Weak production of Λ by the p n arrow p Λ reaction
Abstract
An experiment to measure the cross section and analyzing power of the p n arrow p Λ reaction is under progress. It is an inverse reaction of the nonmesonic decay of Λ hypernuclei, which gives us direct information of weak hyperon-nucleon interaction. A 400MeV polarized proton beam hits a target, where threshold of the p n arrow p Λ reaction is 370MeV. Since energy threshold of Λ K pair creation is much higher, detection of Λ must be always due to the p n arrow p Λ reaction. Recently a new beam line for the experiment has been designed and built in the west experimental hall at the Research Center for Nuclear Physics (RCNP), Osaka University. At this beam line, experiments to study performance of our detector system were carried out. We will present results of the performance test and the current status of our experiment.
- Publication:
-
APS Meeting Abstracts
- Pub Date:
- October 2001
- Bibcode:
- 2001APS..HAW.DC012M