S. Tomassini

First results on 12ΛC production at DAΦNE

Lambda-hypernuclei are produced and studied, with the FINUDA spectrometer, for the first time at an e+e- collider: DAPHNE, the Frascati phi-factory. The slow negative kaons from phi(1020) decay are stopped in thin (0.2 g/cm^2) nuclear targets, and Lambda-hypernuclei formation is detected by measuring the momentum of the outgoing pi^-. A preliminary analysis on 12Lambda-C shows an energy resolution of 1.29 MeV FWHM on the hypernuclear levels, the best obtained so far with magnetic spectrometers at hadron facilities. Capture rates for the ground state and the excited ones are reported, and compared with previous experiments.

Correlated Lambda d pairs from the K(stop)(-)A ->Lambda d A ' reaction

Correlated Lambda d pairs emitted after the absorption of negative kaons at rest K-stop(-) A -> Lambda dA in light nuclei Li-6 and C-12 stop C are studied. A-hyperons and deuterons are found to be preferentially emitted in opposite directions. The Lambda d invariant mass spectrum of Li-6 shows a bump whose mass is3251 +/- 6 MeV/c(2). The bump mass (binding energy), width and yield are reported. The appearance of a bump is discussed in the realm of the [K3N] clustering process in nuclei. The experiment was performed with the FINUDA spectrometer at DA Phi DNE (LNF)

Search for HΛ6 and HΛ7 with the (Kstop−,π+) reaction

The production of neutron rich

Correlated Λd pairs from the Kstop−A→ΛdA′ reaction

Lambda

Correlated Lambda d pairs from the K-(stop) A ---> Lambda d A-prime reaction

-hypernuclei via the (

Correlated Λd pairs from the K stop − A → Λ d A ′ reaction

K^-_stop

The A(Kstop−, Λd)A′ reaction, a tool to observe [\overline K NNN] clusters

,

A study of Λ 7 Li production with FINUDA

pi^+

Search for (6)(Lambda)H and (7)(Lambda)H with the (K(stop)(-), pi(+)) reaction

) reaction has been studied using data collected with the FINUDA spectrometer at the DA

Search for H Λ 6 and H Λ 7 with the ( K stop − , π + ) reaction

Phi