Measurement of the {sup 1}H({gamma},{pi}{sup 0}) cross section near threshold. II. Pion angular distributions

Journal Article · Tue Apr 01 04:00:00 EST 1997 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.55.2016· OSTI ID:543581

Bergstrom, J C; Igarashi, R; Vogt, J M ^[1]

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1. Saskatchewan Accelerator Laboratory, 107 North Road, University of Saskatchewan, Saskatoon, Saskatchewan, S7N 5C6 (CANADA)

This paper represents a continuation of our earlier report on the measurement of the reaction {sup 1}H({gamma},{pi}{sup 0}) in the threshold region (144.7{endash}169.3 MeV). More specifically, we present pion angular distributions reconstructed using information on the {pi}{sup 0}-decay photon energies not previously utilized. Analysis of these distributions reconfirms most of our previous conclusions. In particular, we confirm the rapid increase in the real part of the S-wave multipole, ReE{sub 0+}, at energies above the {pi}{sup +} threshold. New results for the P-wave amplitude P{sub 1} are presented. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 543581
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 4 Vol. 55; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANGULAR DISTRIBUTION
CROSS SECTIONS
HYDROGEN 1 TARGET
P WAVES
PHOTONUCLEAR REACTIONS
PHOTOPRODUCTION
PIONS
S WAVES