Hints on the quadrupole deformation of the $Δ$(1232)

Details Hints on the quadrupole deformation of the $Δ$(1232) Hints on the quadrupole deformation of the $Δ$(1232)

2006-01-11

arxiv.org/abs/nucl-th/0601037v2

Phys.Rev. C73 (2006) 042201

Physics

Nuclear Physics

Nuclear Theory

Enlarged conclusions and explanations on the E2/M1 ratio. Figure 3 improved. References updated. 5 pages. 3 figures. 2 tables.

Scientific paper

10.1103/PhysRevC.73.042201

The E2/M1 ratio (EMR) of the $\Delta$(1232) is extracted from the world data in pion photoproduction by means of an Effective Lagrangian Approach (ELA).This quantity has been derived within a crossing symmetric, gauge invariant, and chiral symmetric Lagrangian model which also contains a consistent modern treatment of the $\Delta$(1232) resonance. The \textit{bare} s-channel $\Delta$(1232) contribution is well isolated and Final State Interactions (FSI) are effectively taken into account fulfilling Watson's theorem. The obtained EMR value, EMR$=(-1.30\pm0.52)$%, is in good agreement with the latest lattice QCD calculations [Phys. Rev. Lett. 94, 021601 (2005)] and disagrees with results of current quark model calculations.

Affiliated with

Also associated with

No associations

Rating

Hints on the quadrupole deformation of the $Δ$(1232) 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 Hints on the quadrupole deformation of the $Δ$(1232), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hints on the quadrupole deformation of the $Δ$(1232) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-569256