corner
corner

Phys. Rev. Lett. 87, 241801 (2001) [7 pages]

Measurement of the B → J/ψK*(892) Decay Amplitudes

Download: PDF (232 kB) Buy this article Export: BibTeX or EndNote (RIS)

B. Aubert et al. (The BABAR Collaboration)
Show All Authors/Affiliations

Received 20 July 2001; published 20 November 2001

We present a measurement of the decay amplitudes in BJ/ψK*(892) channels using 20.7 fb-1 of data collected at the ϒ(4S) resonance with the BABAR detector at PEP-II. We measure a P-wave fraction R = (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 π, φ = 2.50±0.20±0.08 radians, favors a departure from the factorization hypothesis. Although the decay BJ/ψKπ proceeds mainly via K*(892), there is also evidence for K2*(1430) and Kπ S-wave contributions.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.87.241801
DOI:
10.1103/PhysRevLett.87.241801
PACS:
13.25.Hw, 11.30.Er, 12.15.Hh