We present a measurement of the decay amplitudes in B --> J/psiK*(892) channels using 20.7 fb(-1) of data collected at the Y(4S) resonance with the BABAR detector at PEP-H. We measure a P-wave fraction R-perpendicular to = (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 (parallel to) = 2.50 +/- 0.20 +/- 0.08 radians, favors a departure from the factorization hypothesis. Although the decay B --> J/psiK pi proceeds mainly via K*(892), there is also evidence for K-2*(1430) and K pi S-wave contributions.

Aubert, B., Boutigny, D., Gaillard, J., Hicheur, A., Karyotakis, Y., Lees, J., et al. (2001). Measurement of the B → J/ψK*(892) decay amplitudes. PHYSICAL REVIEW LETTERS, 87(24) [10.1103/PhysRevLett.87.241801].

Measurement of the B → J/ψK*(892) decay amplitudes

CARPINELLI, Massimo;
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 Y(4S) resonance with the BABAR detector at PEP-H. We measure a P-wave fraction R-perpendicular to = (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 (parallel to) = 2.50 +/- 0.20 +/- 0.08 radians, favors a departure from the factorization hypothesis. Although the decay B --> J/psiK pi proceeds mainly via K*(892), there is also evidence for K-2*(1430) and K pi S-wave contributions.
Articolo in rivista - Articolo scientifico
BABAR detector
English
2001
B. Aubert et al. (The BABAR Collaboration)
Aubert, B., Boutigny, D., Gaillard, J., Hicheur, A., Karyotakis, Y., Lees, J., et al. (2001). Measurement of the B → J/ψK*(892) decay amplitudes. PHYSICAL REVIEW LETTERS, 87(24) [10.1103/PhysRevLett.87.241801].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390068
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