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Measurement E40M18

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Experiment: EG1, 2000

Spokespersons: P. Stoler, V. Burkert, R. Minehart

Publication:

Quantity measured: Aet, dimensionless
Double spin asymmetry Aet=(dσet/dΩ*)/(dσ0/dΩ*).
Beam: e, polarization: polarized
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π0p, polarization: none

Q2 : 0.452 — 0.77 GeV2
W : 1.15 — 1.2 GeV

Select data slice:
cos(θ) = dimensionless
Observable quantity measured (Y axis): Aet, dimensionless
Plot measurement data

Parameter (X axis): φ, degrees

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Measured data:

cos(θ),
dimensionless 		φ,
degrees 		Aet,
dimensionless 		Data errors,
dimensionless 		Systematic errors,
dimensionless
-0.9 -168 0.827 0.235 0.0514
-0.7 -168 -0.177 0.149 0.009
-0.5 -168 -0.623 0.174 0.0241
-0.3 -168 -0.63 0.174 0.0253
-0.1 -168 -0.639 0.146 0.0189
0.1 -168 -0.413 0.162 0.0168
0.3 -168 -0.906 0.18 0.0392
0.5 -168 -0.631 0.192 0.0342
0.7 -168 -0.354 0.146 0.0134
0.9 -168 -0.074 0.143 0.0032
-0.9 -144 0.188 0.163 0.008
-0.7 -144 -0.22 0.198 0.0151
-0.5 -144 -0.329 0.151 0.0134
-0.3 -144 -0.61 0.165 0.0275
-0.1 -144 -0.484 0.137 0.0191
0.1 -144 -0.812 0.133 0.029
0.3 -144 -0.461 0.111 0.0141
0.5 -144 -0.428 0.136 0.019
0.7 -144 -0.429 0.123 0.0162
0.9 -144 -0.191 0.141 0.0089
-0.9 -120 0.367 0.195 0.0231
-0.7 -120 -0.134 0.124 0.0048
-0.5 -120 -0.509 0.12 0.017
-0.3 -120 -0.497 0.105 0.0148
-0.1 -120 -0.331 0.099 0.0094
0.1 -120 -0.496 0.088 0.0129
0.3 -120 -0.276 0.085 0.0067
0.5 -120 -0.17 0.08 0.0036
0.7 -120 -0.224 0.116 0.0098
0.9 -120 0.085 0.129 0.0063
-0.9 -96 0.346 0.179 0.0226
-0.7 -96 -0.223 0.125 0.0081
-0.5 -96 -0.408 0.116 0.0145
-0.3 -96 -0.323 0.115 0.0126
-0.1 -96 -0.462 0.106 0.0164
0.1 -96 -0.341 0.092 0.0102
0.3 -96 -0.264 0.087 0.007
0.5 -96 -0.15 0.086 0.0042
0.7 -96 0.147 0.132 0.0067
0.9 -96 0.195 0.144 0.0091
-0.9 -72 -0.029 0.18 0.0036
-0.7 -72 -0.523 0.147 0.0269
-0.5 -72 -0.364 0.136 0.0174
-0.3 -72 -0.382 0.106 0.0116
-0.1 -72 -0.406 0.1 0.0122
0.1 -72 -0.137 0.098 0.0037
0.3 -72 -0.283 0.113 0.0101
0.5 -72 -0.171 0.114 0.0071
0.7 -72 0.123 0.158 0.0075
0.9 -72 0.734 0.18 0.0407
-0.9 -48 -0.093 0.167 0.0066
-0.7 -48 -0.424 0.137 0.0228
-0.5 -48 -0.626 0.159 0.0321
-0.3 -48 -0.275 0.151 0.0107
-0.1 -48 -0.198 0.202 0.0094
0.1 -48 -0.478 0.218 0.0202
0.3 -48 -0.051 0.229 0.005
0.5 -48 -0.159 0.177 0.0084
0.7 -48 0.182 0.149 0.0078
