Observation of large missing-momentum (e,e′p) cross-section scaling and the onset of correlated-pair dominance in nuclei

Korover, I. et al. (2023) Observation of large missing-momentum (e,e′p) cross-section scaling and the onset of correlated-pair dominance in nuclei. Physical Review C, 107(6), L061301. (doi: 10.1103/PhysRevC.107.L061301)

Abstract

We report the measurement of x B scaling in ( e , e ′ p ) cross-section ratios off nuclei relative to deuterium at large missing momentum of 350 ≤ p miss ≤ 600 MeV / c . The observed scaling extends over a kinematic range of 0.7 ≤ x B ≤ 1.8 , which is significantly wider than 1.4 ≤ x B ≤ 1.8 previously observed for inclusive ( e , e ′ ) cross-section ratios. The x B -integrated cross-section ratios become constant (i.e., scale) beginning at p miss ≈ k F , the nuclear Fermi momentum. Comparing with theoretical calculations we find good agreement with generalized contact formalism calculations for high missing momentum ( > 375 MeV / c ), suggesting the observed scaling results from interacting with nucleons in short-range correlated (SRC) pairs. For low missing momenta, mean-field calculations show good agreement with the data for p miss < k F , and suggest a potential non-negligible contribution to the measured cross-section ratios from scattering off single, uncorrelated, nucleons up to p miss ≈ 350 MeV / c . Therefore, SRCs become dominant in nuclei at p miss ≈ 350 MeV / c , well above the nuclear Fermi Surface of k F ≈ 250 MeV / c .

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Wishart, Robert and MacGregor, Professor Ian and McKinnon, Dr Bryan and Tyson, Mr Richard and Clark, Ms Louise and Livingston, Dr Kenneth and Ireland, Professor David and Rosner, Professor Guenther
• Authors: Korover, I., Denniston, A. W., Kiral, A., Schmidt, A., Lovato, A., Rocco, N., Nikolakopoulos, A., Weinstein, L. B., Piasetzky, E., Hen, O., Amaryan, M. J., Angelini, G., Atac, H., Baltzell, N. A., Barion, L., Battaglieri, M., Bedlinskiy, I., Benmokhtar, F., Bianconi, A., Biondo, L., Biselli, A. S., Bossù, F., Boiarinov, S., Briscoe, W. J., Bulumulla, D., Burkert, V. D., Carman, D. S., Carvajal, J. C., Caudron, M., Chatagnon, P., Chetry, T., Ciullo, G., Clark, L., Cole, P. L., Contalbrigo, M., Costantini, G., D'Angelo, A., Dashyan, N., De Vita, R., Defurne, M., Deur, A., Diehl, S., Djalali, C., Duer, M., Dupre, R., Egiyan, H., Ehrhart, M., El Alaoui, A., El Fassi, L., Elouadrhiri, L., Eugenio, P., Fegan, S., Fersch, R., Filippi, A., Gavalian, G., Ghandilyan, Y., Gilfoyle, G. P., Girod, F. X., Golubenko, A. A., Gothe, R. W., Griffioen, K. A., Guidal, M., Guo, L., Hafidi, K., Hakobyan, H., Hattawy, M., Hayward, T. B., Heddle, D., Hicks, K., Hobart, A., Holtrop, M., Hyde, C. E., Ilieva, Y., Ireland, D. G., Isupov, E. L., Jo, H. S., Joo, K., Joosten, S., Keller, D., Khanal, A., Khandaker, M., Kim, A., Kim, W., Kripko, A., Kubarovsky, V., Lanza, L., Leali, M., Lenisa, P., Livingston, K., MacGregor, I. J. D., Marchand, D., Marsicano, L., Mascagna, V., McKinnon, B., Migliorati, S., Mirazita, M., Mokeev, V., Munoz Camacho, C., Nadel-Turonski, P., Neupane, K., Niccolai, S., Niculescu, G., O'Connell, T. R., Osipenko, M., Ostrovidov, A. I., Pandey, P., Paolone, M., Pappalardo, L. L., Paremuzyan, R., Pasyuk, E., Pogorelko, O., Pokhrel, M., Poudel, J., Price, J. W., Prok, Y., Raue, B. A., Reed, T., Ripani, M., Ritman, J., Rizzo, A., Rosner, G., Rossi, P., Rowley, J., Sabatié, F., Schumacher, R. A., Segarra, E. P., Sharabian, Y. G., Shirokov, E. V., Shrestha, U., Soto, O., Sparveris, N., Stepanyan, S., Strakovsky, I. I., Strauch, S., Tyson, R., Ungaro, M., Venturelli, L., Voskanyan, H., Vossen, A., Voutier, E., Wei, K., Wei, X., Wishart, R., Wood, M. H., Yale, B., Zachariou, N., Zhang, J., and Zhao, Z.W.
• Subjects: Q Science > QC Physics
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Research Group: NPE
• Journal Name: Physical Review C
• Publisher: American Physical Society
• ISSN: 2469-9985
• ISSN (Online): 2469-9993
• Published Online: 06 June 2023
• Copyright Holders: Copyright © 2023 American Physical Society
• First Published: First published in Physical Review C 107(6): L061301
• Publisher Policy: Reproduced in accordance with the publisher copyright policy

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