The PWA of π−π0 system in the presence of a significant irremovable background

M. Mikhasenko; V. Dorofeev; A. Ekimov; V. Gotman; A. Ivashin; I. Kachaev; V. Kalendarev; Yu. Khokhlov; M. Kholodenko; V. Konstantinov; S. Kravchenko; V. Matveev; V. Nikolaenko; A. Plekhanov; D. Ryabchikov; Yu. Salomatin; V. Sugonyaev; A. Zaitsev

doi:10.1051/epjconf/20148102012

EPJ

a
b
d
e
ap
st
h
plus

Proceedings

Open Access

EPJ Web of Conferences 81, 02012 (2014)
https://doi.org/10.1051/epjconf/20148102012

The PWA of π⁻π⁰ system in the presence of a significant irremovable background

M. Mikhasenko¹^a, V. Dorofeev¹, A. Ekimov¹, V. Gotman¹, A. Ivashin¹, I. Kachaev¹, V. Kalendarev¹, Yu. Khokhlov¹^,2, M. Kholodenko¹, V. Konstantinov¹, S. Kravchenko¹, V. Matveev¹, V. Nikolaenko¹^,2, A. Plekhanov¹, D. Ryabchikov¹, Yu. Salomatin¹, V. Sugonyaev¹ and A. Zaitsev¹^,2

¹ Institute for High Energy Physics, Protvino, Russia
² Moscow Institute of Physics and Technology, Dolgoprudny, Russia

^a e-mail: mikhail.mikhasenko@gmail.com

Published online: 26 November 2014

Abstract

7 × 10⁶ events of the reaction π⁻N → π⁻π⁰N′ were collected at the VES experiment. Mass independent angular analysis is performed to study production mechanism of ρ-meson. t-channel ω-exchange and π-exchange are isolated. The analysis is done for 8 bins of a four momentum transfer squared to extract cross-section dependence of t′. Novel method of waves extraction is applied to deal with a significant irremovable background.

© Owned by the authors, published by EDP Sciences, 2014

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.