The parity-violating asymmetry in the weak decay of polarized hypernuclei

Journal Article · Thu May 01 04:00:00 EDT 1997 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.54387· OSTI ID:678808

Bennhold, C ^[1]; Ramos, A ^[2]

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1. Center for Nuclear Studies, Department of Physics, The George Washington University, Washington, District of Columbia20052 (United States)
2. Departament dEstructura i Constituents de la Materia, Facultat de Fisica, Diagonal 647, E-08028Barcelona (Spain)

The hypernuclear weak decay is examined in a shell model framework, using a complete strangeness-changing weak {Lambda}N{r_arrow}NN transition potential that includes the exchange of {pi}, K, {eta} as well as {rho}, {omega}, and K{sup {asterisk}}. The total and partial rates as well as the parity-violating asymmetries are compared to experimental data for light s- and p-shell nuclei. The inclusion of heavier mesons strongly influences the asymmetry which is found to agree with new KEK data on {sup 5}{sub {Lambda}}He with much reduced uncertainties. {copyright} {ital 1997 American Institute of Physics.}

• Sponsoring Organization: USDOE
• DOE Contract Number: FG02-95ER40907
• OSTI ID: 678808
• Report Number(s): CONF-970564--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 412; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
DECAY AMPLITUDES
HELIUM 5
HYPERNUCLEI
LAMBDA PARTICLES
POLARIZATION-ASYMMETRY RATIO
WEAK PARTICLE DECAY