Measurements of the branching fractions of ψ (3686) → ς ¯ 0 Λ+ c. c. And χcJ (J=0,1,2) → Λ Λ ¯

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Measurements of the branching fractions of ψ (3686) → ς ¯ 0 Λ+ c. c. And χcJ (J=0,1,2) → Λ Λ ¯. / BESIII Collaboration.

In: Physical Review D, Vol. 103, No. 11, 112004, 01.06.2021.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{57126d4f39974ce585e07335f2a9adf5,

title = "Measurements of the branching fractions of ψ (3686) → ς ¯ 0 Λ+ c. c. And χcJ (J=0,1,2) → Λ Λ ¯",

abstract = "Based on 4.481×108 ψ(3686) events collected with the BESIII detector at BEPCII, the branching fraction of the isospin violating decay ψ(3686)→ς¯0Λ+c.c. is measured to be (1.60±0.31±0.13±0.58)×10-6, where the first uncertainty is statistical, the second is systematic, and the third is the uncertainty arising from interference with the continuum. This result is significantly smaller than the measurement based on CLEO-c data sets. The decays χcJ→ΛΛ¯ are measured via ψ(3686)→γχcJ, and the branching fractions are determined to be B(χc0→ΛΛ¯)=(3.64±0.10±0.10±0.07)×10-4, B(χc1→ΛΛ¯)=(1.31±0.06±0.06±0.03)×10-4, B(χc2→ΛΛ¯)=(1.91±0.08±0.17±0.04)×10-4, where the third uncertainties are systematic due to the ψ(3686)→γχcJ branching fractions.",

author = "{BESIII Collaboration} and M. Ablikim and Achasov, {M. N.} and P. Adlarson and S. Ahmed and M. Albrecht and R. Aliberti and A. Amoroso and An, {M. R.} and Q. An and Bai, {X. H.} and Y. Bai and O. Bakina and Ferroli, {R. Baldini} and I. Balossino and Y. Ban and K. Begzsuren and N. Berger and M. Bertani and D. Bettoni and F. Bianchi and J. Bloms and A. Bortone and I. Boyko and Briere, {R. A.} and H. Cai and X. Cai and A. Calcaterra and Cao, {G. F.} and N. Cao and Cetin, {S. A.} and Chang, {J. F.} and Chang, {W. L.} and G. Chelkov and Chen, {D. Y.} and G. Chen and Chen, {H. S.} and Chen, {M. L.} and Chen, {S. J.} and Chen, {X. R.} and Chen, {Y. B.} and Chen, {Z. J.} and Cheng, {W. S.} and G. Cibinetto and F. Cossio and Cui, {X. F.} and Dai, {H. L.} and Dai, {X. C.} and A. Dbeyssi and Muchnoi, {N. Yu} and Nikolaev, {I. B.}",

note = "Funding Information: The BESIII collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Research and Development Program of China under Contracts No. 2020YFA0406300, No. 2020YFA0406400; National Natural Science Foundation of China (NSFC) under Contracts No. 11875115, No. 11625523, No. 11635010, No. 11735014, No. 11822506, No. 11835012, No. 11935015, No. 11935016, No. 11935018, No. 11961141012; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. U1732263, No. U1832207, No. U2032110; CAS Key Research Program of Frontier Sciences under Contracts No. QYZDJ-SSW-SLH003, No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; Institute of Nuclear and Particle Physics (INPAC) and Shanghai Key Laboratory for Particle Physics and Cosmology; ERC under Contract No. 758462; European Union Horizon 2020 research and innovation programme under Contract No. Marie Sklodowska-Curie grant agreement No. 894790; German Research Foundation DFG under Contracts No. 443159800, Collaborative Research Center CRC 1044, FOR 2359, FOR 2359, GRK 214; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Science and Technology fund; Olle Engkvist Foundation under Contract No. 200-0605; STFC (United Kingdom); The Knut and Alice Wallenberg Foundation (Sweden) under Contract No. 2016.0157; The Royal Society, UK under Contracts No. DH140054, No. DH160214; The Swedish Research Council; U.S. Department of Energy under Contracts No. DE-FG02-05ER41374, No. DE-SC-0012069. Publisher Copyright: {\textcopyright} 2021 authors. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",

year = "2021",

month = jun,

day = "1",

doi = "10.1103/PhysRevD.103.112004",

language = "English",

volume = "103",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "AMER PHYSICAL SOC",

number = "11",

}

RIS

TY - JOUR

T1 - Measurements of the branching fractions of ψ (3686) → ς ¯ 0 Λ+ c. c. And χcJ (J=0,1,2) → Λ Λ ¯

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Adlarson, P.

AU - Ahmed, S.

AU - Albrecht, M.

AU - Aliberti, R.

AU - Amoroso, A.

AU - An, M. R.

AU - An, Q.

