The SAMPLE experiment: Parity-violating electron scattering from the proton and deuteron

Journal Article · Sat Jul 15 00:00:00 EDT 1995 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.48594· OSTI ID:132830

Pitt, M; Arrington, J ^[1]; Beck, D ^[2]; Beise, E ^[3]; Candell, E ^[4]; Cardman, L ^[5]; Carr, R ^[1]; Dodson, G; Dow, K ^[6]; Duncan, F ^[3]; Farkhondeh, M ^[6]; Filippone, B ^[1]; Forest, T; Gao, H ^[2]; Korsch, W ^[1]; Kowalski, S ^[6]; Lung, A; McKeown, R ^[1]; Mohring, R ^[3]; Mueller, B ^[1] ; Napolitano, J ^[4]; Simicevic, N; Terburg, B ^[2]; Witkowski, M ^[4]

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1. W. K. Kellogg Radiation Laboratory, Caltech, Pasadena, California 91125 (United States)
2. Nuclear Physics Lab, University of Illinois, Champaign, Illinois 61820 (United States)
3. University of Maryland, College Park, Maryland 20742 (United States)
4. Rensselaer Polytechnic Institute, Troy, New York 12180 (United States)
5. CEBAF, Newport News, Virginia 23606 (United States)
6. MIT-Bates Linear Accelerator Center, Middleton, Massachusetts 01949 (United States)

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 {ital G}{sup {ital s}}{sub {ital M}} at {ital 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 {ital G}{sup {ital s}}{sub {ital M}} is ultimately limited by a theoretical uncertainty---the uncertain electroweak hadronic radiative correction to the axial form factor, {ital R}{sup {ital T}=1}{sub {ital 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 {ital G}{sup {ital s}}{sub {ital M}} that is almost completely free of the uncertainty in {ital R}{sup {ital T}=1}{sub {ital A}}.

• Sponsoring Organization: USDOE
• OSTI ID: 132830
• Report Number(s): CONF-9409103-; ISSN 0094-243X; TRN: 96:005122
• Journal Information: AIP Conference Proceedings, Vol. 339, Issue 1; Conference: 11. international symposia on high energy spin physics and polarization phenomena in nuclear physics, Bloomington, IN (United States), 15-22 Sep 1994; Other Information: PBD: 15 Jul 1995
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
DEUTERIUM TARGET
ELECTRON REACTIONS
ELASTIC SCATTERING
HYDROGEN 1 TARGET
PROTONS
FORM FACTORS
P INVARIANCE
POLARIZATION-ASYMMETRY RATIO
POLARIZED BEAMS