3rd Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Volume 54, Number 10
Tuesday–Saturday, October 13–17, 2009;
Waikoloa, Hawaii
Session AA: Nuclear Physics: Highlights and Prospects I
8:45 AM–11:00 AM,
Wednesday, October 14, 2009
Room: Monarchy Ballroom
Chair: Virginia R. Brown, Massachusetts Institute of Technology
Abstract ID: BAPS.2009.HAW.AA.2
Abstract: AA.00002 : Strangeness Nuclear Physics at the J-PARC era
9:00 AM–9:45 AM
Preview Abstract
Abstract
Author:
Tomofumi Nagae
(Kyoto University)
Strangeness degrees of freedom do not show up prominently in the standard
nuclear physics at low energies. However, by explicitly implanting the
strangeness in a nucleus, we can extend our scope of hadron many-body
systems into the flavor SU(3) world and create new types of hadronic
systems. In many cases, the extensions are not so trivial, and we need to
reconsider our basic understandings of hadron physics which have been
effective in the ordinary nuclear physics.
After the shutdown of BNL-AGS and KEK-PS in US and Japan for strangeness
nuclear physics, experimental researches have been conducted at Jefferson
Laboratory in US, and LNF in Italy in the last several years, and are now
about to start at GSI and Mainz in Germany. Recent topics are summarized in
this talk.
In Japan, construction of a high-intensity accelerator complex, Japan Proton
Accelerator Research Complex (J-PARC), is completed. Beam commissioning of
the slow-extraction beam from the J-PARC main proton synchrotron started
from January, 2009. The beam was successfully extracted and transported to
the Hadron Experimental Hall on January 27. The first secondary-beam
production was confirmed on February 11 at the K1.8-branch beam line in the
hall. Although we need a lot of work to be completed before the beam would
be available for experimental users, we believe this is the start of the
J-PARC era to open new research fields in strangeness nuclear physics.
The K$^{-}$ beams with the highest intensity in the world enable us to carry
out various interesting experimental subjects; the (K$^{-}$,K$^{+})$
missing-mass spectroscopy to discover $\Xi $ hypernuclei, hypernuclear
gamma-ray spectroscopy, search for kaonic nuclei, and so on. New detector
systems such as the SKS+ spectrometer, Hyperball-J detector, and Cylindrical
Detector System (CDS) are now in preparation. Present status of the
experiments, our initial physics goals at J-PARC and the perspectives are
discussed.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2009.HAW.AA.2