Research articles

search articles

My Pages

Stat

Members: 3645
Articles: 2'506'133
Articles rated: 2609

26 April 2024

» arxiv » 0906.3819

Article overview

A global fit to determine the pseudoscalar mixing angle and the gluonium content of the eta' meson
F. Ambrosino ; A. Antonelli ; M. Antonelli ; F. Archilli ; P. Beltrame ; G. Bencivenni ; S. Bertolucci ; C. Bini ; C. Bloise ; S. Bocchetta ; F. Bossi ; P. Branchini ; G. Capon ; T. Capussela ; F. Ceradini ; P. Ciambrone ; E. De Lucia ; A. De Santis ; P. De Simone ; G. De Zorzi ; A. Denig ; A. Di Domenico ; C. Di Donato ; B. Di Micco ; M. Dreucci ; G. Felici ; S. Fiore ; P. Franzini ; C. Gatti ; P. Gauzzi ; S. Giovannella ; E. Graziani ; M. Jacewicz ; G. Lanfranchi ; J. Lee-Franzini ; M. Martini ; P. Massarotti ; S. Meola ; S. Miscetti ; M. Moulson ; S. Müller ; F. Murtas ; M. Napolitano ; F. Nguyen ; M. Palutan ; E. Pasqualucci ; A. Passeri ; V. Patera ; P. Santangelo ; B. Sciascia ; T. Spadaro ; M. Testa ; L. Tortora ; P. Valente ; G. Venanzoni ; R.Versaci ; G. Xu ;
Date:	20 Jun 2009
Abstract:	We update the values of the eta-eta’ mixing angle and of the eta’ gluonium content by fitting our measurement R_phi = BR(phi to eta’ gamma)/ BR(phi to eta gamma) together with several vector meson radiative decays to pseudoscalars (V to P gamma), pseudoscalar mesons radiative decays to vectors (P to V gamma) and the eta’ to gamma gamma, pi^0 to gamma gamma widths. From the fit we extract a gluonium fraction of Z^2_G = 0.12 +- 0.04, the pseudoscalar mixing angle psi_P = (40.4 +- 0.6) degree and the phi-omega mixing angle psi_V = (3.32 +- 0.09) degree. Z^2_G and psi_P are fairly consistent with those previously published. We also evaluate the impact on the eta’ gluonium content determination of future experimental improvements of the eta’ branching ratios and decay width.
Source:	arXiv, 0906.3819
Services:	Forum \| Review \| PDF \| Favorites

No review found.

Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

ScienXe.org
» my Online CV
» Free

News, job offers and information for researchers and scientists:

home

contact

sitemap