Observation of ψ ( 3686 ) → Λ ¯ Λ η ′  decay

BESIII Collaboration; M. Ablikim; M.N. Achasov; P. Adlarson; X.C. Ai; R. Aliberti; A. Amoroso; Nasser Kalantar-Nayestanaki; Myroslav Kavatsyuk; Johan Messchendorp

doi:10.1103/PhysRevD.108.112014

Observation of ψ ( 3686 ) → Λ ¯ Λ η ′ decay

BESIII Collaboration, M. Ablikim, M.N. Achasov, P. Adlarson, X.C. Ai, R. Aliberti, A. Amoroso, Nasser Kalantar-Nayestanaki, Myroslav Kavatsyuk, Johan Messchendorp

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

1 Citation (Scopus)

45 Downloads (Pure)

Abstract

Using a sample of ð27.12 0.14Þ × 108 ψð3686Þ events collected with the BESIII detector, the decay ψð3686Þ → ΛΛ¯ η0 with η0 subsequently decaying into γπþπ− and ηπþπ− is observed for the first time. The branching fraction of ψð3686Þ → ΛΛ¯ η0 is measured to be ð7.34 0.94ðstatÞ 0.43ðsysÞÞ × 10−6. No resonant structures are evident in the Λη0, Λ¯ η0 and ΛΛ¯ mass spectra.

Original language	English
Article number	112014
Number of pages	11
Journal	Physical Review D
Volume	108
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.108.112014
Publication status	Published - Dec-2023

Access to Document

10.1103/PhysRevD.108.112014Licence: CC BY

Observation of ψ ( 3686 ) → Λ ¯ Λ η ′ decayFinal publisher's version, 766 KBLicence: CC BY

Handle.net

Persistent link

Cite this

@article{538c9e10b15748188a022a741e02b7ee,

title = "Observation of ψ ( 3686 ) → Λ ¯ Λ η ′ decay",

abstract = "Using a sample of {\dh}27.12 0.14{\TH} × 108 ψ{\dh}3686{\TH} events collected with the BESIII detector, the decay ψ{\dh}3686{\TH} → ΛΛ¯ η0 with η0 subsequently decaying into γπ{\th}π− and ηπ{\th}π− is observed for the first time. The branching fraction of ψ{\dh}3686{\TH} → ΛΛ¯ η0 is measured to be {\dh}7.34 0.94{\dh}stat{\TH} 0.43{\dh}sys{\TH}{\TH} × 10−6. No resonant structures are evident in the Λη0, Λ¯ η0 and ΛΛ¯ mass spectra.",

author = "{BESIII Collaboration} and M. Ablikim and M.N. Achasov and P. Adlarson and X.C. Ai and R. Aliberti and A. Amoroso and Nasser Kalantar-Nayestanaki and Myroslav Kavatsyuk and Johan Messchendorp",

year = "2023",

month = dec,

doi = "10.1103/PhysRevD.108.112014",

language = "English",

volume = "108",

journal = "Physical Review D",

issn = "1550-7998",

publisher = "AMER PHYSICAL SOC",

number = "11",

}

TY - JOUR

T1 - Observation of ψ ( 3686 ) → Λ ¯ Λ η ′ decay

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M.N.

AU - Adlarson, P.

AU - Ai, X.C.

AU - Aliberti, R.

AU - Amoroso, A.

AU - Kalantar-Nayestanaki, Nasser

AU - Kavatsyuk, Myroslav

AU - Messchendorp, Johan

PY - 2023/12

Y1 - 2023/12

N2 - Using a sample of ð27.12 0.14Þ × 108 ψð3686Þ events collected with the BESIII detector, the decay ψð3686Þ → ΛΛ¯ η0 with η0 subsequently decaying into γπþπ− and ηπþπ− is observed for the first time. The branching fraction of ψð3686Þ → ΛΛ¯ η0 is measured to be ð7.34 0.94ðstatÞ 0.43ðsysÞÞ × 10−6. No resonant structures are evident in the Λη0, Λ¯ η0 and ΛΛ¯ mass spectra.

AB - Using a sample of ð27.12 0.14Þ × 108 ψð3686Þ events collected with the BESIII detector, the decay ψð3686Þ → ΛΛ¯ η0 with η0 subsequently decaying into γπþπ− and ηπþπ− is observed for the first time. The branching fraction of ψð3686Þ → ΛΛ¯ η0 is measured to be ð7.34 0.94ðstatÞ 0.43ðsysÞÞ × 10−6. No resonant structures are evident in the Λη0, Λ¯ η0 and ΛΛ¯ mass spectra.

U2 - 10.1103/PhysRevD.108.112014

DO - 10.1103/PhysRevD.108.112014

M3 - Article

SN - 1550-7998

VL - 108

JO - Physical Review D

JF - Physical Review D

IS - 11

M1 - 112014

ER -

Observation of ψ ( 3686 ) → Λ ¯ Λ η ′ decay

Abstract

Access to Document

Handle.net

Fingerprint

Cite this