Momentum sharing in imbalanced Fermi systems

O. Hen; M. Sargsian; L. B. Weinstein; E. Piasetzky; H. Hakobyan; D. W. Higinbotham; M. Braverman; W. K. Brooks; S. Gilad; K. P. Adhikari; J. Arrington; G. Asryan; H. Avakian; J. Ball; N. A. Baltzell; M. Battaglieri; A. Beck; S. May-Tal Beck; I. Bedlinskiy; W. Bertozzi; A. Biselli; V. D. Burkert; T. Cao; D. S. Carman; A. Celentano; S. Chandavar; L. Colaneri; P. L. Cole; V. Crede; A. D'Angelo; R. De Vita; A. Deur; C. Djalali; D. Doughty; M. Dugger; R. Dupre; H. Egiyan; A. El Alaoui; L. El Fassi; L. Elouadrhiri; G. Fedotov; S. Fegan; T. Forest; B. Garillon; M. Garcon; N. Gevorgyan; Y. Ghandilyan; G. P. Gilfoyle; F. X. Girod; J. T. Goetz; R. W. Gothe; K. A. Griffioen; M. Guidal; L. Guo; K. Hafidi; C. Hanretty; M. Hattawy; K. Hicks; M. Holtrop; C. E. Hyde; Y. Ilieva; D. G. Ireland; B. I. Ishkanov; E. L. Isupov; H. Jiang; H. S. Jo; K. Joo; D. Keller; M. Khandaker; A. Kim; W. Kim; F. J. Klein; S. Koirala; I. Korover; S. E. Kuhn; V. Kubarovsky; P. Lenisa; W. I. Levine; K. Livingston; M. Lowry; H. Y. Lu; I. J.D. MacGregor; N. Markov; M. Mayer; B. McKinnon; T. Mineeva; V. Mokeev; A. Movsisyan; C. Munoz Camacho; B. Mustapha; P. Nadel-Turonski; S. Niccolai; G. Niculescu; I. Niculescu; M. Osipenko; L. L. Pappalardo; R. Paremuzyan; K. Park; E. Pasyuk; W. Phelps; S. Pisano; O. Pogorelko; J. W. Price; S. Procureur; Y. Prok; D. Protopopescu; A. J.R. Puckett; D. Rimal; M. Ripani; B. G. Ritchie; A. Rizzo; G. Rosner; P. Roy; P. Rossi; F. Sabatié; D. Schott; R. A. Schumacher; Y. G. Sharabian; G. D. Smith; R. Shneor; D. Sokhan; S. S. Stepanyan; S. Stepanyan; P. Stoler; S. Strauch; V. Sytnik; M. Taiuti; S. Tkachenko; M. Ungaro; A. V. Vlassov; E. Voutier; N. K. Walford; X. Wei; M. H. Wood; S. A. Wood; N. Zachariou; L. Zana; Z. W. Zhao; X. Zheng; I. Zonta

