PRECISE PION ELECTROPRODUCTION IN THE P(E,E'PI(+))N REACTION AT W=1125 MEV

Authors
BLOMQVIST KI BOEGLIN WU BOHM R DISTLER M DRECHSEL D EDELHOFF R FRIEDRICH J GEIGES R HANSTEIN O KAHRAU M KORN M KRAMER H KRYGIER KW KUNDE V KUSS M LIESENFELD A MERLE K NEUHAUSEN R OFFERMANN EAJM POSPISCHIL T POTOKAR M ROKAVEC A RICHTER AW ROSNER G SAUER P SCHARDT S SCHMIEDEN H SIRCA S TIATOR L VODENIK B WAGNER A WALCHER T WOLF S
Citation
Ki. Blomqvist et al., PRECISE PION ELECTROPRODUCTION IN THE P(E,E'PI(+))N REACTION AT W=1125 MEV, ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 353(4), 1996, pp. 415-421
Citations number
18
Categorie Soggetti
Physics, Nuclear","Physics, Particles & Fields
Journal title
ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI → ACNP
ISSN journal
09397922
Volume
353
Issue
4
Year of publication
1996
Pages
415 - 421
Database
ISI
SICI code
0939-7922(1996)353:4<415:PPEITP>2.0.ZU;2-E
Abstract
The reaction e+p --> e+pi(+)+n, at c.m. energy W = 1125MeV and momentu m transfer Q(2) = 0.117GeV(2)/c(2) has been measured. The transverse a nd longitudinal structure functions have been separated by varying the polarization of the virtual photon (Rosenbluth plot) with a 3 to 4% e rror. In addition the longitudinal-transverse interference term has be en determined measuring the right-left asymmetry with an accuracy of 3 %. The experimental data are compared to model calculations, and the s ensitivity of the results to the axial and pion formfactors is discuss ed.