The Constituent Quark Model Revisited - Quark Masses, New Predictions for Hadron Masses and KN Pentaquark

Details The Constituent Quark Model Revisited - Quark Masses, New Predictions for Hadron Masses and KN Pentaquark The Constituent Quark Model Revisited - Quark Masses, New Predictions for Hadron Masses and KN Pentaquark

2003-07-18

arxiv.org/abs/hep-ph/0307243v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 25 pages, no figures, typos corrected

Scientific paper

Prompted by the recent surprising results in QCD spectroscopy, we extend to heavy flavors the hadron mass relations showing that the constituent quark mass differences and ratios have the same values when obtained from mesons and baryons. We obtain several new successful relations involving heavy quarks and provide some related predictions. We discuss in detail the apparent sharp decrease in m_s and m_c, when a light partner quark in a meson is replaced by a heavy one and construct a potential model which qualitatively reproduces this pattern through wave function effects. We apply these ideas to the recently discovered theta^+ exotic KN resonance and propose its interpretation as a novel kind of a pentaquark with an unusual color structure, J^P=1/2^+, I=0 and an antidecuplet of SU(3)_f. A rough mass estimate of this pentaquark is close to experiment.

Affiliated with

Also associated with

No associations

Rating

The Constituent Quark Model Revisited - Quark Masses, New Predictions for Hadron Masses and KN Pentaquark 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 The Constituent Quark Model Revisited - Quark Masses, New Predictions for Hadron Masses and KN Pentaquark, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Constituent Quark Model Revisited - Quark Masses, New Predictions for Hadron Masses and KN Pentaquark will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-323755