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A Partial-Wave Analysis of Centrally Produced Two-Pseudoscalar Final States in pp Reactions at COMPASS | | A. Austregesilo for the COMPASS Collaboration
; | | Date: |
28 Jun 2013 | | 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. | | Source: | arXiv, 1306.6814 | | Services: | Forum | Review | PDF | Favorites | |
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