Investigation on the from QCD sum rules

Su, N.*; Chen, H.-X.*; Gubler, P. ; Hosaka, Atsushi

We investigate the recently observed baryon using QCD sum rules. By constructing P-wave baryon currents and performing spin projection and parity projection, we obtain the masses of the $J^P = 1/2^{-}$ and $3/2^{-}$ states as $M_{1/2^-} = 2.07^{+0.07}_{-0.07}$ GeV and $M_{3/2^-} = 2.05^{+0.09}_{-0.10}$ GeV, in good agreement with experiment. This suggests that is likely to be a negative parity P-wave excited state, though its spin remains undetermined and requires further study of its decay properties.

Language	:	English
Journal	:	Nuclear and Particle Physics Proceedings
Volume	:	347
Number	:
Pages	:	p.2 - 5
Publication Year/Month	:	2024/12
Meeting title	:	27th High-Energy Physics International Conference in Quantum Chromodynamis (QCD24)
Held date	:	2024/07
Location (city)	:	Montpellier
Location (country)	:	France
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Paper URL	:	https://doi.org/10.1016/j.nuclphysbps.2024.09.006
DOI for research data	:	Link to research data related to this paper/report.
Keywords	:	Omega Baryons; QCD sum rules
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Cooperating Institute	:	Southeast University; 大阪大学核物理研究センター

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Registration No. : BB20241808
JAEA Abstracts No. : 53000297
Paper Submission No. : 29087

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