Conférences et séminaires » Séminaire : The HypHI project at GSI/FAIR
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Présenté par le Dr T.R. SAITO (Gesellschaft für Schwerionenforschung, GSI, DARMSTADT, Germany)
le Jeudi 23 novembre 2006 à 16 h00
Salle de Visioconférences - Bâtiment 25
IPHC, 23 rue du Loess, Strasbourg-Cronenbourg
Studies on hypernuclei which are defined as nuclei with hyperon (baryon with at least one strange quark) give essential information on baryon-baryon interaction under flavor-SU(3). Since several models of neutron stars predict stable matters with hyperons, hypernuclear physics plays an important role in understanding neutron stars. Hypernuclei have been studied almost for five decades mainly by meson and electron beam induced spectroscopy with stable target materials. Due to the experimental techniques, observed hypernuclei so far are distributed around hypernuclei with beta-stable nuclear cores with protons and neutrons, and very proton- and neutron-rich hypernuclei have never been produces. Moreover, hypernuclear magnetic moments can never been measured with such experimental techniques. However, a heavy ion collision with projectile energies of a few A GeV could offer an opportunity to produce hypernuclei toward proton and neutron drip-lines and to measure hypernuclear magnetic moments directly.
The HypHI project at GSI/FAIR, which has been being prepared by the international HypHI collaboration, aims to perform precise hypernuclear spectroscopy with stable heavy ion beams and rare-isotope beams in order to investigate hypernuclei at extreme isospins, especially for neutron rich hypernuclei in order to study hyperon-neutron interaction in the neutron rich environment to obtain unique information related to the nature of neutron stars, and the final goal of the project is to measure hypernuclear magnetic moments with high energy stable heavy ion beams at FAIR. The physics motivation as well as the detail of the experimental technique will be discussed in the talk.
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