The exotic eta'pi- Wave in 190 GeV pi-p --> pi-eta'p at COMPASS
High Energy Physics - Experiment
2019-08-13 v2
Abstract
A sample of 35,000 events of the type pi-p --> eta'pi-p_slow (eta' --> eta pi-pi+, eta --> gamma gamma) with -t>0.1 GeV^2/c^2 was selected from COMPASS 2008 data for a partial-wave analysis. We study the broad P_+ structure known from previous experiments at lower energies, in particular its phase motion relative to the D_+-wave near the a_2(1320) mass and relative to a broad D_+-wave structure at higher mass. We also find the a_4(2040). We compare kinematic plots for the eta'pi^- and eta pi- final states.
Cite
@article{arxiv.1108.6191,
title = {The exotic eta'pi- Wave in 190 GeV pi-p --> pi-eta'p at COMPASS},
author = {T. Schlüter},
journal= {arXiv preprint arXiv:1108.6191},
year = {2019}
}
Comments
Conference: Hadron 2011. v2 added sentence intended to avoid misunderstanding of technical plot; Proceedings of the XIV International Conference on Hadron Spectroscopy, eConf C110613 (2011)