An experimental program with high duty-cycle polarized and unpolarized positron beams at Jefferson Lab
A. Accardi, A. Afanasev, I. Albayrak, S. F. Ali, M. Amaryan, J. R. M. Annand, J. Arrington, A. Asaturyan, H. Atac, H. Avakian, T. Averett, C. Ayerbe Gayoso, X. … 展开作者
A. Accardi, A. Afanasev, I. Albayrak, S. F. Ali, M. Amaryan, J. R. M. Annand, J. Arrington, A. Asaturyan, H. Atac, H. Avakian, T. Averett, C. Ayerbe Gayoso, X. Bai, L. Barion, M. Battaglieri, V. Bellini, R. Beminiwattha, F. Benmokhtar, V. V. Berdnikov, J. C. Bernauer, V. Bertone, A. Bianconi, A. Biselli, P. Bisio, P. Blunden, M. Boer, M. Bondì, K. -T. Brinkmann, W. J. Briscoe, V. Burkert, T. Cao, A. Camsonne, R. Capobianco, L. Cardman, M. Carmignotto, M. Caudron, L. Causse, A. Celentano, P. Chatagnon, J. -P. Chen, T. Chetry, G. Ciullo, E. Cline, P. L. Cole, M. Contalbrigo, G. Costantini, A. D'Angelo, L. Darmé, D. Day, M. Defurne, M. De Napoli, A. Deur, R. De Vita, N. D'Hose, S. Diehl, M. Diefenthaler, B. Dongwi, R. Dupré, H. Dutrieux, D. Dutta, M. Ehrhart, L. El Fassi, L. Elouadrhiri, R. Ent, J. Erler, I. P. Fernando, A. Filippi, D. Flay, T. Forest, E. Fuchey, S. Fucini, Y. Furletova, H. Gao, D. Gaskell, A. Gasparian, T. Gautam, F. -X. Girod, K. Gnanvo, J. Grames, G. N. Grauvoge, P. Gueye, M. Guidal, S. Habet, T. J. Hague, D. J. Hamilton, O. Hansen, D. Hasell, M. Hattawy, D. W. Higinbotham, A. Hobart, T. Horn, C. E. Hyde, H. Ibrahim, A. Ilyichev, A. Italiano, K. Joo, S. J. Joosten, V. Khachatryan, N. Kalantarians, G. Kalicy, B. Karky, D. Keller, C. Keppel, M. Kerver, M. Khandaker, A. Kim, J. Kim, P. M. King, E. Kinney, V. Klimenko, H. -S. Ko, M. Kohl, V. Kozhuharov, B. T. Kriesten, G. Krnjaic, V. Kubarovsky, T. Kutz, L. Lanza, M. Leali, P. Lenisa, N. Liyanage, Q. Liu, S. Liuti, J. Mammei, S. Mantry, D. Marchand, P. Markowitz, L. Marsicano, V. Mascagna, M. Mazouz, M. McCaughan, B. McKinnon, D. McNulty, W. Melnitchouk, A. Metz, Z. -E. Meziani, S. Migliorati, M. Mihovilovic, R. Milner, A. Mkrtchyan, H. Mkrtchyan, A. Movsisyan, H. Moutarde, M. Muhoza, C. Muñoz Camacho, J. Murphy, P. Nadel-Turonski, E. Nardi, J. Nazeer, S. Niccolai, G. Niculescu, R. Novotny, J. F. Owens, M. Paolone, L. Pappalardo, R. Paremuzyan, B. Pasquini, E. Pasyuk, T. Patel, I. Pegg, C. Peng, D. Perera, M. Poelker, K. Price, A. J. R. Puckett, M. Raggi, N. Randazzo, M. N. H. Rashad, M. Rathnayake, B. Raue, P. E. Reimer, M. Rinaldi, A. Rizzo, Y. Roblin, J. Roche, O. Rondon-Aramayo, F. Sabatié, G. Salmè, E. Santopinto, R. Santos Estrada, B. Sawatzky, A. Schmidt, P. Schweitzer, S. Scopetta, V. Sergeyeva, M. Shabestari, A. Shahinyan, Y. Sharabian, S. Širca, E. S. Smith, D. Sokhan, A. Somov, N. Sparveris, M. Spata, H. Spiesberger, M. Spreafico, S. Stepanyan, P. Stoler, I. Strakovsky, R. Suleiman, M. Suresh, P. Sznajder, H. Szumila-Vance, V. Tadevosyan, A. S. Tadepalli, A. W. Thomas, M. Tiefenback, R. Trotta, M. Ungaro, P. Valente, M. Vanderhaeghen, L. Venturelli, H. Voskanyan, E. Voutier, B. Wojtsekhowski, M. H. Wood, S. Wood, J. Xie, W. Xiong, Z. Ye, M. Yurov, H. -G. Zaunick, S. Zhamkochyan, J. Zhang, S. Zhang, S. Zhao, Z. W. Zhao, X. Zheng, J. Zhou, C. Zorn
