Ratios Of N-15/C-12 And He-4/C-12 Inclusive Electroproduction Cross Sections In The Nucleon Resonance Region

P. E. Bosted,R. Fersch,G. Adams, M. Amarian, S. Anefalos, M. Anghinolfi,G. Asryan,H. Avakian, H. Bagdasaryan,N. Baillie,J. P. Ball, N. A. Baltzell,S. Barrow,V. Batourine,M. Battaglieri,K. Beard,I. Bedlinskiy,M. Bektasoglu,M. Bellis, N. Benmouna,A. S. Biselli, B. E. Bonner,S. Bouchigny,S. Boiarinov,R. Bradford,D. Branford,W. K. Brooks, S. B. R. Ultmann,V. D. Burkert,C. Butuceanu, J. R. Calarco, S. L. Careccia, D. S. Carman, B. Carnahan,A. Cazes,S. Chen,P. L. Cole,P. Collins, P. Coltharp, D. Cords, P. Corvisiero, D. Crabb, H. Crannell,V. Crede,J. P. Cummings,R. De Masi,R. De Vita,E. De Sanctis,P. V. Degtyarenko,H. Denizli,L. Dennis,A. Deur,C. Djalali,G. E. Dodge,J. Donnelly,D. Doughty, P. Dragovitsch, M. Dugger,K. V. Dharmawardane,S. Dytman, O. P. Dzyubak,H. Egiyan, K. S. Egiyan, L. Elouadrhiri,P. Eugenio,R. Fatemi, G. Fedotov,R. J. Feuerbach,T. A. Forest,A. Fradi, H. Funsten, M. Garcon,G. Gavalian,G. P. Gilfoyle, K. L. Giovanetti,F. X. Girod,J. T. Goetz,E. Golovatch,R. W. Gothe,K. A. Griffioen,M. Guidal, M. Guillo,N. Guler,L. Guo,V. Gyurjyan, C. Hadjidakis,K. Hafidi, R. S. Hakobyan,J. Hardie,D. Heddle, F. W. Hersman,K. Hicks,I. Hleiqawi,M. Holtrop, M. Huertas, C. E. Hyde-Wright,Y. Ilieva,D. G. Ireland,B. S. Ishkhanov, E. L. Isupov,M. M. Ito,D. Jenkins,H. S. Jo,K. Joo,H. G. Juengst,N. Kalantarians,C. Keith,J. D. Kellie, M. Khandaker,K. Y. Kim,K. Kim,W. Kim,A. Klein,F. J. Klein, M. Klusman, M. Kossov,L. H. Kramer,V. Kubarovsky,J. Kuhn,S. E. Kuhn,S. V. Kuleshov, J. Lachniet,J. M. Laget,J. Langheinrich,D. Lawrence,Ji Li,A. C. S. Lima,K. Livingston,H. Lu,K. Lukashin, M. Maccormick,N. Markov,S. Mcaleer,B. Mckinnon,J. W. C. Mcnabb, B. A. Mecking, M. D. Mestayer,C. A. Meyer,T. Mibe,K. Mikhailov, R. Minehart,M. Mirazita, R. Miskimen,V. Mokeev, L. Morand,S. A. Morrow,M. Moteabbed,J. Mueller, G. S. Mutchler,P. Nadel-Turonski, R. Nasseripour,S. Niccolai,G. Niculescu,I. Niculescu, B. B. Niczyporuk, M. R. Niroula, R. A. Niyazov, M. Nozar, G. V. O'Rielly,M. Osipenko,A. I. Ostrovidov, K. Park,E. Pasyuk,C. Paterson, S. A. Philips,J. Pierce, N. Pivnyuk, D. Pocanic,O. Pogorelko,E. Polli,S. Pozdniakov, B. M. Preedom,J. W. Price,Y. Prok,D. Protopopescu, L. M. Qin,B. A. Raue,G. Riccardi,G. Ricco, M. Ripani,G. Rosner,P. Rossi, D. Rowntree,P. D. Rubin,F. Sabatie, C. Salgado, J. P. Santoro,V. Sapunenko,R. A. Schumacher, V. S. Serov, Y. G. Sharabian,J. Shaw, N. V. Shvedunov, A. V. Skabelin,E. S. Smith,L. C. Smith, D. I. Sober, A. Stavinsky,S. S. Stepanyan,S. Stepanyan,B. E. Stokes, P. Stoler,S. Strauch,R. Suleiman, M. Taiuti,S. Taylor, D. J. Tedeschi,U. Thoma, A. Tkabladze,S. Tkachenko, L. Todor,M. Ungaro, M. F. Vineyard, A. V. Vlassov,L. B. Weinstein, D. P. Weygand, M. Williams,E. Wolin,M. H. Wood, A. Yegneswaran,J. Yun,L. Zana,J. Zhang,B. Zhao,Z. Zhao

PHYSICAL REVIEW C(2008)

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摘要
The (W, Q(2)) dependence of the ratio of inclusive electron scattering cross sections for N-15/C-12 was determined in the kinematic ranges 0.8 < W < 2 GeV and 0.2 < Q(2)< 1 GeV2 using 2.285 GeV electrons and the CLAS detector at Jefferson Lab. The ratios exhibit only slight resonance structure, in agreement with a simple phenomenological model and an extrapolation of deep-inelastic scattering ratios to low Q(2). Ratios of He-4/C-12 using 1.6 to 2.5 GeV electrons were measured with very high statistical precision and were used to correct for He in the N and C targets. The (W, Q(2)) dependence of the He-4/C-12 ratios is in good agreement with that of the phenomenological model and exhibit significant resonance structure centered at W = 0.94,1.23, and 1.5 GeV.
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