Observation of. lambda. -hypernuclei in the reaction /sup 12/C(. pi. /sup +/,K/sup +/)/sub. lambda. //sup 12/C
The observation of ..lambda..-hypernuclear levels in /sub ..lambda..//sup 12/C by associated production through the (..pi../sup +/,K/sup +/) reaction is reported. Spectrometers used in the measurements are discussed. The /sub ..lambda..//sup 12/C excitation energy spectra were recorded at laboratory scattering angles of 5.6/sup 0/, 10.3/sup 0/, and 15.2/sup 0/. The spectra show two major peaks - one attributed to the ground state, and one about 11 MeV higher in excitation. The peak near 11 MeV excitation energy is believed to be almost entirely composed of a multiplet of three J/sup ..pi../ = 2/sup +/ states. Relativistic DWBA calculations imply support for the expectation that higher spin states are preferentially populated in the (..pi../sup +/,K/sup +/) reaction, compared to the (K/sup -/,..pi../sup -/) reaction in which lower spin states are excited. 29 refs., 40 figs.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6052007
- Report Number(s):
- LA-10614-T; ON: DE86007211
- Country of Publication:
- United States
- Language:
- English
Similar Records
Observation of. lambda. -hypernuclei in the reaction /sup 12/C(. pi. /sup +/,K/sup +/)/sub. lambda. //sup 12/C
Observation of. lambda. -hypernuclei in the reaction /sup 12/C(. pi. /sup +/,K/sup +/)1 /sub. lambda. //sup 2/C
Spectroscopic study of {sub {Lambda}}{sup 10}B, {sub {Lambda}}{sup 12}C, {sub {Lambda}}{sup 28}Si, {sub {Lambda}}{sup 89}Y, {sub {Lambda}}{sup 139}La, and {sub {Lambda}}{sup 208}Pb by the ({pi}{sup +},{ital K}{sup +}) reaction
Thesis/Dissertation
·
Mon Dec 31 23:00:00 EST 1984
·
OSTI ID:5173613
Observation of. lambda. -hypernuclei in the reaction /sup 12/C(. pi. /sup +/,K/sup +/)1 /sub. lambda. //sup 2/C
Journal Article
·
Sun Mar 24 23:00:00 EST 1985
· Phys. Rev. Lett.; (United States)
·
OSTI ID:5902017
Spectroscopic study of {sub {Lambda}}{sup 10}B, {sub {Lambda}}{sup 12}C, {sub {Lambda}}{sup 28}Si, {sub {Lambda}}{sup 89}Y, {sub {Lambda}}{sup 139}La, and {sub {Lambda}}{sup 208}Pb by the ({pi}{sup +},{ital K}{sup +}) reaction
Journal Article
·
Thu Feb 29 23:00:00 EST 1996
· Physical Review, C
·
OSTI ID:279121
Related Subjects
651325* -- Nuclear Properties & Reactions
A=6-19
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BARYONS
BORN APPROXIMATION
CARBON 12 TARGET
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DATA ACQUISITION
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
DRIFT CHAMBERS
DWBA
ELEMENTARY PARTICLES
ENERGY SPECTRA
EXPERIMENTAL DATA
FERMIONS
HADRON REACTIONS
HADRONS
HYPERNUCLEI
HYPERONS
INFORMATION
IONIZATION CHAMBERS
LAMBDA BARYONS
LAMBDA PARTICLES
MEASURING INSTRUMENTS
MESON REACTIONS
MULTIWIRE IONIZATION CHAMBERS
MULTIWIRE PROPORTIONAL CHAMBERS
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
OPTICAL MODELS
PION PLUS REACTIONS
PION REACTIONS
POSITION SENSITIVE DETECTORS
PROPORTIONAL COUNTERS
RADIATION DETECTORS
SPECTRA
SPECTROMETERS
STRANGE PARTICLES
STRANGENESS-EXCHANGE REACTIONS
TARGETS
THEORETICAL DATA
TIME-OF-FLIGHT SPECTROMETERS
A=6-19
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BARYONS
BORN APPROXIMATION
CARBON 12 TARGET
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DATA ACQUISITION
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
DRIFT CHAMBERS
DWBA
ELEMENTARY PARTICLES
ENERGY SPECTRA
EXPERIMENTAL DATA
FERMIONS
HADRON REACTIONS
HADRONS
HYPERNUCLEI
HYPERONS
INFORMATION
IONIZATION CHAMBERS
LAMBDA BARYONS
LAMBDA PARTICLES
MEASURING INSTRUMENTS
MESON REACTIONS
MULTIWIRE IONIZATION CHAMBERS
MULTIWIRE PROPORTIONAL CHAMBERS
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
OPTICAL MODELS
PION PLUS REACTIONS
PION REACTIONS
POSITION SENSITIVE DETECTORS
PROPORTIONAL COUNTERS
RADIATION DETECTORS
SPECTRA
SPECTROMETERS
STRANGE PARTICLES
STRANGENESS-EXCHANGE REACTIONS
TARGETS
THEORETICAL DATA
TIME-OF-FLIGHT SPECTROMETERS