Published March 4, 2005 | Version v1
Journal article Metadata-only

Asymmetries in the nonmesonic weak decay of polarized Λ hypernuclei

Creators

  • 1. Dipartimento di Fisica Teorica, Universita di Torino and INFN, Sezione di Torino, I-10125 Torino (Italy)
  • 2. Departament d'Estructura i Constituents de la Materia, Universitat de Barcelona, E-08028 Barcelona (Spain)

Description

The nonmesonic weak decay of polarized Λ hypernuclei is studied for the first time by taking into account, with a Monte Carlo intranuclear cascade code, the nucleon final state interactions. A one-meson-exchange model is employed to describe the Λ→N→nN processes in a finite nucleus framework. The relationship between the intrinsic Λ asymmetry parameter aΛ and the asymmetry aΛM accessible in experiments is discussed. A strong dependence of aΛM on nucleon final state interactions and detection threshold is obtained. Our results for aΛM are consistent with Λ11B→ and Λ12C→ data but disagree with observations in Λ5H→e

Additional details

Identifiers

DOI
10.1103/PhysRevLett.94.082501;
arXiv
arXiv:nucl-th/0410107v1;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
94
Journal Issue
8
Journal Page Range
p. 082501-082501.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36069077
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Descriptors DEI
ASYMMETRY; BORON 11; BOSON-EXCHANGE MODELS; CARBON 12; FINAL-STATE INTERACTIONS; HYDROGEN 5; HYPERNUCLEI; MONTE CARLO METHOD; NUCLEAR CASCADES; NUCLEON-HYPERON INTERACTIONS; NUCLEONS; WEAK INTERACTIONS
Descriptors DEC
BARYON-BARYON INTERACTIONS; BARYONS; BASIC INTERACTIONS; BORON ISOTOPES; CALCULATION METHODS; CARBON ISOTOPES; ELEMENTARY PARTICLES; ENERGY-LEVEL TRANSITIONS; EVEN-EVEN NUCLEI; FERMIONS; HADRON-HADRON INTERACTIONS; HADRONS; HYDROGEN ISOTOPES; INTERACTIONS; ISOTOPES; LIGHT NUCLEI; MATHEMATICAL MODELS; NUCLEAR FRAGMENTS; NUCLEI; ODD-EVEN NUCLEI; PARTICLE INTERACTIONS; PARTICLE MODELS; PERIPHERAL MODELS; STABLE ISOTOPES

Optional Information

Notes
(c) 2005 The American Physical Society