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.
- Publication:
-
Proceedings of the 51st International Winter Meeting on Nuclear Physics (Bormio 2013). 21-25 January 2013. Bormio (Italy). Published online at <A href="http://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=184">http://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=184</A
- Pub Date:
- 2013
- DOI:
- 10.22323/1.184.0014
- arXiv:
- arXiv:1306.6814
- Bibcode:
- 2013wmnp.confE..14A
- Keywords:
-
- High Energy Physics - Experiment
- E-Print:
- Proceedings for 51st International Winter Meeting on Nuclear Physics, 21-25 January 2013, Bormio (Italy)