Prog. Theor. Phys. Vol. 87 No. 3 (1992) pp. 781-784
Where Is the Σb?
Department of Physics, Meiji-Gakuin University, Totsuka 244
*Department of Physics, Tokyo University of Mercantile Marine, Tokyo 135
**Department of Physics, Nippon Ika University, Kawasaki 211
***Department of Physics, Asia University, Musasino 180
(Received November 15, 1991)
The masses of s-wave bottom baryons are discussed in a semirelativistic quark model, on the basis of a quark-distance relation. We stress that the Σb is heavier than Ξ′b(b[su], b[sd]) containing the antisymmetric su(or sd) subsystem. We conclude that the two candidates for Λb with very different masses are different states; Basile et al.'s result 5425+175-75 MeV is Λb(b[du]), but Arenton et al.'s result ∼5750 MeV is Ξ′0b(b[su]).
DOI : 10.1143/PTP.87.781
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We would like to thank Dr. M. Gupta for suggesting this reference.
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