On the mass, width and coupling constants of the f0(980)

Details On the mass, width and coupling constants of the f0(980) On the mass, width and coupling constants of the f0(980)

2002-04-29

arxiv.org/abs/hep-ph/0204338v3

Eur.Phys.J. C28 (2003) 107-114

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 2 figures. A new analysis including the latest pi-pi phase shift data is performed. To be published in Eur. Phys. J.

Scientific paper

10.1140/epjc/s2003-01140-6

Using the pole approach we determine the mass and width of the $f_0(980)$; in particular, we analyze the possibility that two nearby poles are associated to it. We restrict our analysis to a neighborhood of the resonance, using $\pi\pi$ data for the phase shift and inelasticity, and the invariant mass spectrum of the $J/\psi\to\phi\pi\pi, \phi K\bar K$ decays. The formalism we use is based on unitarity and a generalized version of the Breit-Wigner parameterization. We find that a single pole describes the $f_0(980)$, the precise position depending upon the $\pi\pi$ data used. As a byproduct, values for the $g_{f_0\pi\pi}$ and $g_{f_0K\bar K}$ coupling constants are obtained.

Affiliated with

Also associated with

No associations

Rating

On the mass, width and coupling constants of the f0(980) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with On the mass, width and coupling constants of the f0(980), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the mass, width and coupling constants of the f0(980) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-260747