备注：
18 pages, 7 figures This version superseeds the previous version which scientific content was decomposed into several more elaborated articles. All of these articles will be collected in the EPJ A Topical Issue about "Positron beam and physics at Jefferson Lab (e+@Jlab)"
Positron beams, both polarized and unpolarized, are identified as essential ingredients for the experimental programs at the next generation of lepton accelerators. In the context of the hadronic physics program at Jefferson Lab (JLab), positron beams are complementary, even essential, tools for a precise understanding of the electromagnetic structure of nucleons and nuclei, in both the elastic and deep-inelastic regimes. For instance, elastic scattering of polarized and unpolarized electrons and positrons from the nucleon enables a model independent determination of its electromagnetic form factors. Also, the deeply-virtual scattering of polarized and unpolarized electrons and positrons allows unambiguous separation of the different contributions to the cross section of the lepto-production of photons and of lepton-pairs, enabling an accurate determination of the nucleons and nuclei generalized parton distributions, and providing an access to the gravitational form factors. Furthermore, positron beams offer the possibility of alternative tests of the Standard Model of particle physics through the search of a dark photon, the precise measurement of electroweak couplings, and the investigation of charged lepton flavor violation. This document discusses the perspectives of an experimental program with high duty-cycle positron beams at JLab.
Lowest-order QED radiative corrections in unpolarized elastic electron-deuteron scattering beyond the ultra-relativistic limit for the proposed deuteron charge radius measurement at Jefferson Laboratory
First measurement of polarized spin-density matrix elements and differential cross sections d$σ$/d$t$ in $ω$~photoproduction off the proton for $2.7 < E_γ< 5.2$ GeV using CLAS at Jefferson Lab
Argonne National Laboratory（阿贡国家实验室）；California State University, Dominguez Hills（加州州立大学多明格斯山分校）；Canisius College（卡尼休斯学院）；Carnegie Mellon University（卡内基梅隆大学）；Catholic University of America（美国天主教大学）；IRFU, CEA, Université Paris-Saclay（法国原子能和替代能源署法国萨克雷大学IRFU研究所）；Christopher Newport University（克里斯托弗纽波特大学）；University of Connecticut（康涅狄格大学）；Duke University（杜克大学）；Duquesne University（杜肯大学）；Fairfield University（费尔菲尔德大学）；Università di Ferrara（费拉拉大学）；Florida International University（佛罗里达国际大学）；Florida State University（佛罗里达州立大学）；The George Washington University（乔治华盛顿大学）；GSI Helmholtzzentrum für Schwerionenforschung GmbH（德国重离子研究中心）；INFN, Sezione di Ferrara（意大利国家核物理研究院费拉拉分部）；INFN, Laboratori Nazionali di Frascati（意大利国家核物理研究院弗拉斯卡蒂国家实验室）；INFN, Sezione di Genova（意大利国家核物理研究院热那亚分部）；INFN, Sezione di Roma Tor Vergata（意大利国家核物理研究院罗马托维加塔分部）；INFN, Sezione di Torino（意大利国家核物理研究院都灵分部）；INFN, Sezione di Catania（意大利国家核物理研究院卡塔尼亚分部）；INFN, Sezione di Pavia（意大利国家核物理研究院帕维亚分部）；Université Paris-Saclay, CNRS/IN2P3, IJCLab（巴黎萨克雷大学CNRS/IN2P3IJCLab）；James Madison University（詹姆斯麦迪逊大学）；Kyungpook National University（庆北国立大学）
