Measurement of the B-->J/psi K*(892) Decay Amplitudes

Technical Report · Thu Oct 04 00:00:00 EDT 2001

DOI:https://doi.org/10.2172/798865· OSTI ID:798865

Bernard, Denis ^[1]

---

1. SLAC

The authors present a measurement of the decay amplitudes in B {yields} J/{psi} K*(892) channels using 20.7 fb{sup -1} of data collected at the {Upsilon}(4S) resonance with the BABAR detector at PEP-II. They 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}, {psi}{parallel} = 2.50 {+-} 0.20 {+-} 0.08 radians, favors a departure from the factorization hypothesis. Although the decay B {yields} J/{psi} K{pi} proceeds mainly via K*(892), there is also evidence for K*{sub 2}(1430) and K{pi} S-wave contributions.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 798865
• Report Number(s): SLAC-PUB-8898
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
DECAY AMPLITUDES
FACTORIZATION
HADRONIC PARTICLE DECAY
K*-892 MESONS
K*2-1430 MESONS
POLARIZATION
RESONANCE