If the new B_s0*(5700) has J^P=0+, its mass matches the chiral-doubling prediction for the parity partner of B_s, implying a narrow 1+ state at 5747 MeV.
Current mass dependence of the quark condensate and the constituent quark mass
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We discuss the current mass dependence of the basic quantities of the quark models -- constituent quark mass M and quark condensate i<psi^dagger psi >. The framework of the consideration is QCD instanton vacuum model.
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Chiral Doubling of Heavy-Light Hadrons and the New Beauty--Strange $B_{s0}^*(5700)^0$ Candidate
If the new B_s0*(5700) has J^P=0+, its mass matches the chiral-doubling prediction for the parity partner of B_s, implying a narrow 1+ state at 5747 MeV.