Branching fraction measurement of J /ψ →kSKL and search for J /ψ →kSKS

M. Ablikim; M. N. Achasov; S. Ahmed; M. Albrecht; M. Alekseev; A. Amoroso; Z. Haddadi; N. Kalantar-Nayestanaki; M. Kavatsyuk; J. G. Messchendorp; M. Tiemens; BESIII Collaboration

doi:10.1103/PhysRevD.96.112001

Branching fraction measurement of J /ψ →kSKL and search for J /ψ →kSKS

M. Ablikim, M. N. Achasov, S. Ahmed, M. Albrecht, M. Alekseev, A. Amoroso, Z. Haddadi, N. Kalantar-Nayestanaki, M. Kavatsyuk, J. G. Messchendorp, M. Tiemens, BESIII Collaboration

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Abstract

Using a sample of 1.31×109 J/ψ events collected with the BESIII detector at the BEPCII collider, we study the decays of J/ψ→KSKL and KSKS. The branching fraction of J/ψ→KSKL is determined to be B(J/ψ→KSKL)=(1.93±0.01(stat)±0.05(syst))×10-4, which significantly improves on previous measurements. No clear signal is observed for the J/ψ→KSKS process, and the upper limit at the 95% confidence level for its branching fraction is determined to be B(J/ψ→KSKS)<1.4×10-8, which improves on the previous searches by 2 orders in magnitude and reaches the order of the Einstein-Podolsky-Rosen expectation.

Original language	English
Article number	112001
Journal	Physical Review D
Volume	96
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.96.112001
Publication status	Published - 4-Dec-2017

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DECAYS

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@article{9184b4d72cde4b3b9c437b8626558ec4,

title = "Branching fraction measurement of J /ψ →kSKL and search for J /ψ →kSKS",

abstract = "Using a sample of 1.31×109 J/ψ events collected with the BESIII detector at the BEPCII collider, we study the decays of J/ψ→KSKL and KSKS. The branching fraction of J/ψ→KSKL is determined to be B(J/ψ→KSKL)=(1.93±0.01(stat)±0.05(syst))×10-4, which significantly improves on previous measurements. No clear signal is observed for the J/ψ→KSKS process, and the upper limit at the 95% confidence level for its branching fraction is determined to be B(J/ψ→KSKS)<1.4×10-8, which improves on the previous searches by 2 orders in magnitude and reaches the order of the Einstein-Podolsky-Rosen expectation.",

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author = "M. Ablikim and Achasov, {M. N.} and S. Ahmed and M. Albrecht and M. Alekseev and A. Amoroso and Z. Haddadi and N. Kalantar-Nayestanaki and M. Kavatsyuk and Messchendorp, {J. G.} and M. Tiemens and {BESIII Collaboration}",

year = "2017",

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doi = "10.1103/PhysRevD.96.112001",

language = "English",

volume = "96",

journal = "Physical Review D",

issn = "1550-7998",

publisher = "AMER PHYSICAL SOC",

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TY - JOUR

T1 - Branching fraction measurement of J /ψ →kSKL and search for J /ψ →kSKS

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Ahmed, S.

AU - Albrecht, M.

AU - Alekseev, M.

AU - Amoroso, A.

AU - Haddadi, Z.

AU - Kalantar-Nayestanaki, N.

AU - Kavatsyuk, M.

AU - Messchendorp, J. G.

AU - Tiemens, M.

AU - BESIII Collaboration

PY - 2017/12/4

Y1 - 2017/12/4

N2 - Using a sample of 1.31×109 J/ψ events collected with the BESIII detector at the BEPCII collider, we study the decays of J/ψ→KSKL and KSKS. The branching fraction of J/ψ→KSKL is determined to be B(J/ψ→KSKL)=(1.93±0.01(stat)±0.05(syst))×10-4, which significantly improves on previous measurements. No clear signal is observed for the J/ψ→KSKS process, and the upper limit at the 95% confidence level for its branching fraction is determined to be B(J/ψ→KSKS)<1.4×10-8, which improves on the previous searches by 2 orders in magnitude and reaches the order of the Einstein-Podolsky-Rosen expectation.

AB - Using a sample of 1.31×109 J/ψ events collected with the BESIII detector at the BEPCII collider, we study the decays of J/ψ→KSKL and KSKS. The branching fraction of J/ψ→KSKL is determined to be B(J/ψ→KSKL)=(1.93±0.01(stat)±0.05(syst))×10-4, which significantly improves on previous measurements. No clear signal is observed for the J/ψ→KSKS process, and the upper limit at the 95% confidence level for its branching fraction is determined to be B(J/ψ→KSKS)<1.4×10-8, which improves on the previous searches by 2 orders in magnitude and reaches the order of the Einstein-Podolsky-Rosen expectation.

KW - DECAYS

U2 - 10.1103/PhysRevD.96.112001

DO - 10.1103/PhysRevD.96.112001

M3 - Article

SN - 1550-7998

VL - 96

JO - Physical Review D

JF - Physical Review D

IS - 11

M1 - 112001

ER -

Branching fraction measurement of J /ψ →kSKL and search for J /ψ →kSKS

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