f1(1285) → e+e- decay and direct f1 production in e+e- collisions

A.S. Rudenko

doi:10.1051/epjconf/201818202106

EPJ

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Proceedings

Open Access

EPJ Web of Conferences 182, 02106 (2018)
https://doi.org/10.1051/epjconf/201818202106

f₁(1285) → e⁺e^- decay and direct f₁ production in e⁺e^- collisions

A.S. Rudenko¹^,2^a

¹ Budker Institute of Nuclear Physics, Novosibirsk 630090, Russia
² Novosibirsk State University, Novosibirsk 630090, Russia

^a e-mail: a.s.rudenko@inp.nsk.su

Published online: 3 August 2018

Abstract

The width of the f₁(1285) → e+e⁺e_- decay is calculated in the vector meson dominance model. The result depends on the relative phase between two coupling constants describing f₁ → ρ⁰γ decay. The width Γ( f₁ → e+e⁺e_-) is estimated to be ≃ 0:07 - 0:19 eV. Direct f₁ production in e+e⁺e_- collisions is discussed, and the e+e⁺e_- → f₁ → a₀π → ηππ cross section is calculated. Charge asymmetry in the e+e⁺e_- → ηπ⁺π^- reaction due to interference between e+e⁺e_- → f₁ and e+e⁺e_- → ηρ⁰ amplitudes is studied.

© The Authors, published by EDP Sciences 2018

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.