Pion absorption in /sup 3,4/He and. pi. N resonances

Journal Article · Mon Jun 15 04:00:00 EDT 1981 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.46.1562· OSTI ID:6445912

Orphanos, L; Kaellne, J; Altemus, R; Gugelot, P C; McCarthy, J S; Minehart, R C; Gram, P A.M.; Hoeistad, B; Morris, C L; Wadlinger, E A; Perdrisat, C

The cross sections of /sup 3,4/He(..pi../sup -/,n)/sup 2,3/H have been measured at 285, 428, 525, and 575 MeV extending the information on the energy dependence beyond the region previously known (50 --300 MeV). The cross sections beyond the region of the ..delta.. resonance are found to decrease less rapidly than that of the elementary ..pi..d..-->..pp process. This energy dependence suggests that pion absorption in a nucleus is associated with ..pi..+N (off-shell) scattering which includes I = 1/2 ..pi..N resonances that are strongly suppressed in ..pi..d..-->..pp.

• Research Organization: University of Virginia, Charlottesville, Virginia 22901
• OSTI ID: 6445912
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 46:24; 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
BARYON RESONANCES
BARYONS
CAPTURE
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DELTA-1236 RESONANCES
ELEMENTARY PARTICLES
ENERGY DEPENDENCE
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
HADRON REACTIONS
HADRONS
HELIUM 3 TARGET
HELIUM 4 TARGET
INFORMATION
MESON REACTIONS
MEV RANGE
MEV RANGE 100-1000
N RESONANCES
NEUTRONS
NUCLEAR REACTIONS
NUCLEONS
NUMERICAL DATA
PION MINUS REACTIONS
PION REACTIONS
RESONANCE PARTICLES
TARGETS