Impulse approximation in the np{yields}d{pi}{sup 0} reaction reexamined

Journal Article · Sun Aug 15 04:00:00 EDT 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.82.024001· OSTI ID:21419417

Bolton, Daniel R; Miller, Gerald A ^[1]

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1. Department of Physics, University of Washington, Seattle, Washington 98195-1560 (United States)

The impulse approximation (one-body operator) in the np{yields}d{pi}{sup 0} reaction is reexamined with emphasis on the issues of reducibility and recoil corrections. An inconsistency when one-pion exchange is included in the production operator is demonstrated and then resolved via the introduction of 'wave function corrections' which nearly vanish for static nucleon propagators. Inclusion of the recoil corrections to the nucleon propagators is found to change the magnitude and sign of the impulse production amplitude, worsening agreement with the experimental cross section by {approx}30%. A cutoff is used to account for the phenomenological nature of the external wave functions and is found to have a significant impact for {Lambda} < or approx. 2.5 GeV.

• OSTI ID: 21419417
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 2 Vol. 82; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
AMPLITUDES
APPROXIMATIONS
BARYON REACTIONS
BARYON-BARYON INTERACTIONS
BARYONS
BOSONS
CALCULATION METHODS
CORRECTIONS
CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FUNCTIONS
GEV RANGE
GEV RANGE 01-10
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HADRONS
IMPULSE APPROXIMATION
INCLUSIONS
INTERACTIONS
MESONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
PARTICLE INTERACTIONS
PIONS
PIONS NEUTRAL
PROTON-NEUTRON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
PSEUDOSCALAR MESONS
PULSES
RECOILS
WAVE FUNCTIONS