Tensor correlations measured He3(e,e′pp)n

Baghdasaryan, H. et al. (2010) Tensor correlations measured He3(e,e′pp)n. Physical Review Letters, 105(22), Art. 222501. (doi: 10.1103/PhysRevLett.105.222501)

Abstract

We have measured the He3(e,e′pp)n reaction at an incident energy of 4.7 GeV over a wide kinematic range. We identified spectator correlated pp and pn nucleon pairs by using kinematic cuts and measured their relative and total momentum distributions. This is the first measurement of the ratio of pp to pn pairs as a function of pair total momentum ptot. For pair relative momenta between 0.3 and 0.5  GeV/c, the ratio is very small at low ptot and rises to approximately 0.5 at large ptot. This shows the dominance of tensor over central correlations at this relative momentum.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Sokhan, Dr Daria and Fegan, Mr Stuart and Protopopescu, Dr Dan and MacGregor, Professor Douglas and McKinnon, Dr Bryan and Livingston, Dr Kenneth and Ireland, Professor David and Rosner, Professor Guenther
• Authors: Baghdasaryan, H., Weinstein, L.B., Laget, J.M., Adhikari, K.P., Aghasyan, M., Amarian, M., Anghinolfi, M., Avakian, H., Ball, J., Battaglieri, M., Bedlinskiy, I., Bennett, R.P., Berman, B.L., Biselli, A.S., Bookwalter, C., Briscoe, W.J., Brooks, W.K., Bültmann, S., Burkert, V.D., Carman, D.S., Crede, V., D’Angelo, A., Daniel, A., Dashyan, N., De Vita, R., De Sanctis, E., Deur, A., Dey, B., Dickson, R., Djalali, C., Dodge, G.E., Doughty, D., Dupre, R., Egiyan, H., El Alaoui, A., El Fassi, L., Eugenio, P., Fegan, S., Gabrielyan, M.Y., Gilfoyle, G.P., Giovanetti, K.L., Gohn, W., Gothe, R.W., Griffioen, K.A., Guidal, M., Guo, L., Gyurjyan, V., Hakobyan, H., Hanretty, C., Hyde, C.E., Hicks, K., Holtrop, M., Ilieva, Y., Ireland, D.G., Joo, K., Keller, D., Khandaker, M., Khetarpal, P., Kim, A., Kim, W., Klein, A., Klein, F.J., Konczykowski, P., Kubarovsky, V., Kuhn, S.E., Kuleshov, S.V., Kuznetsov, V., Kvaltine, N.D., Livingston, K., Lu, H.Y., MacGregor, I.J.D., Markov, N., Mayer, M., McAndrew, J., McKinnon, B., Meyer, C.A., Mikhailov, K., Mokeev, V., Moreno, B., Moriya, K., Morrison, B., Moutarde, H., Munevar, E., Nadel-Turonski, P., Nepali, C., Niccolai, S., Niculescu, G., Niculescu, I., Osipenko, M., Ostrovidov, A.I., Paremuzyan, R., Park, K., Park, S., Pasyuk, E., Pereira, S., Pisano, S., Pogorelko, O., Pozdniakov, S., Price, J.W., Procureur, S., Protopopescu, D., Ricco, G., Ripani, M., Rosner, G., Rossi, P., Sabatié, F., Salgado, C., Schumacher, R. A., Seraydaryan, H., Smith, G.D., Sober, D. I., Sokhan, D., Stepanyan, S.S., Stepanyan, S., Stoler, P., Strauch, S., Taiuti, M., Tang, W., Taylor, C.E., Tedeschi, D.J., Ungaro, M., Vineyard, M.F., Voutier, E., Watts, D.P., Weygand, D.P., Wood, M.H., Zhao, B., and Zhao, Z.W.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Physical Review Letters
• Publisher: American Physical Society
• ISSN: 0031-9007
• ISSN (Online): 1079-7114