Combined fit to BaBar and Belle Data on e+e- to phi pi+ pi- and phi f0(980)

• Published in: arXiv.org
• Main Authors: Shen, C P, Yuan, C Z
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 09.11.2009
• Subjects: Physics - High Energy Physics - Experiment
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.0911.1591

A combined fit is performed to the BaBar and Belle measurements of the \(\EE \to \phi \pi^+ \pi^-\) and \(\phi \fzero\) cross sections for center-of-mass energy between threshold and 3.0 GeV. The resonance parameters of the \(\phi(1680)\) and Y(2175) are determined. The mass is \((1681^{+10}_{-12})\) MeV/\(c^2\) and the width is \((221^{+34}_{-24})\) MeV/\(c^2\) for the \(\phi(1680)\), and the mass is \((2117^{+59}_{-49})\) MeV/\(c^2\) and the width is \((164^{+69}_{-80})\) MeV/\(c^2\) for the Y(2175). These information will shed light on the understanding of the nature of the excited \(\phi\) and \(Y\) states observed in \(\EE\) annihilation.