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.

Cohen, E.o., Hen, O., Piasetzky, E., Weinstein, L.b., Duer, M., Schmidt, A., et al. (2018). Center of Mass Motion of Short-Range Correlated Nucleon Pairs studied via the A (e,e'pp) Reaction. PHYSICAL REVIEW LETTERS, 121(9), 092501 [10.1103/PhysRevLett.121.092501].

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

D'Angelo, A.
Membro del Collaboration Group
;
Lanza, L.;Rizzo, A.
Membro del Collaboration Group
;
2018-08-31

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.
31-ago-2018
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
English
Con Impact Factor ISI
Physics and Astronomy (all)
CLAS Collaboration
http://harvest.aps.org/v2/bagit/articles/10.1103/PhysRevLett.121.092501/apsxml
Cohen, E.o., Hen, O., Piasetzky, E., Weinstein, L.b., Duer, M., Schmidt, A., et al. (2018). Center of Mass Motion of Short-Range Correlated Nucleon Pairs studied via the A (e,e'pp) Reaction. PHYSICAL REVIEW LETTERS, 121(9), 092501 [10.1103/PhysRevLett.121.092501].
Cohen, Eo; Hen, O; Piasetzky, E; Weinstein, Lb; Duer, M; Schmidt, A; Korover, I; Hakobyan, H; Adhikari, S; Akbar, Z; Amaryan, Mj; Avakian, H; Ball, J; Barion, L; Battaglieri, M; Beck, A; Bedlinskiy, I; Biselli, As; Boiarinov, S; Briscoe, W; Burkert, Vd; Cao, F; Carman, Ds; Celentano, A; Charles, G; Chatagnon, P; Chetry, T; Ciullo, G; Clary, Ba; Contalbrigo, M; Crede, V; Cruz Torres, R; D'Angelo, A; Dashyan, N; De Vita, R; De Sanctis, E; Defurne, M; Deur, A; Diehl, S; Djalali, C; Duer, M; Dupre, R; Egiyan, H; Ehrhart, M; El Alaoui, A; El Fassi, L; Eugenio, P; Fedotov, G; Fersch, R; Filippi, A; Ghandilyan, Y; Giovanetti, Kl; Girod, Fx; Golovatch, E; Gothe, Rw; Griffioen, Ka; Hafidi, K; Harrison, N; Hauenstein, F; Heddle, D; Hicks, K; Holtrop, M; Ireland, Dg; Ishkhanov, Bs; Isupov, El; Jenkins, D; Jo, Hs; Johnston, S; Kabir, Ml; Keller, D; Khachatryan, G; Khachatryan, M; Khandaker, M; Kim, A; Kim, W; Klein, A; Klein, Fj; Korover, I; Kubarovsky, V; Kuhn, Se; Lanza, L; Lenisa, P; Livingston, K; Macgregor, Ijd; Marchand, D; Mckinnon, B; Mey-Tal Beck, S; Meyer, Ca; Mirazita, M; Mokeev, V; Montgomery, Ra; Movsisyan, A; Munoz Camacho, C; Mustapha, B; Nadel-Turonski, P; Niccolai, S; Niculescu, G; Osipenko, M; Ostrovidov, Ai; Paolone, M; Paremuzyan, R; Pasyuk, E; Pogorelko, O; Price, Jw; Prok, Y; Protopopescu, D; Ripani, M; Riser, D; Rizzo, A; Rosner, G; Rossi, P; Sabatié, F; Schmookler, Ba; Schumacher, Ra; Sharabian, Yg; Sokhan, D; Sparveris, N; Stepanyan, S; Strauch, S; Taiuti, M; Tan, Ja; Ungaro, M; Voskanyan, H; Voutier, E; Wang, R; Watts, Dp; Wei, X; Wood, Mh; Zachariou, N; Zhang, J; Zheng, X; Zhao, Zw
Articolo su rivista
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/207331
Citazioni
  • ???jsp.display-item.citation.pmc??? 0
  • Scopus 45
  • ???jsp.display-item.citation.isi??? 39
social impact