Hard exclusive pion electroproduction at backward angles with CLAS

Park, K. et al. (2018) Hard exclusive pion electroproduction at backward angles with CLAS. Physics Letters B, 780, pp. 340-345. (doi:10.1016/j.physletb.2018.03.026)

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Abstract

We report on the first measurement of cross sections for exclusive deeply virtual pion electroproduction off the proton, ep → e' nπ+, above the resonance region at backward pion center-of-mass angles. The ϕ∗ π -dependent cross sections were measured, from which we extracted three combinations of structure functions of the proton. Our results are compatible with calculations based on nucleon-to-pion transition distribution amplitudes (TDAs). These non-perturbative objects are defined as matrix elements of threequark-light-cone-operators and characterize partonic correlations with a particular emphasis on baryon charge distribution inside a nucleon.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Sokhan, Dr Daria and McKinnon, Dr Bryan and Ireland, Professor David and Clark, Ms Louise and Livingston, Dr Kenneth and MacGregor, Professor I and Montgomery, Dr Rachel and Protopopescu, Dr Dan
Authors: Park, K., Guidal, M., Gothe, R.W., Pire, B., Semenov-Tian-Shansky, K., Laget, J.-M., Adhikari, K.P., Adhikari, S., Akbar, Z., Avakian, H., Ball, J., Balossino, I., Baltzell, N.A., Barion, L., Battaglieri, M., Bedlinskiy, I., Biselli, A.S., Briscoe, W.J., Brooks, W.K., Burkert, V.D., Cao, F.T., Carman, D.S., Celentano, A., Charles, G., Chetry, T., Ciullo, G., Clark, L., Cole, P.L., Contalbrigo, M., Crede, V., D'Angelo, A., Dashyan, N., De Vita, R., De Sanctis, E., Defurne, M., Deur, A., Djalali, C., Dupre, R., Egiyan, H., El Alaoui, A., El Fassi, L., Elouadrhiri, L., Eugenio, P., Fedotov, G., Fersch, R., Filippi, A., Garçon, M., Ghandilyan, Y., Gilfoyle, G.P., Girod, F.X., Golovatch, E., Griffioen, K.A., Guo, L., Hafidi, K., Hakobyan, H., Hanretty, C., Harrison, N., Hattawy, M., Heddle, D., Hicks, K., Holtrop, M., Hyde, C.E., Ilieva, Y., Ireland, D.G., Ishkhanov, B.S., Isupov, E.L., Jenkins, D., Johnston, S., Joo, K., Kabir, M.L., Keller, D., Khachatryan, G., Khachatryan, M., Khandaker, M., Kim, W., Klein, F.J., Kubarovsky, V., Kuhn, S.E., Lanza, L., Livingston, K., MacGregor, I.J.D., Markov, N., McKinnon, B., Mirazita, M., Mokeev, V., Montgomery, R.A., Munoz Camacho, C., Nadel-Turonski, P., Niccolai, S., Niculescu, G., Osipenko, M., Paolone, M., Paremuzyan, R., Pasyuk, E., Phelps, W., Pogorelko, O., Poudel, J., Price, J.W., Prok, Y., Protopopescu, D., Ripani, M., Rizzo, A., Rossi, P., Sabatié, F., Salgado, C., Schumacher, R.A., Sharabian, Y., Skorodumina, I., Smith, G.D., Sokhan, D., Sparveris, N., Stepanyan, S., Strakovsky, I.I., Strauch, S., Taiuti, M., Tan, J.A., Ungaro, M., Voskanyan, H., Voutier, E., Wei, X., Zachariou, N., and Zhang, J.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physics Letters B
Publisher:Elsevier
ISSN:0370-2693
ISSN (Online):1873-2445
Published Online:13 March 2018
Copyright Holders:Copyright © 2018 Elsevier B.V.
First Published:First published in Physics Letters B 780: 340-345
Publisher Policy:Reproduced under a Creative Commons License

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