# Strangeness in Nuclei and in Neutron Stars

May 20 – 21, 2015
Dipartimento di Fisica, Universita di Pisa
Europe/Rome timezone

## K- four nucleon absorption process studies through the Λt channel

May 21, 2015, 12:00 PM
30m
N. 131, building C (Dipartimento di Fisica, Universita di Pisa)

### N. 131, building C

#### Dipartimento di Fisica, Universita` di Pisa

Largo Bruno Pontecorvo, 3, Pisa (Italy)

### Speaker

Alessandro Scordo (LNF)

### Description

The study of the low-energy negatively charged kaons interactions with the nuclear matter will be presented. In particular, the interactions of the kaons produced at the DAΦNE collider with the He nuclei present in the drift chamber gas and with the C nuclei contained in the drift chamber wall of the KLOE detector, generating the Λt final state are studied. This channel gave us the possibility to investigate the K- four nucleon absorption (4NA), a process which is poorly studied by other experimental and theoretical works. Dedicated MC simulations of the 4NA of the K- in He and C are performed and the experimentally extracted invariant mass, momentum and angular distributions spectra were fitted, in order to obtain for the first time the absolute value of the BR and the σ (100 MeV/c) for the 4NA process leading to the Λt pair in the final state.

### Primary author

Alessandro Scordo (LNF)

 Slides