Exchange current corrections to neutrino-nucleus scattering. I. Nuclear matter

Journal Article · Fri Dec 01 04:00:00 EST 1995 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.52.3399· OSTI ID:132962

Umino, Y ^[1]; Udias, J M ^[2]

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1. Department of Physics, University of Maryland, College Park, Maryland 20742 (United States)
2. National Institute for Nuclear and High-Energy Physics, Section K (NIKHEF-K), Postbus 41882, NL-1009 DB Amsterdam (Netherlands)

Relativistic exchange current corrections to the impulse approximation in low and intermediate energy neutrino-nucleus scattering are presented assuming nonvanishing strange quark form factors for constituent nucleons. Two-body exchange current operators which treat {ital all} SU(3) vector and axial currents on an equal footing are constructed by generalizing the soft-pion dominance method of Chemtob and Rho. For charged current reactions, exchange current corrections can reduce the impulse approximation results by 5 to 10 % depending on the nuclear density. A finite strange quark form factor may change the total cross section for neutral current scattering by 20% while exchange current corrections are found to be sensitive to the nuclear density. Implications on the current LSND experiment to extract the strange quark axial form factor of the nucleon are discussed.

• Research Organization: University of Maryland
• DOE Contract Number: FG02-93ER40762
• OSTI ID: 132962
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 6 Vol. 52; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CHARGED CURRENTS
CORRECTIONS
EXCHANGE INTERACTIONS
FORM FACTORS
IMPULSE APPROXIMATION
NEUTRAL CURRENTS
NEUTRINO REACTIONS
NUCLEAR MATTER
QUARKS
STRANGE PARTICLES
SU-3 GROUPS
TOTAL CROSS SECTIONS
VECTOR CURRENTS