25 February 2019 to 1 March 2019
Budker INP
Asia/Novosibirsk timezone

The decay J/ψ→γX(Jᴾ)→γϕϕ: Dynamical analysis of X(Jᴾ)→ϕϕ resonance contributions.

27 Feb 2019, 11:40
20m
Conference room

Conference room

Contributed Oral Spectroscopy of light and heavy quarks Mesons of light quarks

Speaker

Dr Arkadii Kozhevnikov (S.L. Sobolev Institute for Mathematics)

Description

The dynamics of the $J^{PC}=0^{-+}$, $0^{++}$, and $2^{++}$ resonance contributions to the decay $J/\psi\to\gamma X(J^{PC})\to\gamma\phi\phi$ is analysed using the data obtained by BESIII collaboration. The effective coupling constants parameterising invariant amplitudes of the transitions $J/\psi\to\gamma X(J^{PC})$ and $X(J^{PC})\to\phi\phi$ and masses of $X(J^{PC})$ resonances are found from the fits. They are used for evaluation of the branching fractions $B_{X(J^{PC})\to\phi\phi}$, relative branching fractions $B_{J/\psi\to\gamma X(J^{PC})\to\gamma\phi\phi}$, and for obtaining the photon angular distributions.

Primary author

Dr Arkadii Kozhevnikov (S.L. Sobolev Institute for Mathematics)

Presentation Materials

Peer reviewing

Paper