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Measurement E151M540

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Experiment: EG4, 2016

Spokespersons: Xiaochao Zheng

Experiment comment: Final asymmetry results for the ep-> e pi+ (n) channel extracted from CLAS/EG4 data obtained using a longitudinally polarized beam and a longitudinally polarized NH3 target (CAA HS07-02).

No publications available for this experiment

Quantity measured: AUL,
Target spin asymmetry.
Beam: e, polarization: longitudinal
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π+n, polarization: none

Q2 : 0.1715 GeV2
W : 1355 GeV
ε : 0.9108
Ebeam : 1.9889 GeV
εL: 0.433 

Select data slice:
cos(θπ+) =
Observable quantity measured (Y axis): AUL,
Plot measurement data

Parameter (X axis): φ(π+), degrees

Click here to get data in text file, delimited with tabs.

Measured data:

cos(θπ+) φ(π+),
degrees 		AUL Data errors Systematic errors
0.15 66 0.9023 0.6889 0.0628
0.15 306 -0.4651 0.6089 0.0413
0.25 66 0.8085 0.5965 0.0578
0.25 78 2.4498 2.4498 0.1528
0.25 306 -0.1898 0.6009 0.0322
0.35 66 0.8892 0.6848 0.0621
0.35 282 0.4239 0.7161 0.0397
0.35 294 0.1376 0.5232 0.0312
0.45 66 0.8671 0.7499 0.0609
0.45 78 0.0345 0.5574 0.0301
0.55 78 -0.6421 0.6215 0.0494
0.55 258 0.1255 0.623 0.031
0.55 294 0.1623 0.679 0.0316
0.65 90 0.1713 0.6107 0.0318
0.65 102 0.3899 0.5665 0.0383
0.65 114 0.3263 0.5472 0.036
0.65 246 -0.0411 0.5718 0.0301
0.65 258 -0.0042 0.5137 0.03
0.65 270 -0.3045 0.4242 0.0353
0.65 282 0.81 0.7145 0.0579
0.75 78 0.3174 0.6865 0.0357
0.75 90 0.2484 0.4344 0.0336
0.75 102 -0.1153 0.3971 0.0308
0.75 114 0.0144 0.5577 0.03
0.75 126 -0.2877 0.4874 0.0348
0.75 138 -0.6105 0.5991 0.0479
0.75 222 0.2154 0.6292 0.0328
0.75 234 -0.6163 0.4419 0.0482
0.75 246 -0.55 0.468 0.0451
0.75 258 0.4695 0.434 0.0415
0.75 270 0.8382 0.4185 0.0594
0.75 282 -0.3047 0.4835 0.0353
0.85 90 -0.0473 0.4808 0.0301
0.85 102 -0.0225 0.403 0.03
0.85 114 0.0741 0.4344 0.0303
0.85 126 -0.1112 0.4104 0.0308
0.85 138 0.1906 0.5364 0.0322
0.85 150 1.275 0.7489 0.0836
0.85 210 0.8373 0.7252 0.0594
0.85 222 0.1139 0.4969 0.0308
0.85 234 0.9573 0.4569 0.0658
0.85 246 -0.0294 0.3938 0.0301
0.85 258 -0.5002 0.3329 0.0428
0.85 270 -0.1314 0.4224 0.0311
0.85 282 -0.4327 0.3384 0.04
0.85 294 0.6447 0.5579 0.0495
0.95 66 0.7147 0.6732 0.053
0.95 102 0.5529 0.5844 0.0452
0.95 114 -0.0188 0.5143 0.03
0.95 126 -0.3549 0.4733 0.037
0.95 138 0.2037 0.5364 0.0325
0.95 162 -0.1272 0.5768 0.031
0.95 222 0.0944 0.5343 0.0306
0.95 234 0.0738 0.4988 0.0303
0.95 246 0.3171 0.4522 0.0357
0.95 258 -0.2901 0.3309 0.0349
0.95 270 1.2452 0.4177 0.0819
0.95 282 0.4137 0.4161 0.0392
0.95 294 -0.356 0.4251 0.0371