Search for the decay J/ψ → γ+ invisible

BESIII Collaboration; M. Ablikim; M.N. Achasov; P. Adlarson; S. Ahmed; M. Albrecht; A. Amoroso; Q. An; Nasser Kalantar-Nayestanaki; Rosa Kappert; Myroslav Kavatsyuk; Johan Messchendorp; Viktor Rodin

doi:10.1103/PhysRevD.101.112005

Search for the decay J/ψ → γ+ invisible

BESIII Collaboration, M. Ablikim, M.N. Achasov, P. Adlarson, S. Ahmed, M. Albrecht, A. Amoroso, Q. An, Nasser Kalantar-Nayestanaki, Rosa Kappert, Myroslav Kavatsyuk, Johan Messchendorp, Viktor Rodin

Energy and Sustainability Research Institute Groningen

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Abstract

We search for J/ψ radiative decays into a weakly interacting neutral particle, namely an invisible particle, using the J/ψ produced through the process ψ(3686)→π+π-J/ψ in a data sample of (448.1±2.9)×106 ψ(3686) decays collected by the BESIII detector at BEPCII. No significant signal is observed. Using a modified frequentist method, upper limits on the branching fractions are set under different assumptions of invisible particle masses up to 12 GeV/c2. The upper limit corresponding to an invisible particle with zero mass is 7.0×10-7 at the 90% confidence level.

Original language	English
Article number	112005
Number of pages	9
Journal	Physical Review D
Volume	101
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.101.112005
Publication status	Published - 1-Jun-2020

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title = "Search for the decay J/ψ → γ+ invisible",

abstract = "We search for J/ψ radiative decays into a weakly interacting neutral particle, namely an invisible particle, using the J/ψ produced through the process ψ(3686)→π+π-J/ψ in a data sample of (448.1±2.9)×106 ψ(3686) decays collected by the BESIII detector at BEPCII. No significant signal is observed. Using a modified frequentist method, upper limits on the branching fractions are set under different assumptions of invisible particle masses up to 12 GeV/c2. The upper limit corresponding to an invisible particle with zero mass is 7.0×10-7 at the 90% confidence level.",

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T1 - Search for the decay J/ψ → γ+ invisible

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M.N.

AU - Adlarson, P.

AU - Ahmed, S.

AU - Albrecht, M.

AU - Amoroso, A.

AU - An, Q.

AU - Kalantar-Nayestanaki, Nasser

AU - Kappert, Rosa

AU - Kavatsyuk, Myroslav

AU - Messchendorp, Johan

AU - Rodin, Viktor

PY - 2020/6/1

Y1 - 2020/6/1

N2 - We search for J/ψ radiative decays into a weakly interacting neutral particle, namely an invisible particle, using the J/ψ produced through the process ψ(3686)→π+π-J/ψ in a data sample of (448.1±2.9)×106 ψ(3686) decays collected by the BESIII detector at BEPCII. No significant signal is observed. Using a modified frequentist method, upper limits on the branching fractions are set under different assumptions of invisible particle masses up to 12 GeV/c2. The upper limit corresponding to an invisible particle with zero mass is 7.0×10-7 at the 90% confidence level.

AB - We search for J/ψ radiative decays into a weakly interacting neutral particle, namely an invisible particle, using the J/ψ produced through the process ψ(3686)→π+π-J/ψ in a data sample of (448.1±2.9)×106 ψ(3686) decays collected by the BESIII detector at BEPCII. No significant signal is observed. Using a modified frequentist method, upper limits on the branching fractions are set under different assumptions of invisible particle masses up to 12 GeV/c2. The upper limit corresponding to an invisible particle with zero mass is 7.0×10-7 at the 90% confidence level.

U2 - 10.1103/PhysRevD.101.112005

DO - 10.1103/PhysRevD.101.112005

M3 - Article

SN - 1550-7998

VL - 101

JO - Physical Review D

JF - Physical Review D

IS - 11

M1 - 112005

ER -

Search for the decay J/ψ → γ+ invisible

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