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Abstract
We observe that four peaks seen in the high energy part of the $\Omega_b$ spectrum of the recent LHCb experiment are in remarkable agreement with predictions made for molecular $\Omega_b$ states stemming from the meson-baryon interaction, with an approach that applied to the $\Omega_c$ states gave rise to three states in good agreement with experiment in masses and widths. While the statistical significance of the peaks prevents us from claims of states at the present time, the agreement found should be an incentive to look at this experiment with increased statistics to give an answer to this suggestive idea.
Highlights
The recent LHCb experiment on the Ωb excited spectrum has reported four new peaks that have been associated with new excited Ωb states, Ωbð6316Þ, Ωbð6330Þ, Ωbð6340Þ, and Ωbð6350Þ [1]
We observe that four peaks seen in the high energy part of the Ωb spectrum of the recent LHCb experiment are in remarkable agreement with predictions made for molecular Ωb states stemming from the meson-baryon interaction, with an approach that applied to the Ωc states gives rise to three states in good agreement with experiment in masses and widths
We showed that the results obtained in Ref. [4] for molecular Ωb states from the meson-baryon interaction in coupled channels constructed by analogy to the Ωc states of Ref. [47], which agree with the experimentally observed states [46], give rise to four states with energies in remarkable agreement with some peaks that can be observed in the high energy part of the Ωb experimental spectrum [1]
Summary
The recent LHCb experiment on the Ωb excited spectrum has reported four new peaks that have been associated with new excited Ωb states, Ωbð6316Þ, Ωbð6330Þ, Ωbð6340Þ, and Ωbð6350Þ [1]. [2], using QCD sum rules, the suggestion is made that the states correspond to ordinary In this short paper, we discuss that these structures do not correspond to molecular states originated from the mesonbaryon interaction. We call attention to four other peaks observed at higher energy, albeit with low statistics, which remarkably agree with predictions made with the molecular picture [4] These peaks occur at 6402, 6427, 6468, and 6495 MeV, and the statistical significance is equivalent to that of the peak at 6315.64 MeV, which has given name to one of the states claimed, the Ωbð6316Þ. Most of the works on quark models calculate the mass spectra of the states but do not evaluate decay widths. We discuss the origin of the masses for the molecular Ωb states in connection with the spectrum of the related Ωc states
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