Hadrons in the Nuclear Medium

I. QCD dynamics of Hadron-Hadron Interaction I. QCD dynamics of Hadron-Hadron Interaction IV. Protons in the Superdense Nuclear Matter IV. Protons in the Superdense Nuclear Matter III. SIDIS on Deuteron with Recoil Nucleons III. SIDIS on Deuteron with Recoil Nucleons II. Measuring the deuteron wave function II. Measuring the deuteron wave function

(*) In Collaboration with Wim Cosyn, Carlos Granados, Mike McGauley

Hard-Nuclear Processes Mx

Hard-Hadron Processes

Brodsky, Farrar 1975 Matveev, Muradyan, Takhvelidze, 1975

Gilman, Gross, 2002 Brodsky, Chertock, 1976

Hard-Rescattering Model Frankfurt, Miller, MS, Strikman PRL 2000

Mirazita, et al, Phys. Rev. C 2004

What is interesting in this result?

(I)Transition from 3- step to 2-step processes

(II) The Shape of the S distribution of NN Scattering

Where we would like go from here ? 1. Generalization of break – up reactions to the deuteron break-up of other 2Baryons 3. Extension of break up reaction to virtaul photon scattering and extracting impact parameter distribution of hard scattering amplitude 2. Extraction of hard Baryonic Helicity Amplitudes from Polarized measurement

1. Generalization of break – up reactions to the deuteron break-up of other 2Baryons

2. Extraction of the hard NN helicity amplitudes for scattering from polarized measurements

II. Measuring Deuteron Momentum Distribution at Large Internal Momenta Q2 = 0.33 GeV2 Q2 = 0.667GeV2 Blomqvist et al1998Ulmer et al 2002

We study Deuteron Electrodisintegration knock-out M.S. PRC 2010 GEA L.Frankfurt, M.Strikman PRC 1997, M.S. IJMP01

L.Frankfurt, M.S. M.Strikman PRC 1997 GA GEA K.Egiyan, et al PRL07

M.S. PRC 2010

Boeglin, Jones, Voutier, E Preliminary for PAC

Where we would like go from here ? 1. Extend the measurement to missing momenta into a GeV/c region 2. Cover full angular range of recoil nucleon momentum

(III) Semi-Inclusive DIS Scattering off the Deuteron with Recoil Nucleon W.Cosyn, M.S. nucl-th- 2010,11 GEA approximation

Klimenko et al PRC06 Egiyan et al PRL07

Where we would like go from here ? 1. To have measurement in the extended region of Q2 and w. 2. Q2 and w dependence of will allow to map out the hadronization process of the DIS products 3. To search for the Color Trnasparency effect in the baryonic sector

- What we learned/confirmed from SRC Studies during last 7- 8 years IV. Protons in the Superdense Nuclear matter First: nuclear momentum distributions in the high momentum tail is similar to that of short range NN system/deuteron

Egiyan, et al PRC 2004

Egiyan, et al PRL 2006

Meaning of the scaling values introduce where In the situation when scaling is established Probability of finding 2N or 3N SRCs relative to deuteron and helium 3 Fraction of High momentum component of nuclear wave function due to 2N SRC 3N SRC

Isospin 1 states Isospin 0 states Second:

92% of the time two-nucleon high density fluctuations are proton and neutron at most 4% of the time proton-proton or neutron-neutron Piasetzky, MS, Frankfurt, Strikman, Watson PRL 2007 BNL data on A(p,2pn)X JLAB data A(e,e’pn)X

Combined Analysis R.Subdei, et al Science, 2008 pn pp nn

Consequence of the suppression of nn and pp SRCs

M. McGauley, MS Feb arxiv (1) (2) where we analyze data for symmetric nucleiFor and for other A’s use the relation (3) Neglecting contributions due to pp and nn SRCs one obtains boundary conditions

World Data on Inclusive A(e,e’)X and d(e,e’)X Data for we found data for

Remaining where using and

Extracting data for f(y) Al 27 y = Fe56 y = Au197 y = He y = 0.333

with C.Ciofi degli Atti, E. Pace, G.Salme, PRC 1991

proton

Some Implication of our Results Cooling of Neutron Star: Superfluidity of Protons in the Neutron Stars:

Protons in the Neutron Star Cores: Isospin Locking and Large Masses of Neutron Stars

Where we would like go from here ? 1. To have more precise measurements of pp and nn SRCs 2. Measure Isospin dependence of 3N SRCs 4. Probe the onset of non-nucleonic degrees in SRCs 3. Measure nuclei with large asymmetry parameters