A Direct Measurement of Hard Two-Photon Exchange with Electrons and Positrons at CLAS12

Autor: Schmidt, A., Briscoe, W. J., Cortes, O., Earnest, L., Grauvogel, G. N., Ratliff, S., Seroka, E. M., Sharp, P., Strakovsky, I. I., Niculescu, G., Diehl, S., Blunden, P. G., Cline, E., Korover, I., Kutz, T., Santiesteban, S. N., Fogler, C., Weinstein, L. B., Marchand, D., Niccolai, S., Voutier, E., D'Angelo, A., Bernauer, J. C., Singh, R., Burkert, V., Hauenstein, F., Higinbotham, D. W., Nguyen, D., Pasyuk, E., Szumila-Vance, H., Wei, X., Keller, D.

One of the most surprising discoveries made at Jefferson Lab has been the discrepancy in the determinations of the proton's form factor ratio $\mu_p G_E^p/G_M^p$ between unpolarized cross section measurements and the polarization transfer technique.

Externí odkaz: http://arxiv.org/abs/2308.08777

Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab

Autor: Accardi, A., Achenbach, P., Adhikari, D., Afanasev, A., Akondi, C. S., Akopov, N., Albaladejo, M., Albataineh, H., Albrecht, M., Almeida-Zamora, B., Amaryan, M., Androić, D., Armstrong, W., Armstrong, D. S., Arratia, M., Arrington, J., Asaturyan, A., Austregesilo, A., Avagyan, H., Averett, T., Gayoso, C. Ayerbe, Bacchetta, A., Balantekin, A. B., Baltzell, N., Barion, L., Barry, P. C., Bashir, A., Battaglieri, M., Bellini, V., Belov, I., Benhar, O., Benkel, B., Benmokhtar, F, Bentz, W., Bertone, V., Bhatt, H., Bianconi, A., Bibrzycki, L., Bijker, R., Binosi, D., Biswas, D., Boër, M., Boeglin, W., Bogacz, S. A., Boglione, M., Bondí, M., Boos, E. E., Bosted, P., Bozzi, G., Brash, E. J., Briceño, R. A., Brindza, P. D., Briscoe, W. J., Brodsky, S. J, Brooks, W. K., Burkert, V. D., Camsonne, A., Cao, T., Cardman, L. S., Carman, D. S., Carpinelli, M, Cates, G. D., Caylor, J., Celentano, A., Celiberto, F. G., Cerutti, M., Chang, Lei, Chatagnon, P., Chen, C., Chen, J-P, Chetry, T., Christopher, A., Christy, E., Chudakov, E., Cisbani, E., Cloët, I. C., Cobos-Martinez, J. J., Cohen, E. O., Colangelo, P., Cole, P. L., Constantinou, M., Contalbrigo, M., Costantini, G., Cosyn, W., Cotton, C., Courtoy, A., Dusa, S. Covrig, Crede, V., Cui, Z. -F., D'Angelo, A., Döring, M., Dalton, M. M., Danilkin, I., Davydov, M., Day, D., De Fazio, F., De Napoli, M., De Vita, R., Dean, D. J., Defurne, M., Deur, A., Devkota, B., Dhital, S., Di Nezza, P., Diefenthaler, M., Diehl, S., Dilks, C., Ding, M., Djalali, C., Dobbs, S., Dupré, R., Dutta, D., Edwards, R. G., Egiyan, H., Ehinger, L., Eichmann, G., Elaasar, M., Elouadrhiri, L., Alaoui, A. El, Fassi, L. El, Emmert, A., Engelhardt, M., Ent, R., Ernst, D. J, Eugenio, P., Evans, G., Fanelli, C., Fegan, S., Fernández-Ramírez, C., Fernandez, L. A., Fernando, I. P., Filippi, A., Fischer, C. S., Fogler, C., Fomin, N., Frankfurt, L., Frederico, T., Freese, A., Fu, Y., Gamberg, L., Gan, L., Gao, F., Garcia-Tecocoatzi, H., Gaskell, D., Gasparian, A., Gates, K, Gavalian, G., Ghoshal, P. K., Giachino, A., Giacosa, F., Giannuzzi, F., Gilfoyle, G. -P., Girod, F-X, Glazier, D. I., Gleason, C., Godfrey, S., Goity, J. L., Golubenko, A. A., Gonzàlez-Solís, S., Gothe, R. W., Gotra, Y., Griffioen, K., Grocholski, O., Grube, B., Guèye, P., Guo, F. -K., Guo, Y., Guo, L., Hague, T. J., Hammoud, N., Hansen, J. -O., Hattawy, M., Hauenstein, F., Hayward, T., Heddle, D., Heinrich, N., Hen, O., Higinbotham, D. W., Higuera-Angulo, I. M., Blin, A. N. Hiller, Hobart, A., Hobbs, T., Holmberg, D. E, Horn, T., Hoyer, P., Huber, G. M., Hurck, P., Hutauruk, P. T. P., Ilieva, Y., Illari