Investigation of Proton-Proton Short-Range Correlations via the ¹²C(e,e'pp) Reaction

Thesis/Dissertation · Sat Dec 01 00:00:00 EST 2007

DOI:https://doi.org/10.2172/955696· OSTI ID:955696

Sheyor, Ran ^[1]

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1. Tel Aviv Univ., Ramat Aviv (Israel)

In this work we present a simultaneous measurement of the 12C(e,e'p) and 12C(e,e'pp) reactions. This measurement was done as part of the E01-015 experiment at Hall A of Jefferson Lab, at Q² = 2 (GeV/c) ² , x_B = 1.2, for an (e,e'p) missing-momentum range from 300 to 600 MeV/c. At these kinematics conditions, with a missing-momentum greater than the Fermi momentum of nucleons in a nucleus and far from the D excitation, nucleon-nucleon Short-Range Correlations (SRCs) are predicted to dominate the reaction. For 9.5 ± 2% of the ¹²C(e,e2p) events, a recoiling partner proton was observed in the opposite direction to the ¹²C(e,e2p) missing momentum vector with roughly equal momentum. This observation is an experimental signature for proton-proton short-range correlations (pp-SRC) in nuclei. Even though the probability of pp-SRCs in nuclei is small, they are important since they can teach us about the strong interaction at short distances. Moreover, as a manifestation of asymmetric

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-060R23177
• OSTI ID: 955696
• Report Number(s): JLAB-PHY-07-794; TRN: US1004721
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
EXCITATION
NUCLEI
NUCLEONS
PROBABILITY
PROTONS
STRONG INTERACTIONS
VECTORS