doi:10.1126/science.1256785

Momentum sharing in imbalanced Fermi systems

O. Hen, M. Sargsian, L. B. Weinstein, E. Piasetzky, H. Hakobyan, D. W. Higinbotham, M. Braverman, W. K. Brooks, S. Gilad, K. P. Adhikari, J. Arrington, G. Asryan, H. Avakian, J. Ball, N. A. Baltzell, M. Battaglieri, A. Beck, S. May-Tal Beck, I. Bedlinskiy, W. BertozziA. Biselli, V. D. Burkert, T. Cao, D. S. Carman, A. Celentano, S. Chandavar, L. Colaneri, P. L. Cole, V. Crede, A. D'Angelo, R. De Vita, A. Deur, C. Djalali, D. Doughty, M. Dugger, R. Dupre, H. Egiyan, A. El Alaoui, L. El Fassi, L. Elouadrhiri, G. Fedotov, S. Fegan, T. Forest, B. Garillon, M. Garcon, N. Gevorgyan, Y. Ghandilyan, G. P. Gilfoyle, F. X. Girod, J. T. Goetz, R. W. Gothe, K. A. Griffioen, M. Guidal, L. Guo, K. Hafidi, C. Hanretty, M. Hattawy, K. Hicks, M. Holtrop, C. E. Hyde, Y. Ilieva, D. G. Ireland, B. I. Ishkanov, E. L. Isupov, H. Jiang, H. S. Jo, K. Joo, D. Keller, M. Khandaker, A. Kim, W. Kim, F. J. Klein, S. Koirala, I. Korover, S. E. Kuhn, V. Kubarovsky, P. Lenisa, W. I. Levine, K. Livingston, M. Lowry, H. Y. Lu, I. J.D. MacGregor, N. Markov, M. Mayer, B. McKinnon, T. Mineeva, V. Mokeev, A. Movsisyan, C. Munoz Camacho, B. Mustapha, P. Nadel-Turonski, S. Niccolai, G. Niculescu, I. Niculescu, M. Osipenko, L. L. Pappalardo, R. Paremuzyan, K. Park, E. Pasyuk, W. Phelps, S. Pisano, O. Pogorelko, J. W. Price, S. Procureur, Y. Prok, D. Protopopescu, A. J.R. Puckett, D. Rimal, M. Ripani, B. G. Ritchie, A. Rizzo, G. Rosner, P. Roy, P. Rossi, F. Sabatié, D. Schott, R. A. Schumacher, Y. G. Sharabian, G. D. Smith, R. Shneor, D. Sokhan, S. S. Stepanyan, S. Stepanyan, P. Stoler, S. Strauch, V. Sytnik, M. Taiuti, S. Tkachenko, M. Ungaro, A. V. Vlassov, E. Voutier, N. K. Walford, X. Wei, M. H. Wood, S. A. Wood, N. Zachariou, L. Zana, Z. W. Zhao, X. Zheng, I. Zonta

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

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 ¹²C, ²⁷Al, ⁵⁶Fe, and ²⁰⁸Pb 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.

Original language	English
Pages (from-to)	614-617
Number of pages	4
Journal	Science
Volume	346
Issue number	6209
DOIs	https://doi.org/10.1126/science.1256785
State	Published - 31 Oct 2014

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10.1126/science.1256785

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Hen, O., Sargsian, M., Weinstein, L. B., Piasetzky, E., Hakobyan, H., Higinbotham, D. W., Braverman, M., Brooks, W. K., Gilad, S., Adhikari, K. P., Arrington, J., Asryan, G., Avakian, H., Ball, J., Baltzell, N. A., Battaglieri, M., Beck, A., May-Tal Beck, S., Bedlinskiy, I., ... Zonta, I. (2014). Momentum sharing in imbalanced Fermi systems. Science, 346(6209), 614-617. https://doi.org/10.1126/science.1256785

Hen, O. ; Sargsian, M. ; Weinstein, L. B. ; Piasetzky, E. ; Hakobyan, H. ; Higinbotham, D. W. ; Braverman, M. ; Brooks, W. K. ; Gilad, S. ; Adhikari, K. P. ; Arrington, J. ; Asryan, G. ; Avakian, H. ; Ball, J. ; Baltzell, N. A. ; Battaglieri, M. ; Beck, A. ; May-Tal Beck, S. ; Bedlinskiy, I. ; Bertozzi, W. ; Biselli, A. ; Burkert, V. D. ; Cao, T. ; Carman, D. S. ; Celentano, A. ; Chandavar, S. ; Colaneri, L. ; Cole, P. L. ; 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, G. P. ; Girod, F. X. ; Goetz, J. T. ; Gothe, R. W. ; Griffioen, K. A. ; Guidal, M. ; Guo, L. ; Hafidi, K. ; Hanretty, C. ; Hattawy, M. ; Hicks, K. ; Holtrop, M. ; Hyde, C. E. ; Ilieva, Y. ; Ireland, D. G. ; Ishkanov, B. I. ; Isupov, E. L. ; Jiang, H. ; Jo, H. S. ; Joo, K. ; Keller, D. ; Khandaker, M. ; Kim, A. ; Kim, W. ; Klein, F. J. ; Koirala, S. ; Korover, I. ; Kuhn, S. E. ; Kubarovsky, V. ; Lenisa, P. ; Levine, W. I. ; Livingston, K. ; Lowry, M. ; Lu, H. Y. ; MacGregor, I. J.D. ; 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, L. L. ; Paremuzyan, R. ; Park, K. ; Pasyuk, E. ; Phelps, W. ; Pisano, S. ; Pogorelko, O. ; Price, J. W. ; Procureur, S. ; Prok, Y. ; Protopopescu, D. ; Puckett, A. J.R. ; Rimal, D. ; Ripani, M. ; Ritchie, B. G. ; Rizzo, A. ; Rosner, G. ; Roy, P. ; Rossi, P. ; Sabatié, F. ; Schott, D. ; Schumacher, R. A. ; Sharabian, Y. G. ; Smith, G. D. ; Shneor, R. ; Sokhan, D. ; Stepanyan, S. S. ; Stepanyan, S. ; Stoler, P. ; Strauch, S. ; Sytnik, V. ; Taiuti, M. ; Tkachenko, S. ; Ungaro, M. ; Vlassov, A. V. ; Voutier, E. ; Walford, N. K. ; Wei, X. ; Wood, M. H. ; Wood, S. A. ; Zachariou, N. ; Zana, L. ; Zhao, Z. W. ; Zheng, X. ; Zonta, I. / Momentum sharing in imbalanced Fermi systems. In: Science. 2014 ; Vol. 346, No. 6209. pp. 614-617.

