The {Lambda} hypernuclear spectroscopy with the SKS spectrometer at KEK 12 GeV PS

Technical Report · Mon Aug 01 04:00:00 EDT 1994

OSTI ID:52857

Ajimura, S ^[1]; Aoki, K ^[2]; Bhang, H ^[3]

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1. Osaka Univ. (Japan). Dept. of Physics
2. National Lab. for High Energy Physics, Ibaraki (Japan)
3. Seoul National Univ. (Korea, Republic of). Dept. of Physics; and others

A spectroscopic study of {Lambda} hypernuclei by the ({pi}{sup +}, K{sup +}) reaction has been performed for the wide hypernuclear mass range using a new superconducting kaon spectrometer (INS-SKS) at the KEK 12 GeV PS. A {sub {Lambda}}{sup 12}C spectrum with 2 MeV (FWHM) energy resolution was measured and core excited states of {sub {Lambda}}{sup 12}C were clearly identified for the first time. It is discussed that the excitation energies and cross sections of these states will be closely related with the choice of {Lambda}N interaction models as well as hypernuclear structure. Hypernuclear spectra of {sub {Lambda}}{sup 10}B, {sub {Lambda}}{sup 28}Si, {sub {Lambda}}{sup 89}Y, {sub {Lambda}}{sup 139}La and {sub {Lambda}}{sup 208}Pb were also obtained and binding energies of a {Lambda} hyperon were deduced for each {Lambda} orbital. The mass number dependence of the {Lambda} binding energies is, within the present experimental errors, consistent with a calculation based on the Woods-Saxon potential.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States); Japan Society for the Promotion of Science, Tokyo (Japan)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 52857
• Report Number(s): BNL--61654; CONF-940725--6; ON: DE95010413
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BINDING ENERGY
BORON 10
CARBON 12
ENERGY LEVELS
EXPERIMENTAL DATA
HYPERNUCLEI
HYPERONS
KAON PLUS REACTIONS
LANTHANUM 139
LEAD 208
MAGNETIC SPECTROMETERS
PION PLUS REACTIONS
SILICON 28
SPECTRA
YTTRIUM 89