Isospin dependence of pion absorption on nucleon pairs at T/sub. pi. / = 65 MeV

Journal Article · Mon Apr 02 04:00:00 EST 1984 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.52.1203· OSTI ID:7000126

Moinester, M A; Gill, D R; Vincent, J; Ashery, D; Levenson, S; Alster, J; Altman, A; Lichtenstadt, J; Piasetzky, E; Aniol, K A

Angular distributions of differential cross sections were measured for the first time for pion absorption on a T = 1, S = 0 nucleon pair and for absorption on a T = 0, S = 1 pair in the /sup 3/He nucleus. A large isospin dependence is observed in the differential cross sections. The ratio of cross sections sigma(/sup 3/He(..pi../sup +/,2p))/sigma( /sup 3/He(..pi../sup -/,pn)) is 15.3 +- 1.2. The results show evidence of an isoscalar component of the final state in the reaction /sup 3/He(..pi../sup -/,pn)n, which cannot be mediated by ..delta.. resonance formation.

• Research Organization: TRIUMF, Vancouver, British Columbia, Canada V6T2A3
• OSTI ID: 7000126
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 52:14; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

651225* -- Nuclear Properties & Reactions
A=1-5
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ABSORPTION
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
CAPTURE
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
FUNCTIONS
HADRON REACTIONS
HADRONS
HELIUM 3 TARGET
ISOSPIN
LEGENDRE POLYNOMIALS
MESON REACTIONS
MEV RANGE
MEV RANGE 10-100
NUCLEAR REACTIONS
PARITY
PARTICLE PROPERTIES
PION REACTIONS
POLYNOMIALS
PROTON SPECTRA
QUANTUM NUMBERS
RESONANCE PARTICLES
SPECTRA
SPIN
TARGETS