Understanding Pentaquark States in QCD
Zhu, Shi-Lin
High Energy Physics - Phenomenology
High Energy Physics - Experiment
Nuclear Experiment
Nuclear Theory
الأصل · EN
We estimate the mass of the pentaquark state with QCD sum rules and find that pentaquark states with isospin I=0, 1, 2 lie close to each other around (1.55± 0.15) GeV. The experimentally observed baryon resonance Θ+ (1540) with S=+1 can be consistently identified as a pentaquark state if its Jᵖ=1 2-. Such a state is expected in QCD. If its parity is positive, this pentaquark state is really exotic. Now the outstanding issue is to determine its quantum numbers experimentally.
الترجمة العربية
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