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Measurement E151M142

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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 : 1385 GeV
ε : 0.6317
Ebeam : 1.0539 GeV
εL: 0.1998 

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
0.55 246 -0.4381 0.7565 0.0582
0.55 258 -0.1539 0.7196 0.0347
0.65 234 -0.532 0.7172 0.0676
0.65 246 -0.56 0.6487 0.0704
0.65 258 0.1178 0.6905 0.0329
0.65 270 -0.6027 0.6699 0.0748
0.75 138 0.9262 0.9048 0.1096
0.75 174 -0.4688 0.8007 0.0612
0.75 222 -0.9458 0.7529 0.1117
0.75 246 -0.9748 0.5375 0.1149
0.75 258 0.0493 0.7441 0.0305
0.75 270 -0.908 0.5385 0.1076
0.75 282 -0.57 0.7257 0.0714
0.85 138 0.2403 0.9115 0.0406
0.85 234 -0.2353 0.7757 0.0402
0.85 246 0.0914 0.6817 0.0318
0.85 258 -0.5533 0.5197 0.0697
0.85 270 0.0562 0.5243 0.0307
0.85 282 1.0835 0.7413 0.1269
0.95 258 -0.4218 0.6005 0.0566