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

(The BABAR Collaboration)

doi:10.1103/PhysRevLett.87.241801

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

(The BABAR Collaboration)

Research output: Contribution to journal › Article

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 language	English (US)
Pages (from-to)	241801-1-241801-7
Journal	Physical Review Letters
Volume	87
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.87.241801
Publication status	Published - Dec 10 2001
Externally published	Yes

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ASJC Scopus subject areas

Physics and Astronomy(all)

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(The BABAR Collaboration) (2001). Measurement of the B → J/ΨK^* (892) decay amplitudes. Physical Review Letters, 87(24), 241801-1-241801-7. https://doi.org/10.1103/PhysRevLett.87.241801

@article{7487825140d94e059ef1cdc1d02e8190,

title = "Measurement of the B → J/ΨK* (892) decay amplitudes",

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.",

author = "{(The BABAR Collaboration)} and B. Aubert and D. Boutigny and Gaillard, {J. M.} and A. Hicheur and Y. Karyotakis and Lees, {J. P.} and P. Robbe and V. Tisserand and A. Palano and Chen, {G. P.} and Chen, {J. C.} and Qi, {N. D.} and G. Rong and P. Wang and Zhu, {Y. S.} and G. Eigen and Reinertsen, {P. L.} and B. Stugu and B. Abbott and Abrams, {G. S.} and Borgland, {A. W.} and Breon, {A. B.} and Brown, {D. N.} and J. Button-Shafer and Cahn, {R. N.} and Clark, {A. R.} and Gill, {M. S.} and A. Gritsan and Y. Groysman and Jacobsen, {R. G.} and Kadel, {R. W.} and J. Kadyk and Kerth, {L. T.} and S. Kluth and Kolomensky, {Yu G.} and Kral, {J. F.} and C. LeClerc and Levi, {M. E.} and T. Liu and G. Lynch and Meyer, {A. B.} and M. Momayezi and Oddone, {P. J.} and A. Perazzo and M. Pripstein and Roe, {N. A.} and A. Romosan and Ronan, {M. T.} and Shelkov, {V. G.} and Varnes, {Erich W}",

year = "2001",

month = "12",

day = "10",

doi = "10.1103/PhysRevLett.87.241801",

language = "English (US)",

volume = "87",

pages = "241801--1--241801--7",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "24",

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TY - JOUR

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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UR - http://www.scopus.com/inward/citedby.url?scp=85039595460&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.87.241801

DO - 10.1103/PhysRevLett.87.241801

M3 - Article

AN - SCOPUS:85039595460

VL - 87

SP - 241801-1-241801-7

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 24

ER -

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10.1103/PhysRevLett.87.241801