4.8 Article

Quenching of Spectroscopic Factors for Proton Removal in Oxygen Isotopes

Journal

PHYSICAL REVIEW LETTERS
Volume 107, Issue 3, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.032501

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Funding

  1. Office of Nuclear Physics, U. S. Department of Energy (Oak Ridge National Laboratory)
  2. University of Washington [DE-FC02-07ER41457]
  3. NSF [PHY-0758099]
  4. Direct For Mathematical & Physical Scien
  5. Division Of Physics [1068217] Funding Source: National Science Foundation

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We present microscopic coupled-cluster calculations of the spectroscopic factors for proton removal from the closed-shell oxygen isotopes O-14,O- 16,O- 22,O- 24,O- 28 with a chiral nucleon-nucleon interaction at next-to-next-to-next-to-leading order. We include coupling-to-continuum degrees of freedom by using a Hartree-Fock basis built from a Woods-Saxon single-particle basis. This basis treats bound and continuum states on an equal footing. We find a significant quenching of spectroscopic factors in the neutron-rich oxygen isotopes, pointing to enhanced many-body correlations induced by strong coupling to the scattering continuum above the neutron emission thresholds.

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