PPT Slide
What have we understood studying the dynamics of the Ds+ p-p+p+ ?
- No evidence for annihilation diagram!
- r(770) is a pure combination of quarks u, d ; Ds+ could decay in r(770)p only through
annihilation diagram ( strong signature):
- A small contribution of r (1450) (Fit Fraction 5%), has been measured.
But this resonance could equally decay in KK (Crystal Barrel: Phys. Rev. D57 1998)
? has a small ( ss ) contribution :
? but there is no evidence of the channel r(770)p ! (2?2 ?1)%
? Ds+ could decay in r(1450)p through a spectator diagram!