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

(The BABAR Collaboration)

Research output: Contribution to journalArticle

Abstract

We present a measurement of the decay amplitudes in B → J/ΨK* 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, ψ = 2.50°0.20°0.08 radians, favors a departure from the factorization hypothesis. Although the decay B → J/ΨKπ proceeds mainly via K*(892), there is also evidence for K* 2(1430) and KπS-wave contributions.

Original languageEnglish (US)
Pages (from-to)241801-1-241801-7
JournalPhysical Review Letters
Volume87
Issue number24
DOIs
StatePublished - Dec 10 2001
Externally publishedYes

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decay
P waves
factorization
detectors
polarization

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  • Physics and Astronomy(all)

Cite this

Measurement of the B → J/ΨK* (892) decay amplitudes. / (The BABAR Collaboration).

In: Physical Review Letters, Vol. 87, No. 24, 10.12.2001, p. 241801-1-241801-7.

Research output: Contribution to journalArticle

(The BABAR Collaboration). / Measurement of the B → J/ΨK* (892) decay amplitudes. In: Physical Review Letters. 2001 ; Vol. 87, No. 24. pp. 241801-1-241801-7.
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abstract = "We present a measurement of the decay amplitudes in B → J/ΨK* 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, ψ‖ = 2.50°0.20°0.08 radians, favors a departure from the factorization hypothesis. Although the decay B → J/ΨKπ proceeds mainly via K*(892), there is also evidence for K* 2(1430) and KπS-wave contributions.",
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T1 - Measurement of the B → J/ΨK* (892) decay amplitudes

AU - (The BABAR Collaboration)

AU - Aubert, B.

AU - Boutigny, D.

AU - Gaillard, J. M.

AU - Hicheur, A.

AU - Karyotakis, Y.

AU - Lees, J. P.

AU - Robbe, P.

AU - Tisserand, V.

AU - Palano, A.

AU - Chen, G. P.

AU - Chen, J. C.

AU - Qi, N. D.

AU - Rong, G.

AU - Wang, P.

AU - Zhu, Y. S.

AU - Eigen, G.

AU - Reinertsen, P. L.

AU - Stugu, B.

AU - Abbott, B.

AU - Abrams, G. S.

AU - Borgland, A. W.

AU - Breon, A. B.

AU - Brown, D. N.

AU - Button-Shafer, J.

AU - Cahn, R. N.

AU - Clark, A. R.

AU - Gill, M. S.

AU - Gritsan, A.

AU - Groysman, Y.

AU - Jacobsen, R. G.

AU - Kadel, R. W.

AU - Kadyk, J.

AU - Kerth, L. T.

AU - Kluth, S.

AU - Kolomensky, Yu G.

AU - Kral, J. F.

AU - LeClerc, C.

AU - Levi, M. E.

AU - Liu, T.

AU - Lynch, G.

AU - Meyer, A. B.

AU - Momayezi, M.

AU - Oddone, P. J.

AU - Perazzo, A.

AU - Pripstein, M.

AU - Roe, N. A.

AU - Romosan, A.

AU - Ronan, M. T.

AU - Shelkov, V. G.

AU - Varnes, Erich W

PY - 2001/12/10

Y1 - 2001/12/10

N2 - We present a measurement of the decay amplitudes in B → J/ΨK* 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, ψ‖ = 2.50°0.20°0.08 radians, favors a departure from the factorization hypothesis. Although the decay B → J/ΨKπ proceeds mainly via K*(892), there is also evidence for K* 2(1430) and KπS-wave contributions.

AB - We present a measurement of the decay amplitudes in B → J/ΨK* 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, ψ‖ = 2.50°0.20°0.08 radians, favors a departure from the factorization hypothesis. Although the decay B → J/ΨKπ proceeds mainly via K*(892), there is also evidence for K* 2(1430) and KπS-wave contributions.

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DO - 10.1103/PhysRevLett.87.241801

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JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

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