@article{d3ae8fd58cb1423da7cc0fa951c62df9,

title = "Momentum sharing in imbalanced Fermi systems",

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 12C, 27Al, 56Fe, and 208Pb 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.",

author = "O. Hen and M. Sargsian and Weinstein, {L. B.} and E. Piasetzky and H. Hakobyan and Higinbotham, {D. W.} and M. Braverman and Brooks, {W. K.} and S. Gilad and Adhikari, {K. P.} and J. Arrington and G. Asryan and H. Avakian and J. Ball and Baltzell, {N. A.} and M. Battaglieri and A. Beck and {May-Tal Beck}, S. and I. Bedlinskiy and W. Bertozzi and A. Biselli and Burkert, {V. D.} and T. Cao and Carman, {D. S.} and A. Celentano and S. Chandavar and L. Colaneri and Cole, {P. L.} and V. Crede and A. D'Angelo and {De Vita}, R. and A. Deur and C. Djalali and D. Doughty and M. Dugger and R. Dupre and H. Egiyan and {El Alaoui}, A. and {El Fassi}, L. and L. Elouadrhiri and G. Fedotov and S. Fegan and T. Forest and B. Garillon and M. Garcon and N. Gevorgyan and Y. Ghandilyan and Gilfoyle, {G. P.} and Girod, {F. X.} and Goetz, {J. T.} and Gothe, {R. W.} and Griffioen, {K. A.} and M. Guidal and L. Guo and K. Hafidi and C. Hanretty and M. Hattawy and K. Hicks and M. Holtrop and Hyde, {C. E.} and Y. Ilieva and Ireland, {D. G.} and Ishkanov, {B. I.} and Isupov, {E. L.} and H. Jiang and Jo, {H. S.} and K. Joo and D. Keller and M. Khandaker and A. Kim and W. Kim and Klein, {F. J.} and S. Koirala and I. Korover and Kuhn, {S. E.} and V. Kubarovsky and P. Lenisa and Levine, {W. I.} and K. Livingston and M. Lowry and Lu, {H. Y.} and MacGregor, {I. J.D.} and N. Markov and M. Mayer and B. McKinnon and T. Mineeva and V. Mokeev and A. Movsisyan and {Munoz Camacho}, C. and B. Mustapha and P. Nadel-Turonski and S. Niccolai and G. Niculescu and I. Niculescu and M. Osipenko and Pappalardo, {L. L.} and R. Paremuzyan and K. Park and E. Pasyuk and W. Phelps and S. Pisano and O. Pogorelko and Price, {J. W.} and S. Procureur and Y. Prok and D. Protopopescu and Puckett, {A. J.R.} and D. Rimal and M. Ripani and Ritchie, {B. G.} and A. Rizzo and G. Rosner and P. Roy and P. Rossi and F. Sabati{\'e} and D. Schott and Schumacher, {R. A.} and Sharabian, {Y. G.} and Smith, {G. D.} and R. Shneor and D. Sokhan and Stepanyan, {S. S.} and S. Stepanyan and P. Stoler and S. Strauch and V. Sytnik and M. Taiuti and S. Tkachenko and M. Ungaro and Vlassov, {A. V.} and E. Voutier and Walford, {N. K.} and X. Wei and Wood, {M. H.} and Wood, {S. A.} and N. Zachariou and L. Zana and Zhao, {Z. W.} and X. Zheng and I. Zonta",

