Toward establishing the low-lying P-wave Σb states

In the present work, we analyze the P-wave singly heavy baryon spectrum belonging to 6(F) by combining the observations of the heavy baryon states, and restudy the strong decays of the 1P-wave Sigma(b) states within the j-j coupling scheme using the chiral quark model. We obtain that (i) the structure Sigma(b) (6097) observed in the Lambda(b)pi final state may arise from the overlapping of Sigma(b)vertical bar J(P) = 3-/2, 2 and Sigma(b)vertical bar J(P) = 5-/2, 2 . (ii) The broad structure Sigma(b)(6072) observed in the Lambda(b)pi pi final state may arise from the overlapping of Sigma(b)vertical bar J(P) = 1-/2, 1 and Sigma(b)vertical bar J(P) = 3-/2; 1 . (iii) The missing state Sigma(b)vertical bar J(P) = 1-/2, 0 is most likely to be a narrow state with a width of Gamma similar to 10 MeV, and mainly decays into the Lambda(b)pi channel.