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Measurement E151M16

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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 : 0.1205 GeV2
W : 1205 GeV
ε : 0.8436
Ebeam : 1.0539 GeV
εL: 0.7473 

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

Parameter (X axis): φ(π+), degrees

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Measured data:

cos(θπ+) φ(π+),
degrees 		AUL Data errors Systematic errors
0.35 282 -0.1923 0.4787 0.0371
0.45 282 0.0465 0.4391 0.0305
0.45 294 -0.1862 0.4798 0.0367
0.55 270 0.0452 0.4414 0.0304
0.55 282 0.1208 0.4128 0.033
0.55 294 -0.1023 0.4617 0.0322
0.65 270 -0.3585 0.4064 0.0506
0.65 282 0.0712 0.4078 0.0311
0.65 294 -0.1744 0.4648 0.036
0.75 270 0.6033 0.4674 0.0749
0.75 282 -0.4824 0.3527 0.0625
0.85 138 -0.3089 0.4705 0.0462
0.95 126 -0.2022 0.4073 0.0378
0.95 138 -0.0259 0.3838 0.0301
0.95 150 -0.2241 0.35 0.0394
0.95 162 -0.072 0.3212 0.0311
0.95 174 0.0863 0.3375 0.0316
0.95 186 1.001 0.355 0.1178
0.95 198 0.3472 0.4364 0.0496
0.95 210 0.1484 0.3907 0.0344
0.95 222 0.2205 0.4317 0.0391