year = "2014",

month = oct,

day = "31",

doi = "10.1126/science.1256785",

language = "אנגלית",

volume = "346",

pages = "614--617",

journal = "Science",

issn = "0036-8075",

publisher = "American Association for the Advancement of Science",

number = "6209",

}

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, M, 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 2014, 'Momentum sharing in imbalanced Fermi systems', Science, vol. 346, no. 6209, pp. 614-617. https://doi.org/10.1126/science.1256785

Momentum sharing in imbalanced Fermi systems. / Hen, O.; Sargsian, M.; Weinstein, L. B.; Piasetzky, E.; Hakobyan, H.; Higinbotham, D. W.; Braverman, M.; Brooks, W. K.; Gilad, S.; Adhikari, K. P.; Arrington, J.; Asryan, G.; Avakian, H.; Ball, J.; Baltzell, N. A.; Battaglieri, M.; Beck, A.; May-Tal Beck, S.; Bedlinskiy, I.; Bertozzi, W.; Biselli, A.; Burkert, V. D.; Cao, T.; Carman, D. S.; Celentano, A.; Chandavar, S.; Colaneri, L.; Cole, P. L.; 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, G. P.; Girod, F. X.; Goetz, J. T.; Gothe, R. W.; Griffioen, K. A.; Guidal, M.; Guo, L.; Hafidi, K.; Hanretty, C.; Hattawy, M.; Hicks, K.; Holtrop, M.; Hyde, C. E.; Ilieva, Y.; Ireland, D. G.; Ishkanov, B. I.; Isupov, E. L.; Jiang, H.; Jo, H. S.; Joo, K.; Keller, D.; Khandaker, M.; Kim, A.; Kim, W.; Klein, F. J.; Koirala, S.; Korover, I.; Kuhn, S. E.; Kubarovsky, V.; Lenisa, P.; Levine, W. I.; Livingston, K.; Lowry, M.; Lu, H. Y.; MacGregor, I. J.D.; 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, L. L.; Paremuzyan, R.; Park, K.; Pasyuk, E.; Phelps, W.; Pisano, S.; Pogorelko, O.; Price, J. W.; Procureur, S.; Prok, Y.; Protopopescu, D.; Puckett, A. J.R.; Rimal, D.; Ripani, M.; Ritchie, B. G.; Rizzo, A.; Rosner, G.; Roy, P.; Rossi, P.; Sabatié, F.; Schott, D.; Schumacher, R. A.; Sharabian, Y. G.; Smith, G. D.; Shneor, R.; Sokhan, D.; Stepanyan, S. S.; Stepanyan, S.; Stoler, P.; Strauch, S.; Sytnik, V.; Taiuti, M.; Tkachenko, S.; Ungaro, M.; Vlassov, A. V.; Voutier, E.; Walford, N. K.; Wei, X.; Wood, M. H.; Wood, S. A.; Zachariou, N.; Zana, L.; Zhao, Z. W.; Zheng, X.; Zonta, I.

In: Science, Vol. 346, No. 6209, 31.10.2014, p. 614-617.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Momentum sharing in imbalanced Fermi systems

AU - Hen, O.

AU - Sargsian, M.

AU - Weinstein, L. B.

AU - Piasetzky, E.

AU - Hakobyan, H.

AU - Higinbotham, D. W.

AU - Braverman, M.

AU - Brooks, W. K.

AU - Gilad, S.

AU - Adhikari, K. P.

AU - Arrington, J.

AU - Asryan, G.

AU - Avakian, H.

AU - Ball, J.

AU - Baltzell, N. A.

AU - Battaglieri, M.

AU - Beck, A.

AU - May-Tal Beck, S.

AU - Bedlinskiy, I.

AU - Bertozzi, W.

AU - Biselli, A.

AU - Burkert, V. D.

AU - Cao, T.