0.9 -48 0.479 0.177 0.0248
-0.9 -24 -0.179 0.178 0.0145
-0.7 -24 -0.432 0.147 0.0247
-0.5 -24 -0.398 0.235 0.0293
-0.3 -24 -0.361 0.304 0.0252
-0.1 -24 -1.317 0.76 0.1679
0.1 -24 0.117 0.768 0.0205
0.3 -24 -0.414 0.293 0.0164
0.5 -24 -0.345 0.25 0.0139
0.7 -24 0.448 0.384 0.0315
0.9 -24 0.466 0.174 0.0249
-0.9 0 -0.476 0.235 0.0594
-0.7 0 -0.56 0.25 0.0645
-0.5 0 -0.191 0.17 0.0093
-0.3 0 0.451 0.398 0.0494
-0.1 0 -0.052 0.211 0.0048
0.1 0 2.626 2.067 0.4554
0.3 0 0.288 0.335 0.0138
0.5 0 0.078 0.568 0.0135
0.7 0 0.06 0.351 0.0161
0.9 0 1.693 0.755 0.2793
-0.9 24 -0.335 0.16 0.0243
-0.7 24 -0.222 0.169 0.0156
-0.5 24 -0.702 0.286 0.0668
-0.3 24 -0.575 0.228 0.0269
-0.1 24 0.033 0.515 0.0118
0.1 24 0.287 0.289 0.0162
0.3 24 -0.432 0.474 0.0349
0.5 24 -0.233 0.244 0.0125
0.7 24 0.535 0.286 0.0295
0.9 24 0.729 0.243 0.0512
-0.9 48 -0.343 0.178 0.0253
-0.7 48 -0.326 0.123 0.0153
-0.5 48 -0.493 0.141 0.0257
-0.3 48 -0.5 0.166 0.0268
-0.1 48 -0.753 0.196 0.0391
0.1 48 -0.309 0.143 0.0077
0.3 48 -0.125 0.217 0.0083
0.5 48 0.168 0.152 0.0069
0.7 48 0.33 0.25 0.0251
0.9 48 0.5 0.193 0.0325
-0.9 72 -0.054 0.175 0.0043
-0.7 72 -0.354 0.124 0.0159
-0.5 72 -0.32 0.109 0.0126
-0.3 72 -0.542 0.107 0.0209
-0.1 72 -0.193 0.098 0.0068
0.1 72 -0.393 0.097 0.0133
0.3 72 -0.103 0.103 0.0042
0.5 72 0.015 0.106 0.0026
0.7 72 0.02 0.138 0.0032
0.9 72 0.183 0.147 0.0078
-0.9 96 0.204 0.146 0.0114
-0.7 96 -0.213 0.136 0.0105
-0.5 96 -0.321 0.101 0.0108
-0.3 96 -0.369 0.093 0.0121
-0.1 96 -0.17 0.091 0.0055
0.1 96 -0.108 0.092 0.0037
0.3 96 -0.112 0.08 0.0038
0.5 96 -0.249 0.093 0.0076
0.7 96 0.213 0.126 0.0089
0.9 96 0.372 0.135 0.0128
-0.9 120 0.446 0.195 0.0302
-0.7 120 -0.059 0.149 0.0038
-0.5 120 -0.322 0.104 0.0106
-0.3 120 -0.353 0.104 0.013
-0.1 120 -0.293 0.087 0.008
0.1 120 -0.429 0.099 0.0147
0.3 120 -0.348 0.092 0.0114
0.5 120 -0.241 0.098 0.0085
0.7 120 -0.01 0.111 0.0017
0.9 120 -0.088 0.138 0.0065
-0.9 144 0.655 0.192 0.0361
-0.7 144 -0.084 0.159 0.0055
-0.5 144 -0.221 0.157 0.011
-0.3 144 -0.368 0.124 0.0134
-0.1 144 -0.431 0.107 0.0133
0.1 144 -0.602 0.115 0.021
0.3 144 -0.651 0.128 0.0281
0.5 144 -0.427 0.12 0.0172
0.7 144 -0.192 0.111 0.0063
0.9 144 0.058 0.13 0.0048
-0.9 168 0.221 0.255 0.0152
-0.7 168 -0.167 0.198 0.0109
-0.5 168 -0.551 0.207 0.0315
-0.3 168 -0.478 0.135 0.0136
-0.1 168 -0.698 0.169 0.0291
0.1 168 -0.815 0.199 0.0425
0.3 168 -0.523 0.143 0.0186
0.5 168 -0.504 0.142 0.0166
0.7 168 -0.546 0.165 0.0243
0.9 168 0.071 0.132 0.0041