TY - JOUR
T1 - New quark relations for hadron masses and magnetic moments
T2 - A challenge for explanation from QCD
AU - Karliner, Marek
AU - Lipkin, Harry J.
N1 - Funding Information:
The research of one of us (M.K.) was supported in part by a grant from the Israel Science Foundation administered by the Israel Academy of Sciences and Humanities. The research of one of us (H.J.L.) was supported in part by the U.S. Department of Energy, Division of High Energy Physics, Contract W-31-109-ENG-38.
PY - 2007/6/28
Y1 - 2007/6/28
N2 - Prompted by the recent surprising results in QCD spectroscopy, we extend the treatment of the constituent quark model showing that mass differences and ratios have the same values when obtained from mesons and baryons. We obtain several new successful relations involving hadrons containing two and three strange quarks and hadrons containing heavy quarks and give a new prediction regarding spin splitting between doubly charmed baryons. We provide numerical evidence for an effective supersymmetry between mesons and baryons related by replacing a light antiquark by a light diquark. We also obtain new relations between quark magnetic moments and hadron masses. Limits of validity of this approach and disagreements with experiment in properties of the Σ and Ξ baryons are discussed as possible clues to a derivation from QCD.
AB - Prompted by the recent surprising results in QCD spectroscopy, we extend the treatment of the constituent quark model showing that mass differences and ratios have the same values when obtained from mesons and baryons. We obtain several new successful relations involving hadrons containing two and three strange quarks and hadrons containing heavy quarks and give a new prediction regarding spin splitting between doubly charmed baryons. We provide numerical evidence for an effective supersymmetry between mesons and baryons related by replacing a light antiquark by a light diquark. We also obtain new relations between quark magnetic moments and hadron masses. Limits of validity of this approach and disagreements with experiment in properties of the Σ and Ξ baryons are discussed as possible clues to a derivation from QCD.
UR - http://www.scopus.com/inward/record.url?scp=34250171174&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2007.04.063
DO - 10.1016/j.physletb.2007.04.063
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AN - SCOPUS:34250171174
SN - 0370-2693
VL - 650
SP - 185
EP - 192
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 2-3
ER -