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Title: Quark-hadron duality constraints on $$\gamma Z$$ box corrections to parity-violating elastic scattering

We examine the interference \gamma Z box corrections to parity-violating elastic electron--proton scattering in the light of the recent observation of quark-hadron duality in parity-violating deep-inelastic scattering from the deuteron, and the approximate isospin independence of duality in the electromagnetic nucleon structure functions down to Q 2 \approx 1 GeV 2. Assuming that a similar behavior also holds for the \gamma Z proton structure functions, we find that duality constrains the γ Z box correction to the proton's weak charge to be Re V γ Z V = (5.4 \pm 0.4) \times 10 -3 at the kinematics of the Q weak experiment. Within the same model we also provide estimates of the γ Z corrections for future parity-violating experiments, such as MOLLER at Jefferson Lab and MESA at Mainz.
 [1] ;  [1] ;  [2] ;  [3] ;  [3]
  1. Univ. of Manitoba, Winnipeg (Canada)
  2. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  3. Univ. of Adelaide (Australia)
Publication Date:
OSTI Identifier:
Report Number(s):
JLAB-THY-15-2029; DOE/OR/23177-3334; arXiv:1504.03973
Journal ID: ISSN 0370-2693; TRN: US1601081
Grant/Contract Number:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 753; Journal ID: ISSN 0370-2693
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; parity violation; proton weak charge; quark-hadron duality