π0photoproduction on the proton for photon energies from 0.675 to 2.875 GeV

M Dugger,A I Ostrovidov,W J Briscoe,S A Morrow,N Benmouna,Y Ilieva,M Osipenko,A S Biselli,P Ambrozewicz,P L Cole,D G Ireland,J D Kellie,M Amarian,A V Skabelin,V S Serov,N Baillie,N Kalantarians,S Strauch,J Langheinrich,K L Giovanetti,P Dragovitsch,P Collins,R A Niyazov,S Pozdniakov,G Ricco,J Slamanca,B Mckinnon,S L Careccia,K Beard,G Gavalian,M Taiuti,B L Berman,J Lachniet,M D Mestayer,M Mirazita,L Todor,B M Preedom,F X Girod,D Protopopescu,R W Gothe,P Corvisiero,D Cords,I Hleiqawi,R J Feuerbach,S E Kuhn,M Ungaro,B S Ishkhanov,N Guler,N Pivnyuk,I I Strakovsky,E Pasyuk,K V Dharmawardane,K Moriya,I Bedlinskiy,Z Krahn,J Hardie,R De Vita,S Barrow,A Tkabladze,J Napolitano,M Nozar,G Niculescu,K Hicks,B B Niczyporuk,H Avakian,E Anciant,V Sapunenko,P Eugenio,D Doughty,H Bagdasaryan,P Stoler,Y Prok,S Simionatto,K Mikhailov,S Tkachenko,D Heddle,H G Juengst,M Bellis,P V Degtyarenko,S Bültmann,B Carnahan,M Ripani,D I Sober,B E Bonner,K Livingston,M Garçon,H S Jo,J M Laget,D S Carman,S A Philips,J R Calarco,N A Baltzell,G E Dodge,J J Manak,F Sabatié,L C Maximon,K A Griffioen,C Tur,O Pogorelko,M Battaglieri,G S Mutchler,D Branford,M Bektasoglu,M Guillo,R Fatemi,I Niculescu,A Yegneswaran,M Holtrop,S Mcaleer,H Egiyan,E De Sanctis,R Bradford,F W Hersman,C Djalali,W Kim,A Shafi,M Anghinolfi,O P Dzyubak,Y G Sharabian,K Lukashin,T A Forest,H Denizli,M Kossov,M Klusman,G Asryan,M Guidal,J P Santoro,S Stepanyan,G Rosner,D Rowntree,E Wolin,P Coltharp,A Deur,R A Schumacher,D J Tedeschi,M Khandaker,K S Egiyan,G Audit,C Paterson,S Niccolai,C Butuceanu,V Gyurjyan,S Boiarinov,J Ficenec,K Wang,S Bouchigny,N Bianchi,R Minehart,M H Wood,S A Dytman ,G S Adams ,V Muccifora,J Donnelly,C E Hyde‐Wright ,J Pierce,M Spraker,B A Mecking,B E Stokes,R Hakobyan ,M Williams,R Miskimen,L Elouadrhiri,P Rossi,J Muêller ,H O Funsten ,W K Brooks,A C S Lima ,P D Rubin,F Ronchetti,R Dickson,Alan Coleman ,S Taylor,G Fedotov,A V Vlassov,J T Goetz,K Kim,G Riccardi,T Lee,K S Dhuga,K Joo,A Empl,V Kuznetsov,L Dennis,P Nadel-Turoński ,J W Mcnabb ,R L Workman,K Park,L M Qin,D P Weygand,L Guo,L Kramer ,V Kubarovsky,M F Vineyard,C A Meyer,G V O’rielly ,V Mokeev,J W Price,E S Smith,J F Hu ,J Ball ,F J Klein,V D Burkert,T Mibe,L C Smith,D Lawrence,J Shaw,Barry Ritchie ,C Hadjidakis,D Crabb,D Počanić ,H Crannell,L B Weinstein,M M Ito,Jaeseok Yun ,G Feldman,H.r Weller ,M Huertas,Claude Marchand ,B A Raue,J Kühn ,B Asavapibhop,L Zana,A V Klimenko,S Chen,A Stavinsky,J P Cummings,C Salgado,R Thompson,D Jenkins,J Zhang,Richard A Arndt ,A Klein,M R Niroula ,G P Gilfoyle,K Y Kim,R Nasseripour

doi:10.1103/physrevc.76.025211

π0photoproduction on the proton for photon energies from 0.675 to 2.875 GeV

M Dugger, A I Ostrovidov + Show 234 more

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https://doi.org/10.1103/physrevc.76.025211

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Journal: Physical review. C	Publication Date: Aug 24, 2007
Citations: 81

#CEBAF Large Acceptance Spectrometer #Tagged Photon Beam + Show 8 more

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Abstract

Differential cross sections for the reaction $\gamma p \to p \pi^0$ have been measured with the CEBAF Large Acceptance Spectrometer (CLAS) and a tagged photon beam with energies from 0.675 to 2.875 GeV. The results reported here possess greater accuracy in the absolute normalization than previous measurements. They disagree with recent CB-ELSA measurements for the process at forward scattering angles. Agreement with the SAID and MAID fits is found below 1 GeV. The present set of cross sections has been incorporated into the SAID database, and exploratory fits have been extended to 3 GeV. Resonance couplings have been extracted and compared to previous determinations.

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