## Abstract

Angular distributions of photons with definite linear polarizations relative to the plane spanned by the momentum of initial electron and the total momentum of the V_{1} V _{1} pair in the reaction e ^{+} e ^{-} → V → γ X (J^{P} ) → γV _{1} V _{1} (V = J/ψ,ψ′,...,(1S),... and V _{1} = ρ,ω,φ,...) are calculated. It is shown that the sign of asymmetry of the distributions of photons polarized in the above plane and orthogonal to it correlates with the signature P(-1)^{J} of the X resonance with given spin-parity J^{P} = 0^{±}, 1^{±}, 2^{±} so it may help to establish this quantum number in a way which does not depend on the specific model of the X(J^{P} ) → V _{1} V _{1} amplitude.

Original language | English |
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Article number | 012018 |

Journal | Journal of Physics: Conference Series |

Volume | 1435 |

Issue number | 1 |

DOIs | |

Publication status | Published - 22 Jan 2020 |

Event | 18th Workshop on High Energy Spin Physics, DSPIN 2019 - Dubna, Moscow Region, Russian Federation Duration: 2 Sep 2019 → 6 Sep 2019 |