Study of J/ψ and ψ(3686) decay to ΛΛ ̄ and Σ0Σ ̄0 final states

(BESIII Collaboration)

doi:10.1103/PhysRevD.95.052003

Study of J/ψ and ψ(3686) decay to ΛΛ ̄ and Σ0Σ ̄0 final states

(BESIII Collaboration)

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

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."

Lingua originale	Inglese
Numero di articolo	052003
Rivista	Physical Review D
Volume	95
Numero di pubblicazione	5
DOI	https://doi.org/10.1103/PhysRevD.95.052003
Stato di pubblicazione	Pubblicato - mar 2017
Pubblicato esternamente	Sì

Accesso al documento

10.1103/PhysRevD.95.052003

Altri file e collegamenti

Link to publication in Scopus

Cita questo

@article{e282d17bfd754b67923a31c606f7ffd0,

title = "Study of J/ψ and ψ(3686) decay to ΛΛ{\= } and Σ0Σ{\= }0 final states",

abstract = "Using 1310.6{\texttimes}106 J/ψ and 447.9{\texttimes}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.{"}",

author = "\{(BESIII Collaboration)\} and M. Ablikim and Achasov, \{M. N.\} and S. Ahmed and M. Albrecht and A. Amoroso and An, \{F. F.\} and Q. An and Bai, \{J. Z.\} and Y. Bai and O. Bakina and \{Baldini Ferroli\}, R. and Y. Ban and Bennett, \{D. W.\} and Bennett, \{J. V.\} and N. Berger and M. Bertani and D. Bettoni and Bian, \{J. M.\} and F. Bianchi and E. Boger and I. Boyko and Briere, \{R. A.\} and H. Cai and X. Cai and O. Cakir and A. Calcaterra and Cao, \{G. F.\} and Cetin, \{S. A.\} and J. Chai and Chang, \{J. F.\} and G. Chelkov and G. Chen and Chen, \{H. S.\} and Chen, \{J. C.\} and Chen, \{M. L.\} and Chen, \{S. J.\} and Chen, \{X. R.\} and Chen, \{Y. B.\} and Chu, \{X. K.\} and G. Cibinetto and Dai, \{H. L.\} and Dai, \{J. P.\} and A. Dbeyssi and D. Dedovich and Deng, \{Z. Y.\} and A. Denig and I. Denysenko and M. Destefanis and \{De Mori\}, F. and Y. Ding",

note = "Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = mar,

doi = "10.1103/PhysRevD.95.052003",

language = "English",

volume = "95",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "5",

}

TY - JOUR

T1 - Study of J/ψ and ψ(3686) decay to ΛΛ ̄ and Σ0Σ ̄0 final states

AU - (BESIII 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 - De Mori, F.

AU - Ding, Y.

PY - 2017/3

Y1 - 2017/3

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."

UR - https://www.scopus.com/pages/publications/85019833030

U2 - 10.1103/PhysRevD.95.052003

DO - 10.1103/PhysRevD.95.052003

M3 - Article

SN - 2470-0010

VL - 95

JO - Physical Review D

JF - Physical Review D

IS - 5

M1 - 052003

ER -

Study of J/ψ and ψ(3686) decay to ΛΛ ̄ and Σ0Σ ̄0 final states

Abstract

Accesso al documento

Altri file e collegamenti

Fingerprint

Cita questo