%0 Journal Article %1 karliner2020interpretation %A Karliner, Marek %A Rosner, Jonathan L. %D 2020 %K diquark doubly-strange-diquark omega_b_baryon %T Interpretation of excited $Ømega_b$ signals %U http://arxiv.org/abs/2005.12424 %X Recently LHCb reported the discovery of four extremely narrow excited $Ømega_b$ baryons decaying into $\Xi_b^0 K^-$. We interpret these baryons as bound states of a $b$-quark and a $P$-wave $ss$-diquark. For such a system there are exactly five possible combinations of spin and orbital angular momentum. We predict two of spin 1/2, two of spin 3/2, and one of spin 5/2, all with negative parity. We favor identifying the observed states as those those with spins 1/2 and 3/2, and give a range of predicted masses for the one with spin 5/2. We update earlier predictions for these states based on the five narrow excited $Ømega_c$ states reported by LHCb. An alternative picture of the states in which one of $J=1/2$ is extremely wide and hence not seen by LHCb is discussed.

@article{karliner2020interpretation, abstract = {Recently LHCb reported the discovery of four extremely narrow excited $\Omega_b$ baryons decaying into $\Xi_b^0 K^-$. We interpret these baryons as bound states of a $b$-quark and a $P$-wave $ss$-diquark. For such a system there are exactly five possible combinations of spin and orbital angular momentum. We predict two of spin 1/2, two of spin 3/2, and one of spin 5/2, all with negative parity. We favor identifying the observed states as those those with spins 1/2 and 3/2, and give a range of predicted masses for the one with spin 5/2. We update earlier predictions for these states based on the five narrow excited $\Omega_c$ states reported by LHCb. An alternative picture of the states in which one of $J=1/2$ is extremely wide and hence not seen by LHCb is discussed.}, added-at = {2020-05-27T18:31:39.000+0200}, author = {Karliner, Marek and Rosner, Jonathan L.}, biburl = {https://www.bibsonomy.org/bibtex/2b26efb2b84f7d09ec131d0a239e27abd/rkleiv}, description = {Interpretation of excited $\Omega_b$ signals}, interhash = {09a572adf15456ac56f49dca2d4839a1}, intrahash = {b26efb2b84f7d09ec131d0a239e27abd}, keywords = {diquark doubly-strange-diquark omega_b_baryon}, note = {cite arxiv:2005.12424Comment: 12 pages, 1 figure. To be submitted to Phys. Rev. D}, timestamp = {2020-05-27T18:31:39.000+0200}, title = {Interpretation of excited $\Omega_b$ signals}, url = {http://arxiv.org/abs/2005.12424}, year = 2020 }