Ep→epπ0reaction studied in theΔ(1232)mass region using polarization asymmetries

A Biselli,D P Weygand,V Sapunenko,Y G Sharabian,A Yegneswaran,M Nozar,M Bektasoglu,P Corvisiero,D I Sober,R A Schumacher,P V Degtyarenko,Y Patois,D Heddle,E Wolin,M J Amaryan,L Todor,K Loukachine,F W Hersman,C Tur,M S Ohandjanyan,G Gavalian,E De Sanctis,T A Forest,S Boiarinov,M Anghinolfi,M Guidal,J H Kelley,L Farhi,U Thoma,R Fatemi,K L Giovanetti,J Mccarthy,M Kossov,I I Strakovsky,M Osipenko,G S Mutchler,D Branford,B M Preedom,D Rowntree,J Napolitano,R Bradford,C Cetina,H Egiyan,D Cords,M Battaglieri,G E Dodge,L Ciciani,D S Carman,E Golovatch,N Pivnyuk,M Klusman,M Ungaro,S Stepanyan,V S Serov,M Ripani,K Sabourov,D Doughty,P Dragovitsch,S Bueltmann,C Djalali,V Gyurjyan,B Carnahan,H Denizli,M Khandaker,M Guillo,P L Cole,J Hardie,R A Niyazov,J J Manak,S E Kuhn,O Pogorelko,G S Adams,J M Laget,S Whisnant,J R Calarco,E Anciant,M Mirazita,L Sorrell,R J Feuerbach,J Lachniet,S Barrow,R W Major,K V Dharmawardane,K Hicks,M D Mestayer,K Beard,K A Griffioen,K S Egiyan,W Kim,S Simionatto,G Ricco,G Audit,S J Gaff,M Taiuti,S Mcaleer,H Avakian,R De Vita,G Niculescu,G Asryan,M Eckhause,E Polli,P Stoler,M Holtrop,B E Bonner,P Eugenio,R Thompson,G A Peterson,J Shaw,J W C Mcnabb,D Crabb,H Crannell,S Dytman,M M Ito,K Y Kim,T Y Tung,R Minehart,J Zhao,M Dugger,D Hanock,B A Raue,S Taylor,C A Meyer,G V O’Rielly,K Joo,L M Qin,F J Klein,K S Dhuga,G P Gilfoyle,D Počanić ,R E Welsh ,Volker Burkert ,J Kühn ,H.r Weller ,D J Tedeschi ,L Dennis ,J P Cummings ,J Muêller ,R Demirchyan ,S A Philips ,Barry Ritchie ,C Salgado ,Claude Marchand ,C E Hyde‐Wright ,Kevin Fissum ,S E Rock ,J F Hu ,S Shuvalov ,Alan Coleman ,Jaeseok Yun ,Y Efremenko ,A V Vlassov ,G.a Leksin ,B B Niczyporuk ,V Gavrilov ,A V Skabelin ,H O Funsten ,V V Frolov ,Pascal Girard ,K Kim,L B Weinstein,S Bouchigny,S K Matthews,S Gilad,T Auger,A V Klimenko,F Ronchetti,N Bianchi,A Klein,J T O’Brien,J Domingo,A Longhi,L Y Murphy,K Park,R S Hicks,D Lawrence,M F Vineyard,W Bertozzi,A Freyberger,B Asavapibhop,S O Nelson,E S Smith,B Zhang,L H Kramer,M Gai,W K Brooks,P D Rubin,J W Price,M Witkowski,L Guo,T Smith,P Bosted,M Spraker,V Muccifora,P Rossi,K Wang,V Mokeev,J Connelly,A Empl,G Riccardi,M Sargsyan,J Ficenec,B A Mecking,Y Kuang,L Elouadrhiri,D Jenkins,L C Smith,R Miskimen,Zhengfang Zhou

doi:10.1103/physrevc.68.035202

Ep→epπ0reaction studied in theΔ(1232)mass region using polarization asymmetries

A Biselli, D P Weygand + Show 206 more

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https://doi.org/10.1103/physrevc.68.035202

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Journal: Physical review. C	Publication Date: Sep 11, 2003
Citations: 21

#Unitary Isobar Model #Effective Lagrangian Theory + Show 8 more

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Abstract

Measurements of the angular distributions of target and double spin asymmetries for the Delta(1232) in the exclusive channel (polarized-p polarized-e,e-prime p)pi0 obtained at Jefferson Lab in the Q2 range from 0.5 to 1.5 gev2 are presented. Results of the asymmetries are compared with the unitary isobar model, dynamical models, and the effective Lagrangian theory. Sensitivity to the different models was observed, particularly in relation to the description of background terms on which the target asymmetry depends significantly.

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