TY - JOUR
T1 - A mass inequality for the Ξ* and Θ+ pentaquarks
AU - Karliner, Marek
AU - Lipkin, Harry J.
N1 - Funding Information:
Discussions with J.J. Dudek and F.E. Close are gratefully acknowledged. The research of one of us (M.K.) was supported in part by a grant from the United States–Israel Binational Science Foundation (BSF), Jerusalem. The research of one of us (H.J.L.) was supported in part by the US Department of Energy, Division of High Energy Physics, Contract W-31-109-ENG-38.
PY - 2004/8/5
Y1 - 2004/8/5
N2 - We derive an upper bound on the mass difference between the Ξ* and Θ+ pentaquarks which are the manifestly exotic members of the SU(3)f antidecuplet. The derivation is based on simple assumptions about SU(3)f symmetry breaking and uses the standard quantum mechanical variational method. The resulting rather robust bound is more than 20 MeV below the experimentally reported Ξ*-Θ+ mass difference, emphasizing the need for confirmation of the experimental mass values and placing strong constraints on quark models of the pentaquark structure.
AB - We derive an upper bound on the mass difference between the Ξ* and Θ+ pentaquarks which are the manifestly exotic members of the SU(3)f antidecuplet. The derivation is based on simple assumptions about SU(3)f symmetry breaking and uses the standard quantum mechanical variational method. The resulting rather robust bound is more than 20 MeV below the experimentally reported Ξ*-Θ+ mass difference, emphasizing the need for confirmation of the experimental mass values and placing strong constraints on quark models of the pentaquark structure.
UR - http://www.scopus.com/inward/record.url?scp=3042743707&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2004.05.052
DO - 10.1016/j.physletb.2004.05.052
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AN - SCOPUS:3042743707
SN - 0370-2693
VL - 594
SP - 273
EP - 276
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 - 3-4
ER -