Research output: Contribution to journal › Article › peer-review
Study of J/ψ and ψ(3686) decay to ΛΛ¯ and Σ0Σ¯0 final states. / The BELLE collaboration.
In: Physical Review D, Vol. 95, No. 5, 052003, 15.03.2017.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Study of J/ψ and ψ(3686) decay to ΛΛ¯ and Σ0Σ¯0 final states
AU - The BELLE collaboration
AU - Ablikim, M.
AU - Achasov, M. N.
AU - Ahmed, S.
AU - Albrecht, M.
AU - Amoroso, A.
AU - An, F. F.
AU - An, Q.
AU - Bai, J. Z.
AU - Bai, Y.
AU - Bakina, O.
AU - Baldini Ferroli, R.
AU - Ban, Y.
AU - Bennett, D. W.
AU - Bennett, J. V.
AU - Berger, N.
AU - Bertani, M.
AU - Bettoni, D.
AU - Bian, J. M.
AU - Bianchi, F.
AU - Boger, E.
AU - Boyko, I.
AU - Briere, R. A.
AU - Cai, H.
AU - Cai, X.
AU - Cakir, O.
AU - Calcaterra, A.
AU - Cao, G. F.
AU - Cetin, S. A.
AU - Chai, J.
AU - Chang, J. F.
AU - Chelkov, G.
AU - Chen, G.
AU - Chen, H. S.
AU - Chen, J. C.
AU - Chen, M. L.
AU - Chen, S. J.
AU - Chen, X. R.
AU - Chen, Y. B.
AU - Chu, X. K.
AU - Cibinetto, G.
AU - Dai, H. L.
AU - Dai, J. P.
AU - Dbeyssi, A.
AU - Dedovich, D.
AU - Deng, Z. Y.
AU - Denig, A.
AU - Denysenko, I.
AU - Destefanis, M.
AU - Muchnoi, N. Yu
AU - Nikolaev, I. B.
N1 - Publisher Copyright: © 2017 American Physical Society.
PY - 2017/3/15
Y1 - 2017/3/15
N2 - Using 1310.6×106 J/ψ and 447.9×106 ψ(3686) events collected with the BESIII detector at the BEPCII e+e- collider, the branching fractions and the angular distributions of J/ψ and ψ(3686) decays to ΛΛand Σ0Σ-0 final states are measured. The branching fractions are determined, with much improved precision, to be 19.43±0.03±0.33, 11.64±0.04±0.23, 3.97±0.02±0.12 and 2.44±0.03±0.11 for J/ψ→ΛΛ-, J/ψ→Σ0Σ-0, ψ(3686)→ΛΛand ψ(3686)→Σ0Σ-0, respectively. The polar angular distributions of ψ(3686) decays are measured for the first time, while those of J/ψ decays are measured with much improved precision. In addition, the ratios of branching fractions B(ψ(3686)→ΛΛ-)B(J/ψ→ΛΛ-) and B(ψ(3686)→Σ0Σ-0)B(J/ψ→Σ0Σ-0) are determined to test the "12% rule."
AB - Using 1310.6×106 J/ψ and 447.9×106 ψ(3686) events collected with the BESIII detector at the BEPCII e+e- collider, the branching fractions and the angular distributions of J/ψ and ψ(3686) decays to ΛΛand Σ0Σ-0 final states are measured. The branching fractions are determined, with much improved precision, to be 19.43±0.03±0.33, 11.64±0.04±0.23, 3.97±0.02±0.12 and 2.44±0.03±0.11 for J/ψ→ΛΛ-, J/ψ→Σ0Σ-0, ψ(3686)→ΛΛand ψ(3686)→Σ0Σ-0, respectively. The polar angular distributions of ψ(3686) decays are measured for the first time, while those of J/ψ decays are measured with much improved precision. In addition, the ratios of branching fractions B(ψ(3686)→ΛΛ-)B(J/ψ→ΛΛ-) and B(ψ(3686)→Σ0Σ-0)B(J/ψ→Σ0Σ-0) are determined to test the "12% rule."
KW - BARYON
KW - ANNIHILATION
UR - http://www.scopus.com/inward/record.url?scp=85019833030&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.95.052003
DO - 10.1103/PhysRevD.95.052003
M3 - Article
VL - 95
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 5
M1 - 052003
ER -
ID: 10189890