Nuclear physics. Momentum sharing in imbalanced Fermi systems.

Academic Article

Abstract

  • The atomic nucleus is composed of two different kinds of fermions: protons and neutrons. If the protons and neutrons did not interact, the Pauli exclusion principle would force the majority of fermions (usually neutrons) to have a higher average momentum. Our high-energy electron-scattering measurements using (12)C, (27)Al, (56)Fe, and (208)Pb targets show that even in heavy, neutron-rich nuclei, short-range interactions between the fermions form correlated high-momentum neutron-proton pairs. Thus, in neutron-rich nuclei, protons have a greater probability than neutrons to have momentum greater than the Fermi momentum. This finding has implications ranging from nuclear few-body systems to neutron stars and may also be observable experimentally in two-spin-state, ultracold atomic gas systems.
  • Authors

  • Hen, O
  • Sargsian, M
  • Weinstein, LB
  • Piasetzky, E
  • Hakobyan, H
  • Higinbotham, DW
  • Braverman, M
  • Brooks, WK
  • Gilad, S
  • Adhikari, KP
  • Arrington, J
  • Asryan, G
  • Avakian, H
  • Ball, J
  • Baltzell, NA
  • Battaglieri, M
  • Beck, A
  • May-Tal Beck, S
  • Bedlinskiy, I
  • Bertozzi, W
  • Biselli, A
  • Burkert, VD
  • Cao, T
  • Carman, DS
  • Celentano, A
  • Chandavar, S
  • Colaneri, L
  • Cole, PL
  • Crede, V
  • D'Angelo, A
  • De Vita, R
  • Deur, A
  • Djalali, C
  • Doughty, D
  • Dugger, M
  • Dupre, R
  • Egiyan, H
  • El Alaoui, A
  • El Fassi, L
  • Elouadrhiri, L
  • Fedotov, G
  • Fegan, S
  • Forest, T
  • Garillon, B
  • Garcon, M
  • Gevorgyan, N
  • Ghandilyan, Y
  • Gilfoyle, GP
  • Girod, FX
  • Goetz, JT
  • Gothe, RW
  • Griffioen, KA
  • Guidal, M
  • Guo, L
  • Hafidi, K
  • Hanretty, C
  • Hattawy, M
  • Hicks, K
  • Holtrop, Maurik
  • Hyde, CE
  • Ilieva, Y
  • Ireland, DG
  • Ishkanov, BI
  • Isupov, EL
  • Jiang, H
  • Jo, HS
  • Joo, K
  • Keller, D
  • Khandaker, M
  • Kim, A
  • Kim, W
  • Klein, FJ
  • Koirala, S
  • Korover, I
  • Kuhn, SE
  • Kubarovsky, V
  • Lenisa, P
  • Levine, WI
  • Livingston, K
  • Lowry, M
  • Lu, HY
  • MacGregor, IJD
  • Markov, N
  • Mayer, M
  • McKinnon, B
  • Mineeva, T
  • Mokeev, V
  • Movsisyan, A
  • Munoz Camacho, C
  • Mustapha, B
  • Nadel-Turonski, P
  • Niccolai, S
  • Niculescu, G
  • Niculescu, I
  • Osipenko, M
  • Pappalardo, LL
  • Paremuzyan, R
  • Park, K
  • Pasyuk, E
  • Phelps, W
  • Pisano, S
  • Pogorelko, O
  • Price, JW
  • Procureur, S
  • Prok, Y
  • Protopopescu, D
  • Puckett, AJR
  • Rimal, D
  • Ripani, M
  • Ritchie, BG
  • Rizzo, A
  • Rosner, G
  • Roy, P
  • Rossi, P
  • Sabatié, F
  • Schott, D
  • Schumacher, RA
  • Sharabian, YG
  • Smith, GD
  • Shneor, R
  • Sokhan, D
  • Stepanyan, SS
  • Stepanyan, S
  • Stoler, P
  • Strauch, S
  • Sytnik, V
  • Taiuti, M
  • Tkachenko, S
  • Ungaro, M
  • Vlassov, AV
  • Voutier, E
  • Walford, NK
  • Wei, X
  • Wood, MH
  • Wood, SA
  • Zachariou, N
  • Zana, L
  • Zhao, ZW
  • Zheng, X
  • Zonta, I
  • Jefferson Lab CLAS Collaboration
  • Status

    Publication Date

  • October 31, 2014
  • Published In

    Keywords

  • Jefferson Lab CLAS Collaboration
  • Digital Object Identifier (doi)

    Pubmed Id

  • 25323697
  • Start Page

  • 614
  • End Page

  • 617
  • Volume

  • 346
  • Issue

  • 6209