Precision measurement of charge symmetry breaking in np elastic scattering at 347 MeV

Conference · Sat Jul 01 04:00:00 EDT 1995

OSTI ID:132746

Abegg, R ^[1]; Berdoz, A R; Birchall, J ^[2]

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1. TRIUMF, Vancouver, BC (Canada)
2. Univ. of Manitoba, Winnipeg, Manitoba (Canada). Dept. of Physics; and others

Charge symmetry breaking in 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 cm} {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} {+-} 0.054{degree} (stat.) {+-} 0.051{degree} (syst.). Using the experimentally determined slope of the analyzing power, dA/d{theta} = ({minus}1.35 {+-} 0.05) {times} 10{sup {minus}2} deg{sup {minus}1}, this is equivalent to {Delta}A = [59 {+-} 7(stat.) {+-} 7(syst.) {+-} 2(syst.)] {times} 10{sup {minus}4}. Predictions of nucleon-nucleon interaction models based on meson exchange agree well with this result.

• Research Organization: TRIUMF, Vancouver, BC (Canada)
• Sponsoring Organization: British Columbia Univ., Vancouver, BC (Canada). TRIUMF Facility
• OSTI ID: 132746
• Report Number(s): TRI-PP--95-52; CONF-9506108--3; ON: DE96002271
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BINDING ENERGY
BOSON-EXCHANGE MODELS
CHARGE INDEPENDENCE
D QUARKS
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ISOSPIN
MIRROR NUCLEI
NUCLEON-NUCLEON POTENTIAL
POLARIZATION-ASYMMETRY RATIO
PROTON-NEUTRON INTERACTIONS
SYMMETRY BREAKING
U QUARKS