A Partial-Wave Analysis of Centrally Produced Two-Pseudoscalar Final States in pp Reactions at COMPASS
Abstract
COMPASS is a fixed-target experiment at CERN SPS which focused on light-quark hadron spectroscopy during the data taking in 2008 and 2009. A world-leading data set was collected with a 190GeV/c hadron beam impinging on a liquid hydrogen target in order to study the central production of glueball candidates. In this report, we motivate double-Pomeron exchange as a relevant production process for mesons without valence quark content. We select a centrally produced sample from the COMPASS data set recorded with a proton beam and introduce a decomposition into partial waves. Particular attention is paid to inherent mathematical ambiguities in the amplitude analysis of two-pseudoscalar final states. Furthermore, we show a simple parametrisation for the centrally produced K+K- system which can describe the mass dependence of the fit results with sensible Breit-Wigner parameters.
Keywords
Cite
@article{arxiv.1306.6814,
title = {A Partial-Wave Analysis of Centrally Produced Two-Pseudoscalar Final States in pp Reactions at COMPASS},
author = {A. Austregesilo},
journal= {arXiv preprint arXiv:1306.6814},
year = {2019}
}
Comments
Proceedings for 51st International Winter Meeting on Nuclear Physics, 21-25 January 2013, Bormio (Italy)