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Very narrow excited $\Omega_c$ baryons · Around

2017

Very narrow excited $\Omega_c$ baryons

Karliner, Marek, Rosner, Jonathan L.

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Recently LHCb reported the discovery of five extremely narrow excited $\Omega_c$ baryons decaying into $\Xi_c^+ K^-$.

We interpret these baryons as bound states of a $c$-quark and a $P$-wave $ss$-diquark.
For such a system there are exactly five possible combinations of spin and orbital angular momentum.
The narrowness of the states could be a signal that it is hard to pull apart the two $s$-quarks in a diquark.

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2015

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Y. Yamaguchi, S. Ohkoda, A. Hosaka, T. Hyodo and S. Yasui, “Heavy quark symmetry in multihadron systems,”

2015

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Cited in the paper.

M. Padmanath and Nilmani Mathur, “Quantum numbers of recently discovered Ω c 0 \Omega_{c}^{0} baryons from lattice QCD,”

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W. Wang and R.-L. Zhu, “Interpretation of the newly observed Ω c 0 \Omega_{c}^{0} resonances,”

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Z. G. Wang, “Analysis of the Ω c ( 3000 ) \Omega_{c}(3000) , Ω c ( 3050 ) \Omega_{c}(3050) , Ω c ( 3066 ) \Omega_{c}(3066) , Ω c ( 3090 ) \Omega_{c}(3090) and Ω c ( 3119 ) \Omega_{c}(3119) with QCD sum rules,”

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B. Chen and X. Liu, “Six Ω c 0 \Omega_{c}^{0} states discovered by LHCb as new members of 1 P 1P and 2 S 2S charmed baryons,”

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T. M. Aliev, S. Bilmis and M. Savci, “Are the new excited Ω c \Omega_{c} baryons negative parity states?,”

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M. Karliner, S. Nussinov and J. L. Rosner, “ Q Q Q ¯ Q ¯ QQ\bar{Q}\bar{Q} states: masses, production, and decays,”

2017

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