[Jlab-seminars] Today's Physics Seminar: Or Hen; " Short-range correlations in imbalanced Fermi systems”

[Stephanie Tysor]

*Physics Seminar*

*Or Hen*

**

*Tel-Aviv University, Israel***

/"Short-range correlations 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 fermions, usually 
neutrons, to higher average momentum. In this talk I will present 
results from high-energy electron scattering experiments, which show 
that short-range interactions between the fermions form correlated, 
high-momentum, neutron-proton pairs. Thus, in neutron-rich nuclei the 
probability of finding a high-momentum (k>k_Fermi ) proton (a minority 
Fermion) is greater than that of a neutron (a majority Fermion). This 
has wide ranging implications for atomic, nuclear and astro physics, 
including neutrino-nucleus scattering, the EMC effect, the NuTeV 
anomaly, the nuclear symmetry energy and more. This feature is universal 
for imbalanced interacting Fermi systems and can also be observed 
experimentally in two-spin states ultra-cold atomic gas systems./

//

//

**

*Monday, November 24, 2014*

*11:00 am*

*CEBAF Auditorium*

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