π+-Electroproduction of hydrogen near threshold at four-momentum transfers of 0.2, 0.4 and 0.6 GeV2期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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π⁺-Electroproduction of hydrogen near threshold at four-momentum transfers of 0.2, 0.4 and 0.6 GeV²

Authors:	P Brauel F-W Büsser Th Canzler D Cords WR Dix R Felst G Grindhammer W-D Kollmann H Krehbiel J Meyer G Weber

Institution:	1. Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany;2. II. Institut für Experimentalphysik der Universität hamburg, Germany

Abstract:	The reaction e + p → e′ + π⁺ + n was measured near the one pion threshold, detecting the final electron and neutron in coincidence for values of q² = 0.2, 0.4 and 0.6 GeV². The normalized axial vector form factor to the nucleon $F_{A} (q^{2}) F_{A} (0)$ was determined from the data within a theoretical framework based on PCAC and current algebra.

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