AU - Carman, D. S.

AU - Celentano, A.

AU - Chandavar, S.

AU - Colaneri, L.

AU - Cole, P. L.

AU - Crede, V.

AU - D'Angelo, A.

AU - De Vita, R.

AU - Deur, A.

AU - Djalali, C.

AU - Doughty, D.

AU - Dugger, M.

AU - Dupre, R.

AU - Egiyan, H.

AU - El Alaoui, A.

AU - El Fassi, L.

AU - Elouadrhiri, L.

AU - Fedotov, G.

AU - Fegan, S.

AU - Forest, T.

AU - Garillon, B.

AU - Garcon, M.

AU - Gevorgyan, N.

AU - Ghandilyan, Y.

AU - Gilfoyle, G. P.

AU - Girod, F. X.

AU - Goetz, J. T.

AU - Gothe, R. W.

AU - Griffioen, K. A.

AU - Guidal, M.

AU - Guo, L.

AU - Hafidi, K.

AU - Hanretty, C.

AU - Hattawy, M.

AU - Hicks, K.

AU - Holtrop, M.

AU - Hyde, C. E.

AU - Ilieva, Y.

AU - Ireland, D. G.

AU - Ishkanov, B. I.

AU - Isupov, E. L.

AU - Jiang, H.

AU - Jo, H. S.

AU - Joo, K.

AU - Keller, D.

AU - Khandaker, M.

AU - Kim, A.

AU - Kim, W.

AU - Klein, F. J.

AU - Koirala, S.

AU - Korover, I.

AU - Kuhn, S. E.

AU - Kubarovsky, V.

AU - Lenisa, P.

AU - Levine, W. I.

AU - Livingston, K.

AU - Lowry, M.

AU - Lu, H. Y.

AU - MacGregor, I. J.D.

AU - Markov, N.

AU - Mayer, M.

AU - McKinnon, B.

AU - Mineeva, T.

AU - Mokeev, V.

AU - Movsisyan, A.

AU - Munoz Camacho, C.

AU - Mustapha, B.

AU - Nadel-Turonski, P.

AU - Niccolai, S.

AU - Niculescu, G.

AU - Niculescu, I.

AU - Osipenko, M.

AU - Pappalardo, L. L.

AU - Paremuzyan, R.

AU - Park, K.

AU - Pasyuk, E.

AU - Phelps, W.

AU - Pisano, S.

AU - Pogorelko, O.

AU - Price, J. W.

AU - Procureur, S.

AU - Prok, Y.

AU - Protopopescu, D.

AU - Puckett, A. J.R.

AU - Rimal, D.

AU - Ripani, M.

AU - Ritchie, B. G.

AU - Rizzo, A.

AU - Rosner, G.

AU - Roy, P.

AU - Rossi, P.

AU - Sabatié, F.

AU - Schott, D.

AU - Schumacher, R. A.

AU - Sharabian, Y. G.

AU - Smith, G. D.

AU - Shneor, R.

AU - Sokhan, D.

AU - Stepanyan, S. S.

AU - Stepanyan, S.

AU - Stoler, P.

AU - Strauch, S.

AU - Sytnik, V.

AU - Taiuti, M.

AU - Tkachenko, S.

AU - Ungaro, M.

AU - Vlassov, A. V.

AU - Voutier, E.

AU - Walford, N. K.

AU - Wei, X.

AU - Wood, M. H.

AU - Wood, S. A.

AU - Zachariou, N.

AU - Zana, L.

AU - Zhao, Z. W.

AU - Zheng, X.

AU - Zonta, I.

PY - 2014/10/31

Y1 - 2014/10/31

N2 - 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 12C, 27Al, 56Fe, and 208Pb 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.

AB - 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 12C, 27Al, 56Fe, and 208Pb 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.

UR - http://www.scopus.com/inward/record.url?scp=84908701593&partnerID=8YFLogxK

U2 - 10.1126/science.1256785

DO - 10.1126/science.1256785

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

C2 - 25323697

AN - SCOPUS:84908701593

VL - 346

SP - 614

EP - 617

JO - Science

JF - Science

SN - 0036-8075

IS - 6209

ER -

Momentum sharing in imbalanced Fermi systems

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