High spin resonances produced in π+π−π− and π−π0π0 systems at VES setup

Igor Kachaev; Dmitry Ryabchikov

doi:10.1051/epjconf/201919902025

EPJ

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Proceedings

Open Access

EPJ Web of Conferences 199, 02025 (2019)
https://doi.org/10.1051/epjconf/201919902025

High spin resonances produced in π⁺π⁻π⁻ and π⁻π⁰π⁰ systems at VES setup

Igor Kachaev^* and Dmitry Ryabchikov for VES group

NRC Kurchatov Institute, IHEP, Protvino, Russia

^* e-mail: Igor.Katchaev@ihep.ru

Published online: 1 February 2019

Abstract

A study of high spin resonances produced in π⁺π⁻π⁻ and π⁻π⁰π⁰ systems with 29 GeV/c π⁻ beam on Be target is presented. About 87 million events for the first one and 32 million events for the second one are collected with VES setup in a wide range of transfer momentum squared 0 < |t′| < 1 GeV²/c². For both reactions this is the largest statistics in the world. The data are analysed using the PWA formalism of full rank density matrix and rank 1 density matrix. The a₃(1875) and a₄(2040) meson parameters are given and their production mechanism is discussed.

© The Authors, published by EDP Sciences, 2019

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.