Constraints on the threshold K(-) nuclear potential from FINUDA (A)Z(K(stop)(-), pi(-))(Lambda)(A)Z spectra

0365582 - ÚJF 2012 RIV NL eng J - Článek v odborném periodiku
Cieplý, Aleš - Friedman, E. - Gal, A. - Krejčiřík, Vojtěch
Constraints on the threshold K(-) nuclear potential from FINUDA (A)Z(K(stop)(-), pi(-))(Lambda)(A)Z spectra.
Physics Letters. B. Roč. 698, č. 3 (2011), s. 226-230. ISSN 0370-2693. E-ISSN 1873-2445
Grant CEP: GA ČR GA202/09/1441
Výzkumný záměr: CEZ:AV0Z10480505
Klíčová slova: LAMBDA-HYPERNUCLEI * DYNAMICS
Kód oboru RIV: BE - Teoretická fyzika
Impakt faktor: 3.955, rok: 2011

1s(Lambda) hypernuclear formation rates in stopped K(-) reactions on several p-shell targets are derived from hypernuclear formation spectra measured recently by the FINUDA Collaboration and are compared with calculated 1s(Lambda) formation rates based on a chirally motivated coupled channel model. The calculated rates are about 15% of the derived rates, and in contrast with previous calculations depend weakly on the depth of the threshold K(-) nuclear potential. The A dependence of the calculated 1s(Lambda) rates is in fair agreement with that of the derived 1s(Lambda), rates, showing a slight preference for a deep density dependent potential, Re V(K)-(rho(0)) similar to -(150-200) MeV, over a shallow potential, Re V(K)-(rho(0)) similar to -50 MeV.
Trvalý link: http://hdl.handle.net/11104/0200790