, I., Ireland, D. G, Isupov, E. L., Italiano, A., Jaegle, I., Jarvis, N. S., Jenkins, DJ, Jeschonnek, S., Ji, C-R., Jo, H. S., Jones, M., Jones, R. T., Jones, D. C., Joo, K., Junaid, M., Kageya, T., Kalantarians, N., Karki, A., Karyan, G., Katramatou, A. T., Kay, S. J. D, Kazimi, R., Keith, C. D., Keppel, C., Kerbizi, A., Khachatryan, V., Khanal, A., Khandaker, M., Kim, A., Kinney, E. R., Kohl, M., Kotzinian, A., Kriesten, B. T., Kubarovsky, V., Kubis, B., Kuhn, S. E., Kumar, V., Kutz, T., Leali, M., Lebed, R. F., Lenisa, P., Leskovec, L., Li, S., Li, X., Liao, J., Lin, H. -W., Liu, L., Liuti, S., Liyanage, N., Lu, Y., MacGregor, I. J. D., Mack, D. J., Maiani, L, Mamo, K. A., Mandaglio, G., Mariani, C., Markowitz, P., Marukyan, H., Mascagna, V., Mathieu, V., Maxwell, J., Mazouz, M., McCaughan, M., McKeown, R. D., McKinnon, B., Meekins, D., Melnitchouk, W., Metz, A., Meyer, C. A., Meziani, Z. -E., Mezrag, C., Michaels, R., Miller, G. A., Mineeva, T., Miramontes, A. S., Mirazita, M., Mizutani, K., Mkrtchyan, H., Mkrtchyan, A., Moffit, B., Mohanmurthy, P., Mokeev, V. I., Monaghan, P., Montaña, G., Montgomery, R., Moretti, A., Chàvez, J. M. Morgado, Mosel, U., Movsisyan, A., Musico, P., Nadeeshani, S. A, Nadolsky, P. M., Nakamura, S. X., Nazeer, J., Nefediev, A. V., Neupane, K., Nguyen, D., Niccolai, S., Niculescu, I., Niculescu, G., Nocera, E. R., Nycz, M., Olness, F. I., Ortega, P. G., Osipenko, M., Pace, E., Pandey, B, Pandey, P., Papandreou, Z., Papavassiliou, J., Pappalardo, L. L., Paredes-Torres, G., Paremuzyan, R., Park, S., Parsamyan, B., Paschke, K. D., Pasquini, B., Passemar, E., Pasyuk, E., Patel, T., Paudel, C., Paul, S. J., Peng, J-C., Pentchev, L., Perrino, R., Perry, R. J., Peters, K., Petratos, G. G., Phelps, W., Piasetzky, E., Pilloni, A., Pire, B., Pitonyak, D., Pitt, M. L., Polosa, A. D., Pospelov, M., Postuma, A. C., Poudel, J., Preet, L., Prelovsek, S., Price, J. W., Prokudin, A., Puckett, A. J. R., Pybus, J. R., Qin, S. -X., Qiu, J. -W., Radici, M., Rashidi, H., Rathnayake, A. D, Raue, B. A., Reed, T., Reimer, P. E., Reinhold, J., Richard, J. -M., Rinaldi, M., Ringer, F., Ripani, M., Ritman, J., West, J. Rittenhouse, Rivero-Acosta, A., Roberts, C. D., Rodas, A., Rodini, S., Rodríguez-Quintero, J., Rogers, T. C., Rojo, J., Rossi, P., Rossi, G. C., Salmè, G., Santiesteban, S. N., Santopinto, E., Sargsian, M., Sato, N., Schadmand, S., Schmidt, A., Schmidt, S. M, Schnell, G., Schumacher, R. A., Schweitzer, P., Scimemi, I., Scott, K. C, Seay, D. A, Segovia, J., Semenov-Tian-Shansky, K., Seryi, A., Sharda, A. S, Shepherd, M. R., Shirokov, E. V., Shrestha, S., Shrestha, U., Shvedunov, V. I., Signori, A., Slifer, K. J., Smith, W. A., Somov, A., Souder, P., Sparveris, N., Spizzo, F., Spreafico, M., Stepanyan, S., Stevens, J. R., Strakovsky, I. I., Strauch, S., Strikman, M., Su, S., Sumner, B. C. L., Sun, E., Suresh, M., Sutera, C., Swanson, E. S., Szczepaniak, A. P, Sznajder, P., Szumila-Vance, H., Szymanowski, L., Tadepalli, A. -S., Tadevosyan, V., Tamang, B., Tarasov, V. V., Thiel, A., Tong, X. -B., Tyson, R., Ungaro, M., Urciuoli, G. M., Usman, A., Valcarce, A., Vallarino, S., Vaquera-Araujo, C. A., Venturelli, L., Vera, F., Vladimirov, A., Vossen, A., Wagner, J., Wei, X., Weinstein, L. B., Weiss, C., Williams, R., Winney, D., Wojtsekhowski, B., Wood, M. H., Xiao, T., Xu, S. -S., Ye, Z., Yero, C., Yuan, C. -P., Yurov, M., Zachariou, N., Zhang, Z., Zhao, Z. W., Zhao, Y., Zheng, X., Zhou, X., Ziegler, V., Zihlmann, B., de Paula, W, de Téramond, G. F.

