Nuclear physics. Momentum sharing in imbalanced Fermi systems

O Hen¹, M Sargsian², L B Weinstein³, E Piasetzky⁴, H Hakobyan⁵, D W Higinbotham⁶, M Braverman⁴, W K Brooks⁷, S Gilad⁸, K P Adhikari³, J Arrington⁹, G Asryan¹⁰, H Avakian⁶, J Ball¹¹, N A Baltzell⁹, M Battaglieri¹², A Beck¹³, S May-Tal Beck¹³, I Bedlinskiy¹⁴, W Bertozzi⁸, A Biselli¹⁵, V D Burkert⁶, T Cao¹⁶, D S Carman⁶, A Celentano¹², S Chandavar¹⁷, L Colaneri¹⁸, P L Cole¹⁹, V Crede²⁰, A D'Angelo²¹, R De Vita¹², A Deur⁶, C Djalali²², D Doughty²³, M Dugger²⁴, R Dupre²⁵, H Egiyan⁶, A El Alaoui⁹, L El Fassi³, L Elouadrhiri⁶, G Fedotov²⁶, S Fegan¹², T Forest²⁷, B Garillon²⁵, M Garcon¹¹, N Gevorgyan¹⁰, Y Ghandilyan¹⁰, G P Gilfoyle²⁸, F X Girod⁶, J T Goetz¹⁷, R W Gothe¹⁶, K A Griffioen²⁹, M Guidal²⁵, L Guo³⁰, K Hafidi⁹, C Hanretty³¹, M Hattawy²⁵, K Hicks¹⁷, M Holtrop³², C E Hyde³, Y Ilieva³³, D G Ireland³⁴, B I Ishkanov³⁵, E L Isupov³⁵, H Jiang¹⁶, H S Jo²⁵, K Joo³⁶, D Keller³¹, M Khandaker³⁷, A Kim³⁸, W Kim³⁸, F J Klein³⁹, S Koirala³, I Korover⁴, S E Kuhn³, V Kubarovsky⁶, P Lenisa⁴⁰, W I Levine⁴¹, K Livingston³⁴, M Lowry⁶, H Y Lu¹⁶, I J D MacGregor³⁴, N Markov³⁶, M Mayer³, B McKinnon³⁴, T Mineeva³⁶, V Mokeev⁴², A Movsisyan⁴⁰, C Munoz Camacho²⁵, B Mustapha⁹, P Nadel-Turonski⁶, S Niccolai²⁵, G Niculescu⁴³, I Niculescu⁴³, M Osipenko¹², L L Pappalardo⁴⁴, R Paremuzyan⁴⁵, K Park⁴⁶, E Pasyuk⁶, W Phelps², S Pisano⁴⁷, O Pogorelko¹⁴, J W Price⁴⁸, S Procureur¹¹, Y Prok⁴⁹, D Protopopescu³⁴, A J R Puckett³⁶, D Rimal², M Ripani¹², B G Ritchie²⁴, A Rizzo¹⁸, G Rosner³⁴, P Roy²⁰, P Rossi⁶, F Sabatié¹¹, D Schott⁵⁰, R A Schumacher⁴¹, Y G Sharabian⁶, G D Smith⁵¹, R Shneor⁴, D Sokhan³⁴, S S Stepanyan³⁸, S Stepanyan⁶, P Stoler⁵², S Strauch³³, V Sytnik⁷, M Taiuti⁵³, S Tkachenko³¹, M Ungaro⁶, A V Vlassov¹⁴, E Voutier⁵⁴, N K Walford³⁹, X Wei⁶, M H Wood⁵⁵, S A Wood⁶, N Zachariou¹⁶, L Zana⁵⁶, Z W Zhao³¹, X Zheng³¹, I Zonta¹⁸; Jefferson Lab CLAS Collaboration

