A recent experiment at LEAR, the CERN Low Energy Antiproton Ring, has provided very precise differential cross-section data for the View the MathML sourcep → View the MathML sourcen charge-exchange reaction. Extrapolating the data to the pion pole we have determined the charged-pion coupling constant to be fc2 = 0.071 ± 0.002 from the data at 601 MeV/c. Details of the fitting procedure are given, as well as results obtained when applying the same method to recent np → pn data.
Determination of the charged pion-nucleon coupling constant from pbarp -> nbar n differential cross-section
BRADAMANTE, FRANCO;BRESSAN, Andrea;MARTIN, ANNA
1995-01-01
Abstract
A recent experiment at LEAR, the CERN Low Energy Antiproton Ring, has provided very precise differential cross-section data for the View the MathML sourcep → View the MathML sourcen charge-exchange reaction. Extrapolating the data to the pion pole we have determined the charged-pion coupling constant to be fc2 = 0.071 ± 0.002 from the data at 601 MeV/c. Details of the fitting procedure are given, as well as results obtained when applying the same method to recent np → pn data.File in questo prodotto:
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