Abstract
The LSND (Liquid Scintillator Neutrino Detector) experiment will be performed at LAMPF in the next several years. The main goal of the experiment is to search for v µ - v e oscillations with high sensitivity; however, an increasingly important byproduct of this search is to measure vp → vp elastic scattering and determine the strange quark contribution, Δs, to the spin of the proton. With the 800-MeV proton energy of LAMPF, neutrinos are produced from pion decay-in-flight with an average energy of about 150 MeV. This energy is sufficiently high so that the vp → vp cross section is large and is sufficiently low so that the low Q 2 approximation (Q 2 ≪ \(m_p^2\) is valid and the cross section can be expressed in a simple form dependent upon Δs as the only unknown. LAMPF with its 1-mA proton intensity is, therefore, an ideal accelerator to perform this measurement.
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References
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Louis, W.C. (1991). Measuring the Quark Contribution to the Proton Spin through vp → vp . In: Wissink, S.W., Goodman, C.D., Walker, G.E. (eds) Spin and Isospin in Nuclear Interactions. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-3834-9_30
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DOI: https://doi.org/10.1007/978-1-4615-3834-9_30
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