Precision Measurement of Charge Symmetry Breaking in {it}np{it} Elastic Scattering at 347 MeV

Journal Article · Mon Aug 28 04:00:00 EDT 1995 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.75.1711· OSTI ID:116020

Abegg, R; Berdoz, A R; Birchall, J; Campbell, J R; Davis, C A; Delheij, P P.J.; Gan, L; Green, P W; Greeniaus, L G; Healey, D C; Helmer, R; Kolb, N; Korkmaz, E; Lee, L; Levy, C D.P.; Li, J; Miller, C A; Opper, A K; Page, S A; Postma, H ; Ramsay, W D; Soukup, J; Stinson, G M; van Oers, W T.H.; Zelenski, A N; Zhao, J ^[1]

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1. TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3 (Canada)

Charge symmetry breaking in {ital np} elastic scattering at 347 MeV has been measured with high precision. From fits of the measured asymmetry curves over the angular range 53.4{degree}{le}{theta}{sub c.m.}{le}86.9{degree}, the difference in the center-of-mass zero-crossing angles of the analyzing powers was determined to be 0.438{degree}{plus_minus}0.054{degree}(stat){plus_minus}0.051{degree}(syst). Using the experimentally determined slope of the analyzing power, {ital dA}/{ital d}{theta}=({minus}1.35{plus_minus}0.05){times}10{sup {minus}2} deg{sup {minus}1}, this is equivalent to {Delta}{ital A}=[59{plus_minus}7(stat){plus_minus}7(sys){plus_minus}2(syst)]{times}10{sup {minus}4}. Predictions of nucleon-nucleon interaction models based on meson exchange agree well with this result.

• Research Organization: Carnegie Mellon University
• Sponsoring Organization: USDOE
• OSTI ID: 116020
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 9 Vol. 75; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CHARGES
ELASTIC SCATTERING
MEV RANGE 100-1000
NUCLEON-NUCLEON POTENTIAL
POLARIZATION-ASYMMETRY RATIO
PROTON-NEUTRON INTERACTIONS
SYMMETRY BREAKING