Speaker
Germano Bonomi
(University of Brescia and INFN Pavia)
Description
The creation of a hypernucleus requires the injection of strangeness into the nucleus. This is possible in different ways, mainly using a π+ or a K− beam on fixed targets. A complete review of hypernuclei production by K- at rest will be presented. When a K- stops inside a nucleus it can undergo the so called "strangeness-exchange reaction", in which a neutron is replaced by a Lambda with the emission of a pion. By precisely studying the outgoing pions both the binding energy and the formation probability of the hypernuclei can be measured. New measurements from the FINUDA experiment on Li7, Be9 and C13, coupled with previous measurements on C12 and O16, allowed for the first time the study of the formation of hypernuclei as a function of the atomic mass number A. The new measurements also offered the possibility of disentangling the effects due to atomic wave-function of the captured K− from those due to the pion optical nuclear potential and from those due to the specific hypernuclear states. These new results on the study of the hypernuclei production by K- at rest will also be presented and discussed.
Primary author
Germano Bonomi
(University of Brescia and INFN Pavia)