This document presents the initial scientific case for upgrading the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab (JLab) to 22 GeV. It is the result of a community effort, incorporating insights from a series of workshops co

Externí odkaz: http://arxiv.org/abs/2306.09360

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Measurement of the helicity asymmetry $\mathbb{E}$ for the $\vec{\gamma}\vec{p} \to p \pi^0$ reaction in the resonance region

Autor: Kim, C.W, Zachariou, N, Bashkanov, M, Briscoe, W.J, Fegan, S, Kashevarov, V.L, Nikonov, K, Sarantsev, A, Schmidt, A, Strakovsky, I.I, Watts, D.P, Workman, R.L, Achenbach, P, Akbar, Z, Amaryan, M.J, Angelini, G, Armstrong, W.R, Atac, H, Baashen, L, Baltzell, N.A, Barion, L, Battaglieri, M, Bedlinskiy, I, Benkel, B, Benmokhtar, F, Benmouna, N, Bianconi, A, Biselli, A.S, Booth, W.A, Bossù, F, Boiarinov, S, Brinkmann, K.T, Brock, J, Bulumulla, D, Burkert, V.D, Cao, T, Carlin, C, Carman, D.S, Carvajal, J.C, Chatagnon, P, Chesnokov, V, Chetry, T, Ciullo, G, Clash, G, Cole, P.L, Contalbrigo, M, Becerra, O. Cortes, Costantini, G, Crede, V, d'Angelo, A, Dashyan, N, de Vita, R, Defurne, M, Deur, A, Diehl, S, Djalali, C, Dugger, M, Dupre, R, Egiyan, H, Alaoui, A. El, Fassi, L. El, Elouadrhiri, L, Eugenio, P, Filippi, A, Fogler, C, Gavalian, G, Gilfoyle, G.P, Golubenko, A.A, Gosta, G, Gothe, R.W, Griffioen, K.A, Hafidi, K, Hakobyan, H, Hattawy, M, Hauenstein, F, Hayward, T.B, Heddle, D, Hobart, A, Holtrop, M, Ilieva, Y, Illari, I, Ireland, D.G, Isupov, E.L, Iwamoto, H, Jenkins, D, Jo, H.S, Johnston, R, Joo, K, Joosten, S, Kageya, T, Keith, C.D, Keller, D, Khanal, A, Kim, A, Kim, W, Klein, F.J, Klimenko, V, Kripko, A, Kubarovsky, V, Lanza, L, Leali, M, Lee, S, Li, X, Livingston, K, Macgregor, I.J.D, Marchand, D, Mascagna, V, Mckinnon, B, Migliorati, S, Milner, R.G, Mineeva, T, Mokeev, V, Munoz Camacho, C, Nadel-Turonski, P, Neupane, K, Niccolai, S, Osipenko, M, Ostrovidov, A.I, Pandey, P, Paolone, M, Pappalardo, L.L, Paremuzyan, R, Pasyuk, E, Paul, S.J, Pilleux, N, Pokhrel, M, Poudel, J, Price, J.W, Prok, Y, Radic, A, Ramasubramanian, N, Ratliff, S, Reed, T, Richards, J, Ripani, M, Ritchie, B.G, Ritman, J, Rosner, G, Salgado, C, Schadmand, S, Schott, D, Schumacher, R.A, Scott, M.B.C, Seely, M.L, Seroka, E.M, Shirokov, E.V, Shrestha, U, Sokhan, D, Sparveris, N, Spreafico, M, Strauch, S, Tan, J, Tyson, R, Ungaro, M, Vallarino, S, Venturelli, L, Voskanyan, H, Voutier, E, Wei, X, Williams, R, Wishart, R, Wood, M.H, Yurov, M, Zhang, J, Zurek, M

The double-spin-polarization observable $\mathbb{E}$ for $\vec{\gamma}\vec{p}\to p\pi^0$ has been measured with the CEBAF Large Acceptance Spectrometer (CLAS) at photon beam energies $E_\gamma$ from 0.367 to $2.173~\mathrm{GeV}$ (corresponding to cen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=arXiv_dedup_::d47de7e1ddf3cc1e0d9d575ee8d2ec4a
https://hal.science/hal-04110295