The SAMPLE experiment: Parity-violating electron scattering from the proton and deuteron
Recent experimental evidence on nucleon structure has provided indications that some strange quark matrix elements can be comparable to those involving up and down quarks. The SAMPLE experiment will determine the strange magnetic form factor G{sup s}{sub M} at Q{sup 2}=0.1 (GeV/c){sup 2} from a measurement of the asymmetry in the scattering of polarized electrons from the proton. The error on the extraction of G{sup s}{sub M} is ultimately limited by a theoretical uncertainty-the uncertain electroweak hadronic radiative correction to the axial form factor, R{sup T = 1}{sub A}. To address this issue, the collaboration is also approved to measure the asymmetry in parity-violating quasielastic electron scattering from the deuteron. The combination of the proton and deuteron measurements will yield a value of G{sup s}{sub M} that is almost completely free of the uncertainty in R{sup T = 1}{sub A}.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 802827
- Report Number(s):
- CEBAF-PR-94-19; DOE/ER/40150-2272; TRN: US200223%%742
- Resource Relation:
- Conference: 11th International Symposium On High-Energy Spin Physics And The 8th International Symposium On Polarization Phenomena In Nuclear Physics (SPIN 94), Bloomington, IN (US), 09/15/1994--09/22/1994; Other Information: AIP Conf. Proc. 339, 63 (1995); PBD: 1 Sep 1994
- Country of Publication:
- United States
- Language:
- English
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