Coupled channels dynamics in the generation of the $$\Omega (2012)$$ resonance |
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Authors: | R Pavao E Oset |
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Institution: | 1.Departamento de Física Teórica and IFIC,Centro Mixto Universidad de Valencia-CSIC Institutos de Investigación de Paterna,Valencia,Spain |
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Abstract: | We look into the newly observed \(\Omega (2012)\) state from the molecular perspective in which the resonance is generated from the \(\bar{K} \Xi ^*\), \(\eta \Omega \) and \(\bar{K} \Xi \) channels. We find that this picture provides a natural explanation of the properties of the \(\Omega (2012)\) state. We stress that the molecular nature of the resonance is revealed with a large coupling of the \(\Omega (2012)\) to the \(\bar{K} \Xi ^*\) channel, that can be observed in the \(\Omega (2012) \rightarrow \bar{K} \pi \Xi \) decay which is incorporated automatically in our chiral unitary approach via the use of the spectral function of \(\Xi ^*\) in the evaluation of the \(\bar{K} \Xi ^*\) loop function. |
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