31 July 2023 to 4 August 2023
America/Chicago timezone

Lattice QCD calculation of the invisible decay J/ψ→γνν

1 Aug 2023, 10:00
30m
Ramsey Auditorium (WH0S)

Ramsey Auditorium

WH0S

Plenary talk Plenary session

Speaker

Yu Meng

Description

Searching for the dark matter is one of the major goals of contemporary astronomy and particle physics. Many experiments have performed the searches for the J/ψ radiative decays into invisible particles, and no signal was observed. In the future, several experiments have the great potential to significantly improve the upper limit on the branching fraction of J/ψ + invisible. In this talk, we present the first lattice QCD study on J/ψ→γνν, which serving as a standard model background for this invisible decay. After a continuous extrapolation for three different lattice spacings, an exact value of the branching fraction is obtained.

Topical area Hadronic and Nuclear Spectrum and Interactions

Primary author

Presentation materials