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Center of Mass Motion of Short-Range Correlated Nucleon Pairs studied via the A (e,e'pp) Reaction

  • E. O. Cohen
  • , O. Hen
  • , E. Piasetzky
  • , L. B. Weinstein
  • , M. Duer
  • , A. Schmidt
  • , I. Korover
  • , H. Hakobyan
  • , S. Adhikari
  • , Z. Akbar
  • , M. J. Amaryan
  • , H. Avakian
  • , J. Ball
  • , L. Barion
  • , M. Battaglieri
  • , A. Beck
  • , I. Bedlinskiy
  • , A. S. Biselli
  • , S. Boiarinov
  • , W. Briscoe
  • V. D. Burkert, F. Cao, D. S. Carman, A. Celentano, G. Charles, Pierre Chatagnon, T. Chetry, G. Ciullo, Brandon A. Clary, M. Contalbrigo, V. Crede, R. Cruz Torres, A. D'Angelo, N. Dashyan, R. De Vita, E. De Sanctis, M. Defurne, A. Deur, S. Diehl, C. Djalali, M. Duer, R. Dupre, H. Egiyan, Mathieu Ehrhart, A. El Alaoui, L. El Fassi, P. Eugenio, G. Fedotov, R. Fersch, A. Filippi, Y. Ghandilyan, K. L. Giovanetti, F. X. Girod, E. Golovatch, R. W. Gothe, K. A. Griffioen, K. Hafidi, N. Harrison, F. Hauenstein, D. Heddle, K. Hicks, M. Holtrop, D. G. Ireland, B. S. Ishkhanov, E. L. Isupov, D. Jenkins, H. S. Jo, S. Johnston, M. L. Kabir, D. Keller, G. Khachatryan, M. Khachatryan, M. Khandaker, A. Kim, W. Kim, A. Klein, F. J. Klein, I. Korover, V. Kubarovsky, S. E. Kuhn, L. Lanza, P. Lenisa, K. Livingston, I. J.D. Macgregor, D. Marchand, B. McKinnon, S. Mey-Tal Beck, C. A. Meyer, M. Mirazita, V. Mokeev, R. A. Montgomery, A. Movsisyan, C. Munoz Camacho, B. Mustapha, P. Nadel-Turonski, S. Niccolai, G. Niculescu, M. Osipenko, A. I. Ostrovidov, M. Paolone, R. Paremuzyan, E. Pasyuk, O. Pogorelko, J. W. Price, Y. Prok, D. Protopopescu, M. Ripani, D. Riser, A. Rizzo, G. Rosner, P. Rossi, F. Sabatié, B. A. Schmookler, R. A. Schumacher, Y. G. Sharabian, D. Sokhan, N. Sparveris, S. Stepanyan, S. Strauch, M. Taiuti, J. A. Tan, M. Ungaro, H. Voskanyan, E. Voutier, R. Wang, D. P. Watts, X. Wei, M. H. Wood, N. Zachariou, J. Zhang, X. Zheng, Z. W. Zhao
  • Tel Aviv University
  • Massachusetts Institute of Technology
  • Old Dominion University
  • Universidad Técnica Federico Santa Maria
  • Florida International University
  • Florida State University
  • Thomas Jefferson National Accelerator Facility
  • Université Paris-Saclay
  • National Institute for Nuclear Physics
  • Nuclear Research Center-Negev
  • Alikhanov Institute for Theoretical and Experimental Physics
  • Carnegie Mellon University
  • Fairfield University
  • George Washington University
  • University of Connecticut
  • CNRS/IN2P3
  • Ohio University
  • University of Ferrara
  • University of Rome Tor Vergata
  • A. Alikhanian Yerevan Institute of Physics
  • University of South Carolina
  • Mississippi State University
  • Christopher Newport University
  • College of William and Mary
  • James Madison University
  • Lomonosov Moscow State University
  • Argonne National Laboratory
  • University of New Hampshire
  • University of Glasgow
  • Virginia Polytechnic Institute and State University
  • University of Virginia
  • Norfolk State University
  • Idaho State University
  • Kyungpook National University
  • Catholic University of America
  • Rensselaer Polytechnic Institute
  • Temple University
  • Arizona State University
  • California State University Dominguez Hills
  • University of Edinburgh
  • Canisius College
  • Duke University

Research output: Contribution to journalArticlepeer-review

50 Scopus citations

Abstract

Short-range correlated (SRC) nucleon pairs are a vital part of the nucleus, accounting for almost all nucleons with momentum greater than the Fermi momentum (kF). A fundamental characteristic of SRC pairs is having large relative momenta as compared to kF, and smaller center of mass (c.m.) which indicates a small separation distance between the nucleons in the pair. Determining the c.m. momentum distribution of SRC pairs is essential for understanding their formation process. We report here on the extraction of the c.m. motion of proton-proton (pp) SRC pairs in carbon and, for the first time in heavier and ansymetric nuclei: aluminum, iron, and lead, from measurements of the A(e,e'pp) reaction. We find that the pair c.m. motion for these nuclei can be described by a three-dimensional Gaussian with a narrow width ranging from 140 to 170 MeV/c, approximately consistent with the sum of two mean-field nucleon momenta. Comparison with calculations appears to show that the SRC pairs are formed from mean-field nucleons in specific quantum states.

Original languageEnglish
Article number092501
JournalPhysical Review Letters
Volume121
Issue number9
DOIs
StatePublished - 31 Aug 2018

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