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Measurement E40M21

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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 : 1.3 — 1.4 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 0.434 0.661 0.1238
-0.7 -168 0.409 0.354 0.0329
-0.5 -168 0.736 0.283 0.0268
-0.3 -168 0.391 0.384 0.0168
-0.1 -168 0.08 0.341 0.0176
0.9 -168 -0.048 0.522 0.0242
-0.9 -144 0.578 0.66 0.1514
-0.7 -144 0.568 0.302 0.0562
-0.5 -144 0.402 0.243 0.0303
-0.3 -144 0.111 0.176 0.0024
-0.1 -144 0.008 0.211 0.0164
0.1 -144 -0.085 0.218 0.0103
0.3 -144 -0.15 0.205 0.016
0.5 -144 -0.577 0.481 0.1054
0.7 -144 -0.432 0.582 0.1169
0.9 -144 0.179 0.435 0.0259
-0.9 -120 0.171 0.393 0.0237
-0.7 -120 0.267 0.186 0.0162
-0.5 -120 -0.086 0.181 0.0117
-0.3 -120 0.033 0.154 0.0051
-0.1 -120 -0.227 0.145 0.0148
0.1 -120 -0.09 0.198 0.0116
0.3 -120 -0.064 0.195 0.0087
0.5 -120 -0.368 0.273 0.0399
0.7 -120 -0.122 0.219 0.0116
0.9 -120 2.15 1.967 1.745
-0.9 -96 0.18 0.24 0.0179
-0.7 -96 -0.133 0.154 0.0131
-0.5 -96 -0.125 0.122 0.0152
-0.3 -96 0.017 0.129 0.0023
-0.1 -96 -0.103 0.108 0.0058
0.1 -96 -0.338 0.113 0.0147
0.3 -96 -0.102 0.135 0.0091
0.5 -96 0.071 0.175 0.0072
0.7 -96 -0.022 0.208 0.0088
0.9 -96 0.886 0.755 0.3816
-0.9 -72 0.066 0.412 0.0212
-0.7 -72 -0.489 0.169 0.0361
-0.5 -72 -0.245 0.136 0.0165
-0.3 -72 -0.015 0.114 0.0045
-0.1 -72 -0.433 0.108 0.0199
0.1 -72 -0.014 0.111 0.0065
0.3 -72 -0.305 0.133 0.0168
0.5 -72 0.176 0.188 0.0179
0.7 -72 -0.223 0.261 0.0255
-0.9 -48 -0.406 0.387 0.0874
-0.7 -48 -0.47 0.224 0.0509
-0.5 -48 -0.702 0.183 0.0512
-0.3 -48 -0.465 0.129 0.0236
-0.1 -48 -0.568 0.161 0.0362
0.1 -48 -0.243 0.14 0.0196
0.3 -48 -0.305 0.192 0.0154
0.5 -48 -0.231 0.247 0.0145
0.7 -48 0.005 0.229 0.0081
0.9 -48 2.227 2.163 2.354
-0.9 -24 -0.444 0.355 0.0813
-0.7 -24 -0.457 0.249 0.0577
-0.5 -24 -0.6 0.243 0.0696
-0.3 -24 -0.641 0.174 0.0364
-0.1 -24 -0.611 0.177 0.0221
0.9 -24 0.028 0.261 0.0239
-0.9 0 0.465 1.169 0.6898
-0.7 0 -0.804 0.488 0.2329
-0.5 0 -0.411 0.167 0.0345
-0.3 0 -0.047 0.116 0.0057
-0.1 0 -0.152 0.156 0.0063
0.9 0 1.395 1.03 0.5553
-0.9 24 0.845 1.485 1.6368
-0.7 24 -0.265 0.241 0.0386
-0.5 24 -0.864 0.292 0.1204
-0.3 24 -0.692 0.157 0.0351
-0.1 24 -0.421 0.199 0.021
0.9 24 -0.108 0.425 0.0348
-0.9 48 -0.083 0.361 0.0287
-0.7 48 -0.177 0.184 0.0217
-0.5 48 -0.254 0.121 0.0148
-0.3 48 -0.463 0.15 0.0326
-0.1 48 -0.566 0.129 0.0263
0.1 48 -0.401 0.139 0.0167
0.3 48 -0.426 0.158 0.0175
0.5 48 -0.141 0.224 0.0071
0.7 48 -0.049 0.245 0.0084
-0.9 72 0.041 0.249 0.0169
-0.7 72 0.074 0.162 0.0096
-0.5 72 -0.085 0.115 0.007
-0.3 72 -0.229 0.119 0.0136
-0.1 72 -0.219 0.099 0.0109
0.1 72 -0.448 0.119 0.0228
0.3 72 -0.266 0.128 0.0147
0.5 72 -0.054 0.14 0.0068
0.7 72 -0.502 0.213 0.0466
0.9 72 0.629 0.99 0.5198
-0.9 96 0.861 0.546 0.2278
-0.7 96 0.22 0.155 0.016
-0.5 96 0.007 0.13 0.006
-0.3 96 -0.352 0.127 0.0204
-0.1 96 -0.191 0.123 0.0101
0.1 96 -0.117 0.115 0.0112
0.3 96 -0.181 0.144 0.0129
0.5 96 -0.282 0.142 0.0158
0.7 96 -0.128 0.213 0.0159
0.9 96 -0.174 0.339 0.0429
-0.9 120 0.031 0.278 0.0147
-0.7 120 0.164 0.207 0.0137
-0.5 120 -0.07 0.208 0.0129
-0.3 120 0.073 0.188 0.0145
-0.1 120 0.083 0.183 0.0092
0.1 120 0.09 0.211 0.0117
0.3 120 -0.375 0.174 0.0222
0.5 120 -0.216 0.218 0.0191
0.7 120 -0.235 0.227 0.022
0.9 120 0.245 0.464 0.0364
-0.9 144 0.649 0.388 0.102
-0.7 144 0.314 0.274 0.0373
-0.5 144 0.384 0.188 0.0218
-0.3 144 -0.001 0.204 0.0045
-0.1 144 -0.078 0.235 0.0101
0.1 144 -0.213 0.21 0.0151
0.3 144 -0.402 0.34 0.0479
0.5 144 -0.102 0.284 0.0198
0.7 144 -0.756 0.735 0.2267
0.9 144 -0.245 1.464 0.0784
-0.9 168 -0.462 0.643 0.0594
-0.7 168 2.226 1.762 0.8312
-0.5 168 1.216 0.565 0.1537
-0.3 168 0.042 0.344 0.0102
-0.1 168 -0.107 0.325 0.0124
0.9 168 1.056 1.019 0.2701