Determination of pion intranuclear rescattering rates in. nu. sub. mu. -Ne versus. nu. sub. mu. -D interactions for the atmospheric. nu. flux

Journal Article · Sat Feb 01 04:00:00 EST 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.45.743· OSTI ID:7277712

Merenyi, R; Mann, W A; Kafka, T; Leeson, W; Saitta, B; Schneps, J ^[1]; Derrick, M; Musgrave, B ^[2]

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1. Tufts University, Medford, Massachusetts 02155 (United States)
2. Argonne National Laboratory, Argonne, Illinois 60439 (United States)

Intranuclear rescattering rates are determined for low energy pions created within neon nuclei by muon neutrinos with energies between 0.4 and 6.0 GeV. Specifically, charged current {nu}{sub {mu}}-neon and {nu}{sub {mu}}-deuteron interactions from two accelerator bubble chamber experiments are {ital E}{sub {nu}} weighted to match the shape of the atmospheric neutrino spectrum. The relative populations of final states within the weighted event samples imply rates for pion absorption and pion charge exchange, which expressed as probabilities per final state pion, are 0.22{plus minus}0.05 and 0.10{plus minus}0.08, respectively. Inclusive {pi}{sup {plus minus}} momenta and production angle distributions from neon are found to be similar to those from deuteron targets; sizable kinematic distortions attributable to inelastic rescattering are absent. However, the fraction of {pi}{sup +} ({pi}{sup {minus}}) momenta in neon which are less than 300 MeV/{ital c} and backward in the laboratory system slightly exceeds the deuteron fraction, by 0.03{plus minus}0.04 (0.11{plus minus}0.10). Our measurements indicate the extent to which pion intranuclear rescattering may distort final states resulting from atmospheric neutrino reactions or from nucleon decays in nuclei having mass number near {ital A}=20.

• DOE Contract Number: AC02-83ER40085
• OSTI ID: 7277712
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 45:3; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662320* -- Neutrino Interactions-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
BASIC INTERACTIONS
BOSONS
BUBBLE CHAMBERS
CHARGE-EXCHANGE INTERACTIONS
CHARGED-CURRENT INTERACTIONS
DEUTERIUM
DISTRIBUTION
ELASTIC SCATTERING
ELEMENTARY PARTICLES
ELEMENTS
FLUIDS
GAS TRACK DETECTORS
GASES
HADRONS
HYDROGEN ISOTOPES
INELASTIC SCATTERING
INTERACTIONS
ISOTOPES
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LIGHT NUCLEI
MEASURING INSTRUMENTS
MESONS
NEON
NEUTRINO-NUCLEON INTERACTIONS
NONMETALS
NUCLEI
ODD-ODD NUCLEI
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PIONS
PSEUDOSCALAR MESONS
RADIATION DETECTORS
RARE GASES
RESCATTERING
SCATTERING
STABLE ISOTOPES
STRONG INTERACTIONS