The E2/M1 ratio in {Delta} photoproduction

Conference · Wed Oct 01 04:00:00 EDT 1997

OSTI ID:537383

Hoblit, S ^[1]; Blanpied, G ^[2]; Blecher, M ^[3]

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1. Brookhaven National Lab., Upton, NY (United States). Physics Dept.
2. Univ. of South Carolina, Columbia, SC (United States). Dept. of Physics
3. Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States). Physics Dept.; and others

New high-precision measurements of p({rvec {gamma}}, {pi}) and p({rvec {gamma}}, {gamma}) cross sections and beam asymmetries have been combined with other polarization ratios in a simultaneous analysis of both reactions. The E2/M1 mixing ratio for the n {r_arrow} {Delta} transition extracted from this analysis is EMR = {minus}3.0% {+-} 0.3 (stat+sys) {+-} 0.2 (model).

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States); Istituto Nazionale di Fisica Nucleare, Rome (Italy); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 537383
• Report Number(s): BNL--64650; CONF-970564--; ON: DE98000313
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
E2-TRANSITIONS
GAMMA RADIATION
M1-TRANSITIONS
N*BARYONS
PARTICLE STRUCTURE
PHOTONUCLEAR REACTIONS
PHOTOPRODUCTION
PIONS
POLARIZED BEAMS