Affiliations

¹ Tel Aviv University, Tel Aviv 69978, Israel. or.chen@mail.huji.ac.il.
² Florida International University, Miami, FL 33199, USA.
³ Old Dominion University, Norfolk, VA 23529, USA.
⁴ Tel Aviv University, Tel Aviv 69978, Israel.
⁵ Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile. Yerevan Physics Institute, 375036 Yerevan, Armenia.
⁶ Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA.
⁷ Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile.
⁸ Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
⁹ Argonne National Laboratory, Argonne, IL 60439, USA.
¹⁰ Yerevan Physics Institute, 375036 Yerevan, Armenia.
¹¹ Commissariat à l'Energie Atomique et aux Energies Alternatives, Centre de Saclay, Irfu/Service de Physique Nucléaire, 91191 Gif-sur-Yvette, France.
¹² Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Genova, 16146 Genova, Italy.
¹³ Tel Aviv University, Tel Aviv 69978, Israel. Nuclear Research Center Negev, P.O. Box 9001, Beer-Sheva 84190, Israel.
¹⁴ Institute of Theoretical and Experimental Physics, Moscow, 117259, Russia.
¹⁵ Fairfield University, Fairfield, CT 06824, USA.
¹⁶ University of South Carolina, Columbia, SC 29208, USA.
¹⁷ Ohio University, Athens, OH 45701, USA.
¹⁸ INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy.
¹⁹ Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA. Idaho State University, Pocatello, ID 83209, USA. Catholic University of America, Washington, DC 20064, USA.
²⁰ Florida State University, Tallahassee, FL 32306, USA.
²¹ INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy. Università di Roma Tor Vergata, 00133 Rome, Italy.
²² University of South Carolina, Columbia, SC 29208, USA. University of Iowa, Iowa City, IA 52242, USA.
²³ Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA. Christopher Newport University, Newport News, VA 23606, USA.
²⁴ Arizona State University, Tempe, AZ 85287-1504, USA.
²⁵ Institut de Physique Nucléaire ORSAY, Orsay, France.
²⁶ University of South Carolina, Columbia, SC 29208, USA. Skobeltsyn Institute of Nuclear Physics, Lomonosov, Russia.
²⁷ Idaho State University, Pocatello, ID 83209, USA.
²⁸ University of Richmond, Richmond, VA 23173, USA.
²⁹ College of William and Mary, Williamsburg, VA 23187-8795, USA.
³⁰ Florida International University, Miami, FL 33199, USA. Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA.
³¹ University of Virginia, Charlottesville, VA 22901, USA.
³² University of New Hampshire, Durham, NH 03824-3568, USA.
³³ University of South Carolina, Columbia, SC 29208, USA. The George Washington University, Washington, DC 20052, USA.
³⁴ University of Glasgow, Glasgow G12 8QQ, UK.
³⁵ Skobeltsyn Institute of Nuclear Physics, Lomonosov, Russia.
³⁶ University of Connecticut, Storrs, CT 06269, USA.
³⁷ Idaho State University, Pocatello, ID 83209, USA. Norfolk State University, Norfolk, VA 23504, USA.
³⁸ Kyungpook National University, Daegu 702-701, Republic of Korea.
³⁹ Catholic University of America, Washington, DC 20064, USA.
⁴⁰ INFN, Sezione di Ferrara, 44100 Ferrara, Italy.
⁴¹ Carnegie Mellon University, Pittsburgh, PA 15213, USA.
⁴² Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA. Institut de Physique Nucléaire ORSAY, Orsay, France. Moscow State University, Moscow, 119234, Russia.
⁴³ James Madison University, Harrisonburg, VA 22807, USA.
⁴⁴ INFN, Sezione di Ferrara, 44100 Ferrara, Italy. Universitá di Ferrara, 44122 Ferrara, Italy.
⁴⁵ Yerevan Physics Institute, 375036 Yerevan, Armenia. University of New Hampshire, Durham, NH 03824-3568, USA.
⁴⁶ Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA. Kyungpook National University, Daegu 702-701, Republic of Korea.
⁴⁷ INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy.
⁴⁸ California State University, Dominguez Hills, Carson, CA 90747, USA.
⁴⁹ Old Dominion University, Norfolk, VA 23529, USA. University of Virginia, Charlottesville, VA 22901, USA.
⁵⁰ The George Washington University, Washington, DC 20052, USA.
⁵¹ Edinburgh University, Edinburgh EH9 3JZ, UK.
⁵² Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA.
⁵³ Università di Genova, 16146 Genova, Italy.
⁵⁴ Laboratoire de Physique Subatomique et de Cosmologie, Universite Joseph Fourier, CNRS/IN2P3, Institut National Polytechnique, Grenoble, France.
⁵⁵ University of South Carolina, Columbia, SC 29208, USA. Canisius College, Buffalo, NY 14208, USA.
⁵⁶ University of New Hampshire, Durham, NH 03824-3568, USA. Edinburgh University, Edinburgh EH9 3JZ, UK.

PMID: 25323697
DOI: 10.1126/science.1256785

Nuclear physics. Momentum sharing in imbalanced Fermi systems

O Hen et al. Science. 2014.

. 2014 Oct 31;346(6209):614-7.

doi: 10.1126/science.1256785. Epub 2014 Oct 16.

