Constraints on widths of mixed pentaquark multiplets

Details Constraints on widths of mixed pentaquark multiplets Constraints on widths of mixed pentaquark multiplets

2004-11-18

arxiv.org/abs/hep-ph/0411247v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 4 figures

Scientific paper

We determine constraints on the partial widths of mixed pentaquark multiplets in the framework of heavy baryon chiral perturbation theory (HB$\chi$PT). The partial widths satisfy a GMO-type relation at leading order in HB$\chi$PT, for arbitrary mixing. The widths of N(1440), N(1710), and $\Theta(1540)$ are not consistent with ideal mixing, $\theta_{N} = 35.3^{\circ}$, but are consistent with $\theta_{N} \lesssim 25^{\circ}$. Furthermore, there are parameter values in HB$\chi$PT that produce such a mixing angle while allowing the identification of the mass spectrum above. As an alternative to non-ideal mixing, we also suggest reasons for giving up on N(1440) as a pure pentaquark state.

Affiliated with

Also associated with

No associations

Rating

Constraints on widths of mixed pentaquark multiplets 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 Constraints on widths of mixed pentaquark multiplets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constraints on widths of mixed pentaquark multiplets will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-85287