DETERMINATION OF THE CHARGED PION-NUCLEON COUPLING-CONSTANT FROM (P)OVER-BAR-P-](N)OVER-BAR-N DIFFERENTIAL CROSS-SECTION

Authors
BRADAMANTE F BRESSAN A LAMANNA M MARTIN A
Citation
F. Bradamante et al., DETERMINATION OF THE CHARGED PION-NUCLEON COUPLING-CONSTANT FROM (P)OVER-BAR-P-](N)OVER-BAR-N DIFFERENTIAL CROSS-SECTION, Physics letters. Section B, 343(1-4), 1995, pp. 431-435
Citations number
19
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
343
Issue
1-4
Year of publication
1995
Pages
431 - 435
Database
ISI
SICI code
0370-2693(1995)343:1-4<431:DOTCPC>2.0.ZU;2-C
Abstract
A recent experiment at LEAR, the CERN Low Energy Antiproton Ring, has provided very precise differential cross-section data for the ($) over bar pp --> ($) over bar nn charge-exchange reaction. Extrapolating th e data to the pion pole we have determined the charged-pion coupling c onstant to be f(c)(2) = 0.071 +/- 0.002 from the data at 601 MeV/c. De tails of the fitting procedure are given, as well as results obtained when applying the same method to recent np --> pn data.