Some Comments on the Putative $Θ^ +$ (1543) Exotic State

Details Some Comments on the Putative $Θ^ +$ (1543) Exotic State Some Comments on the Putative $Θ^ +$ (1543) Exotic State

2003-07-29

arxiv.org/abs/hep-ph/0307357v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, no figures, RevTex 4

Scientific paper

We point out that existing $K^+d$ scattering data available in the PDG (Particle Data Group compilation) suggest some fluctuations in those momentum bins where the (Fermi motion broadened) $\Theta^+$[1543] resonance recently indicated in many gamma nuclear reactions and predicted six years ago by Diakonv Petrov and Polyakov might have shown up. The I=0, $J^P={1/2}^+$ P-wave channel should have a universal peak cross section of $\sim 37$ mb at resonance. The smallness of the effect seen in $K^+d$ with the $\delta \sigma $ fluctuations being less than 4 mb imply an indirect bound $\Gamma_{\Theta^+} < 6$ MeV, far stronger than the direct gamma-d measurements. This renders the theoretical interpretation of the new state very difficult.

Affiliated with

Also associated with

No associations

Rating

Some Comments on the Putative $Θ^ +$ (1543) Exotic State 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 Some Comments on the Putative $Θ^ +$ (1543) Exotic State, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Some Comments on the Putative $Θ^ +$ (1543) Exotic State will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-662966