AU - Bai, X. H.

AU - Bai, Y.

AU - Bakina, O.

AU - Ferroli, R. Baldini

AU - Balossino, I.

AU - Ban, Y.

AU - Begzsuren, K.

AU - Berger, N.

AU - Bertani, M.

AU - Bettoni, D.

AU - Bianchi, F.

AU - Bloms, J.

AU - Bortone, A.

AU - Boyko, I.

AU - Briere, R. A.

AU - Cai, H.

AU - Cai, X.

AU - Calcaterra, A.

AU - Cao, G. F.

AU - Cao, N.

AU - Cetin, S. A.

AU - Chang, J. F.

AU - Chang, W. L.

AU - Chelkov, G.

AU - Chen, D. Y.

AU - Chen, G.

AU - Chen, H. S.

AU - Chen, M. L.

AU - Chen, S. J.

AU - Chen, X. R.

AU - Chen, Y. B.

AU - Chen, Z. J.

AU - Cheng, W. S.

AU - Cibinetto, G.

AU - Cossio, F.

AU - Cui, X. F.

AU - Dai, H. L.

AU - Dai, X. C.

AU - Dbeyssi, A.

AU - Muchnoi, N. Yu

AU - Nikolaev, I. B.

N1 - Funding Information: The BESIII collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Research and Development Program of China under Contracts No. 2020YFA0406300, No. 2020YFA0406400; National Natural Science Foundation of China (NSFC) under Contracts No. 11875115, No. 11625523, No. 11635010, No. 11735014, No. 11822506, No. 11835012, No. 11935015, No. 11935016, No. 11935018, No. 11961141012; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. U1732263, No. U1832207, No. U2032110; CAS Key Research Program of Frontier Sciences under Contracts No. QYZDJ-SSW-SLH003, No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; Institute of Nuclear and Particle Physics (INPAC) and Shanghai Key Laboratory for Particle Physics and Cosmology; ERC under Contract No. 758462; European Union Horizon 2020 research and innovation programme under Contract No. Marie Sklodowska-Curie grant agreement No. 894790; German Research Foundation DFG under Contracts No. 443159800, Collaborative Research Center CRC 1044, FOR 2359, FOR 2359, GRK 214; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Science and Technology fund; Olle Engkvist Foundation under Contract No. 200-0605; STFC (United Kingdom); The Knut and Alice Wallenberg Foundation (Sweden) under Contract No. 2016.0157; The Royal Society, UK under Contracts No. DH140054, No. DH160214; The Swedish Research Council; U.S. Department of Energy under Contracts No. DE-FG02-05ER41374, No. DE-SC-0012069. Publisher Copyright: © 2021 authors. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/6/1

Y1 - 2021/6/1

N2 - Based on 4.481×108 ψ(3686) events collected with the BESIII detector at BEPCII, the branching fraction of the isospin violating decay ψ(3686)→ς¯0Λ+c.c. is measured to be (1.60±0.31±0.13±0.58)×10-6, where the first uncertainty is statistical, the second is systematic, and the third is the uncertainty arising from interference with the continuum. This result is significantly smaller than the measurement based on CLEO-c data sets. The decays χcJ→ΛΛ¯ are measured via ψ(3686)→γχcJ, and the branching fractions are determined to be B(χc0→ΛΛ¯)=(3.64±0.10±0.10±0.07)×10-4, B(χc1→ΛΛ¯)=(1.31±0.06±0.06±0.03)×10-4, B(χc2→ΛΛ¯)=(1.91±0.08±0.17±0.04)×10-4, where the third uncertainties are systematic due to the ψ(3686)→γχcJ branching fractions.

AB - Based on 4.481×108 ψ(3686) events collected with the BESIII detector at BEPCII, the branching fraction of the isospin violating decay ψ(3686)→ς¯0Λ+c.c. is measured to be (1.60±0.31±0.13±0.58)×10-6, where the first uncertainty is statistical, the second is systematic, and the third is the uncertainty arising from interference with the continuum. This result is significantly smaller than the measurement based on CLEO-c data sets. The decays χcJ→ΛΛ¯ are measured via ψ(3686)→γχcJ, and the branching fractions are determined to be B(χc0→ΛΛ¯)=(3.64±0.10±0.10±0.07)×10-4, B(χc1→ΛΛ¯)=(1.31±0.06±0.06±0.03)×10-4, B(χc2→ΛΛ¯)=(1.91±0.08±0.17±0.04)×10-4, where the third uncertainties are systematic due to the ψ(3686)→γχcJ branching fractions.

UR - http://www.scopus.com/inward/record.url?scp=85108225784&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.103.112004

DO - 10.1103/PhysRevD.103.112004

M3 - Article

AN - SCOPUS:85108225784

VL - 103

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 11

M1 - 112004

ER -

ID: 28875732