Speaker
Description
The mass spectra of singly bottom baryon Ω−b is determined using the Hypercentral Constituent Quark Model [1]. We first determine ground state masses and then established the radial(L=0) and orbital (L=1,2,3) excited state masses. The confinement potential is assumed in the hyper central co-ordinates of the coulomb plus power potential for un- equal masses. We also introduced first order correction to the potential. Ω − b with quark content ssb has SU(3) 6 F symmetry. Our calculated mass spectra for Ω − b is obtained by varying potential index ν value from 0.5 to 2.0. Only ground state is found till now experimentally [2] m Ω − = 6048.8 ± 3.2 MeV with J P = b 1 + . 2 + Recent Lattice QCD re- sults [3] are m Ω − (1/2) + =6056(47)(20) MeV and m Ω − (3/2) =6085(47)(20) are close to b b our results m Ω − (1/2) + =6048 MeV and m Ω − (3/2) + =6086 MeV at potential index ν =1.0. b b Radially excited states are calculate for J P = calculated for 5 + 7 + 1 − 3 − 5 − 7 − 9 − , 2 , 2 , 2 , 2 , 2 , 2 2 1 + 1 + 3 + , 2 , 2 2 and orbitally excited states are at ν=1.0. We also plot Regge trajectory(M 2 → n) for higher excited states. We also compare our results with other theoretical models [4, 5, 6] and they are in good agreement.
