skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: ELASTIC-DIFFERENTIAL CROSS SECTION OF $pi$$sup +$ + p AT 1.5, 2.0, AND 2.5 Bev/c

Abstract

Elastic-scattering angular distributions are measured for rature of the d /sup +/ + p scattering at 1.5, 2.0, and 2.5 Bev/c, using spark chambers to detect scattered pions and protons. A bump that decreases in amplitude with increasing momentum is observed in the backward hemisphere in the 1.5- and 2.0Bev/ c distributions, but is not observed in the 2.5-Bev/c distributions. It appears reasonable to attribute this phenomenon to the 1.46-Bev/c resonance observed in the rature of the d /sup +/ + p total cross section. The data are compared with rature of the d /sup -/ + p data and are found to support the theoretical prediction that the scattering cross sections for both charge states should become equal at high energies. The angular distributions are fit with a power series in cos F * and the extrapolated values for the scattering cross section in the backward direction are compared with the calculation of the neutronexchange pole contribution to the cross section. The elementary'' neutron-pole term contribution is calculated to be 90 mb/sr at 2.0 Bev/c, in violent disagreement with the extrapolated value, sup 14/ recover 0.5 mb/sr. (auth)

Authors:
; ; ;
Publication Date:
Research Org.:
Univ. of California, Berkeley
OSTI Identifier:
4737951
Report Number(s):
UCRL-10391
Journal ID: PHRVA; 0031-899X
NSA Number:
NSA-17-019126
Resource Type:
Journal Article
Journal Name:
Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
Additional Journal Information:
Journal Volume: Vol: 130; Other Information: UCRL-10391. Orig. Receipt Date: 31-DEC-63
Country of Publication:
United States
Language:
English
Subject:
PHYSICS; ANGULAR DISTRIBUTION; CROSS SECTIONS; INTERACTIONS; MEASURED VALUES; MOMENTUM; NEUTRONS; NUMERICALS; PIONS; PROTONS; RESONANCE; SCATTERING; SPARK CHAMBERS

Citation Formats

Cook, V, Cork, B, Holley, W R, and Perl, M L. ELASTIC-DIFFERENTIAL CROSS SECTION OF $pi$$sup +$ + p AT 1.5, 2.0, AND 2.5 Bev/c. United States: N. p., 1963. Web. doi:10.1103/PhysRev.130.762.
Cook, V, Cork, B, Holley, W R, & Perl, M L. ELASTIC-DIFFERENTIAL CROSS SECTION OF $pi$$sup +$ + p AT 1.5, 2.0, AND 2.5 Bev/c. United States. doi:10.1103/PhysRev.130.762.
Cook, V, Cork, B, Holley, W R, and Perl, M L. Mon . "ELASTIC-DIFFERENTIAL CROSS SECTION OF $pi$$sup +$ + p AT 1.5, 2.0, AND 2.5 Bev/c". United States. doi:10.1103/PhysRev.130.762.
@article{osti_4737951,
title = {ELASTIC-DIFFERENTIAL CROSS SECTION OF $pi$$sup +$ + p AT 1.5, 2.0, AND 2.5 Bev/c},
author = {Cook, V and Cork, B and Holley, W R and Perl, M L},
abstractNote = {Elastic-scattering angular distributions are measured for rature of the d /sup +/ + p scattering at 1.5, 2.0, and 2.5 Bev/c, using spark chambers to detect scattered pions and protons. A bump that decreases in amplitude with increasing momentum is observed in the backward hemisphere in the 1.5- and 2.0Bev/ c distributions, but is not observed in the 2.5-Bev/c distributions. It appears reasonable to attribute this phenomenon to the 1.46-Bev/c resonance observed in the rature of the d /sup +/ + p total cross section. The data are compared with rature of the d /sup -/ + p data and are found to support the theoretical prediction that the scattering cross sections for both charge states should become equal at high energies. The angular distributions are fit with a power series in cos F * and the extrapolated values for the scattering cross section in the backward direction are compared with the calculation of the neutronexchange pole contribution to the cross section. The elementary'' neutron-pole term contribution is calculated to be 90 mb/sr at 2.0 Bev/c, in violent disagreement with the extrapolated value, sup 14/ recover 0.5 mb/sr. (auth)},
doi = {10.1103/PhysRev.130.762},
journal = {Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D},
number = ,
volume = Vol: 130,
place = {United States},
year = {1963},
month = {4}
}