Authors

Affiliations

¹ Tel Aviv University, Tel Aviv 69978, Israel. or.chen@mail.huji.ac.il.
² Florida International University, Miami, FL 33199, USA.
³ Old Dominion University, Norfolk, VA 23529, USA.
⁴ Tel Aviv University, Tel Aviv 69978, Israel.
⁵ Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile. Yerevan Physics Institute, 375036 Yerevan, Armenia.
⁶ Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA.
⁷ Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile.
⁸ Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
⁹ Argonne National Laboratory, Argonne, IL 60439, USA.
¹⁰ Yerevan Physics Institute, 375036 Yerevan, Armenia.
¹¹ Commissariat à l'Energie Atomique et aux Energies Alternatives, Centre de Saclay, Irfu/Service de Physique Nucléaire, 91191 Gif-sur-Yvette, France.
¹² Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Genova, 16146 Genova, Italy.
¹³ Tel Aviv University, Tel Aviv 69978, Israel. Nuclear Research Center Negev, P.O. Box 9001, Beer-Sheva 84190, Israel.
¹⁴ Institute of Theoretical and Experimental Physics, Moscow, 117259, Russia.
¹⁵ Fairfield University, Fairfield, CT 06824, USA.
¹⁶ University of South Carolina, Columbia, SC 29208, USA.
¹⁷ Ohio University, Athens, OH 45701, USA.
¹⁸ INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy.
¹⁹ Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA. Idaho State University, Pocatello, ID 83209, USA. Catholic University of America, Washington, DC 20064, USA.
²⁰ Florida State University, Tallahassee, FL 32306, USA.
²¹ INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy. Università di Roma Tor Vergata, 00133 Rome, Italy.
²² University of South Carolina, Columbia, SC 29208, USA. University of Iowa, Iowa City, IA 52242, USA.
²³ Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA. Christopher Newport University, Newport News, VA 23606, USA.
²⁴ Arizona State University, Tempe, AZ 85287-1504, USA.
²⁵ Institut de Physique Nucléaire ORSAY, Orsay, France.
²⁶ University of South Carolina, Columbia, SC 29208, USA. Skobeltsyn Institute of Nuclear Physics, Lomonosov, Russia.
²⁷ Idaho State University, Pocatello, ID 83209, USA.
²⁸ University of Richmond, Richmond, VA 23173, USA.
²⁹ College of William and Mary, Williamsburg, VA 23187-8795, USA.
³⁰ Florida International University, Miami, FL 33199, USA. Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA.
³¹ University of Virginia, Charlottesville, VA 22901, USA.
³² University of New Hampshire, Durham, NH 03824-3568, USA.
³³ University of South Carolina, Columbia, SC 29208, USA. The George Washington University, Washington, DC 20052, USA.
³⁴ University of Glasgow, Glasgow G12 8QQ, UK.
³⁵ Skobeltsyn Institute of Nuclear Physics, Lomonosov, Russia.
³⁶ University of Connecticut, Storrs, CT 06269, USA.
³⁷ Idaho State University, Pocatello, ID 83209, USA. Norfolk State University, Norfolk, VA 23504, USA.
³⁸ Kyungpook National University, Daegu 702-701, Republic of Korea.
³⁹ Catholic University of America, Washington, DC 20064, USA.
⁴⁰ INFN, Sezione di Ferrara, 44100 Ferrara, Italy.
⁴¹ Carnegie Mellon University, Pittsburgh, PA 15213, USA.
⁴² Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA. Institut de Physique Nucléaire ORSAY, Orsay, France. Moscow State University, Moscow, 119234, Russia.
⁴³ James Madison University, Harrisonburg, VA 22807, USA.
⁴⁴ INFN, Sezione di Ferrara, 44100 Ferrara, Italy. Universitá di Ferrara, 44122 Ferrara, Italy.
⁴⁵ Yerevan Physics Institute, 375036 Yerevan, Armenia. University of New Hampshire, Durham, NH 03824-3568, USA.
⁴⁶ Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA. Kyungpook National University, Daegu 702-701, Republic of Korea.
⁴⁷ INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy.
⁴⁸ California State University, Dominguez Hills, Carson, CA 90747, USA.
⁴⁹ Old Dominion University, Norfolk, VA 23529, USA. University of Virginia, Charlottesville, VA 22901, USA.
⁵⁰ The George Washington University, Washington, DC 20052, USA.
⁵¹ Edinburgh University, Edinburgh EH9 3JZ, UK.
⁵² Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA.
⁵³ Università di Genova, 16146 Genova, Italy.
⁵⁴ Laboratoire de Physique Subatomique et de Cosmologie, Universite Joseph Fourier, CNRS/IN2P3, Institut National Polytechnique, Grenoble, France.
⁵⁵ University of South Carolina, Columbia, SC 29208, USA. Canisius College, Buffalo, NY 14208, USA.
⁵⁶ University of New Hampshire, Durham, NH 03824-3568, USA. Edinburgh University, Edinburgh EH9 3JZ, UK.

PMID: 25323697
DOI: 10.1126/science.1256785

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.

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Nuclear physics. Momentum sharing in imbalanced Fermi systems

Affiliations

Nuclear physics. Momentum sharing in imbalanced Fermi systems

Authors

Affiliations

Abstract

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LinkOut - more resources

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