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Λ hypernuclear production in (Kstop−,π) reactions reexamined

V. Krejčiřík1,2,*, A. Cieplý2,†, and A. Gal3,‡

  • 1Faculty of Mathematics and Physics, Charles University, 12116 Prague, Czech Republic
  • 2Nuclear Physics Institute, 25068 Řež, Czech Republic
  • 3Racah Institute of Physics, The Hebrew University, 91904 Jerusalem, Israel

  • *v.krejcirik@ujf.cas.cz
  • †cieply@ujf.cas.cz
  • ‡avragal@vms.huji.ac.il
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Phys. Rev. C 82, 024609 – Published 20 August, 2010

DOI: https://doi.org/10.1103/PhysRevC.82.024609

Abstract

Distorted-wave impulse approximation calculations of Λ hypernuclear production rates in stopped K− reactions on several p-shell targets used recently in experiments by the FINUDA Collaboration are reported. Chirally motivated K−N→πΛ in-medium transition amplitudes are employed, and the sensitivity of the calculated rates to the initial K−-atomic wave functions and final pion distorted waves is studied. The calculated rates are compared with measured rates, wherever available, which confirm earlier observations that (i) the calculated rates are generally lower than the measured rates, and (ii) the deeper the K−-nuclear potential, the worse the discrepancy. The A dependence of the calculated 1sΛ production rates is discussed, providing a useful tool to resolve the issue of depth of the K−-nuclear potential near threshold.

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Phys. Rev. C 82, 024609– Published 20 August, 2010
  • Received 13 May 2010

© 2010 American Physical Society

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