Hard Exclusive Electroproduction of Pions(11)
时间：2026-01-14
We investigate the exclusive electroproduction of pi^+ mesons from nucleons. To leading twist, leading order alpha_s accuracy the corresponding production amplitude can be decomposed into pseudovector and pseudoscalar parts. Both can be expressed in terms
Figure1:Di erentialproductioncrosssectionforexclusiveπ+productionthroughthescatteringoflongitudinallypolarizedphotonsfromprotonsatt=tminandQ2=10GeV2.Thedottedanddot-dashedcurvesshowthepseudovectorandpseudoscalarcontributions,respectively.Theupper gurecorrespondstomodelA,theloweronetomodelB.
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