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

Physics – Nuclear Physics – Nuclear Theory

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

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.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

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

     

Profile ID: LFWR-SCP-O-569256

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.