(4S) resonance with the BABAR detector at PEP-II. We measure a P-wave fraction R(perpendicular) = (16.0 +/- 3.2 +/- 1.4)% and a longitudinal polarization fraction (59.7 +/- 2.8 +/- 2.4)%. The measurement of a relative phase that is neither 0 nor pi, phi = 2.50 +/- 0.20 +/-0.08 radians, favors a departure from the factorization hypothesis. Although the decay B-->/psiK(pi) proceeds mainly via K*(892), there is also evidence for K2*(1430) and K(pi) S-wave contributions.
Details
- Language :
- English
- ISSN :
- 0031-9007
- Volume :
- 87
- Issue :
- 24
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 11736492
- Full Text :
- https://doi.org/10.1103/PhysRevLett.87.241801