Abstract
We provide a series of arguments which support the idea that the peak seen in the \( \gamma\) p \( \rightarrow\) K + \( \Lambda\) reaction around 1920MeV should correspond to the recently predicted state of J P = 1/2+ as a bound state of K \( \bar{{K}}\) N with a mixture of a 0(980)N and f 0(980)N components. At the same time we propose polarization experiments in that reaction as a further test of the prediction, as well as a study of the total cross-section for \( \gamma\) p \( \rightarrow\) K + K - p at energies close to threshold and of dσ/dM inv for invariant masses close to the two-kaon threshold.
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Martínez Torres, A., Khemchandani, K.P., Meißner, U.G. et al. Searching for signatures around 1920 MeV of a N* state of three hadron nature. Eur. Phys. J. A 41, 361–368 (2009). https://doi.org/10.1140/epja/i2009-10834-2
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DOI: https://doi.org/10.1140/epja/i2009-10834-2