Abstract
The cross sections for e+e-→Φ π+π- and e+e-→Φ f0(980) are measured from threshold to s=3.0GeV using initial-state radiation. The analysis is based on a data sample of 673fb-1 collected on and below the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. First measurements are reported for the resonance parameters of the Φ (1680) in the Φ π+π- mode: m=(1689±7±10)MeV/c2 and Γ=(211±14±19)MeV/c2. A structure at s=2.1GeV/c2, corresponding to the so called Y(2175), is observed; its mass and width are determined to be (2079±13-28+79)MeV/c2 and (192±23-61+25)MeV/c2, respectively.
Original language | English |
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Article number | 031101 |
Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Volume | 80 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2009 Aug 4 |
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)