Radiative decays of heavy quarkonia into two vector mesons. Spin properties of amplitudes and angular distributions of linearly polarized photons

Результат исследования: Научные публикации в периодических изданияхстатья по материалам конференции


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 V1 V 1 pair in the reaction e + e - → V → γ X (JP ) → 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 JP = 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(JP ) → V 1 V 1 amplitude.

Язык оригиналаанглийский
Номер статьи012018
ЖурналJournal of Physics: Conference Series
Номер выпуска1
СостояниеОпубликовано - 22 янв 2020
Событие18th Workshop on High Energy Spin Physics, DSPIN 2019 - Dubna, Moscow Region, Российская Федерация
Продолжительность: 2 сен 20196 сен 2019