Some indication for a missing chiral partner eta_4 around 2 GeV

Physics – High Energy Physics – High Energy Physics - Phenomenology

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

4 pp. A fit with the energy-dependent width has been added that agrees with the previous analysis. Accepted by PRD

Scientific paper

The high-lying mesons in the light quark sector previously obtained from the partial wave analysis of the proton-antiproton annihilation in flight at 1.9 - 2.4 GeV region at CERN reveal a very high degree of degeneracy. This degeneracy can be explained as due to an effective restoration of both SU(2)_L * SU(2)_R and U(1)_A symmetries combined with a principal quantum number n + J. In this case there must be chiral partners for the highest spin states in the 2 and 2.3 GeV bands presently missing in the data. Here we reanalyze the Crystal Barrel data and show an indication for existence of the missing $4^{-+}$ state around 2 GeV. This result calls for further experimental search of the missing states both in the proton-antiproton annihilation and in the production reactions.

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

Some indication for a missing chiral partner eta_4 around 2 GeV 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 indication for a missing chiral partner eta_4 around 2 GeV, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Some indication for a missing chiral partner eta_4 around 2 GeV will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-236950

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