English

K$^-$ absorption on two nucleons and ppK$^-$ bound state search in the $\Sigma^0$p final state

Nuclear Experiment 2016-06-22 v1

Abstract

We report the measurement of K^- absorption processes in the Σ0\Sigma^0p final state and the first exclusive measurement of the two nucleon absorption (2NA) with the KLOE detector. The 2NA process without further interactions is found to be 12\% of the sum of all other contributing processes, including absorption on three and more nucleons or 2NA followed by final state interactions with the residual nucleons. We also determine the possible contribution of the ppK^- bound state to the Σ0\Sigma^0p final state. A yield of ppK/Kstop^- /\mathrm{K^-_{stop}} is found to be (0.044±0.009stat0.005+0.004syst)102(0.044 \pm 0.009\, stat ^{+ 0.004} _{- 0.005} \,syst) \cdot 10^{-2} but its statistical significance based on an F-test is only 1σ\sigma.

Keywords

Cite

@article{arxiv.1511.04496,
  title  = {K$^-$ absorption on two nucleons and ppK$^-$ bound state search in the $\Sigma^0$p final state},
  author = {O. Vazquez Doce and L. Fabbietti and M. Cargnelli and C. Curceanu and J. Marton and K. Piscicchia and A. Scordo and D. Sirghi and I. Tucakovic and S. Wycech and J. Zmeskal and A. Anastasi and F. Curciarello and E. Czerwinski and W. Krzemien and G. Mandaglio and M. Martini and P. Moskal and V. Patera and E. Perez del Rio and M. Silarski},
  journal= {arXiv preprint arXiv:1511.04496},
  year   = {2016}
}