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Measurement E151M6

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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 : 0.0205 GeV2
W : 1205 GeV
ε : 0.9279
Ebeam : 1.0539 GeV
εL: 0.1911 

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 0.7019 0.5082 0.0853
0.55 258 -0.6589 0.4173 0.0807
0.55 270 0.2915 0.365 0.0447
0.55 282 -0.285 0.3924 0.0442
0.65 246 -0.4752 0.3415 0.0618
0.65 258 -0.7286 0.2573 0.0882
0.65 270 -0.6261 0.2801 0.0773
0.65 282 -0.3557 0.3928 0.0504
0.75 162 0.0304 0.4605 0.0302
0.75 174 -0.301 0.4052 0.0455
0.75 186 0.4645 0.3739 0.0608
0.75 198 -0.0295 0.3806 0.0302
0.75 210 0.2345 0.4033 0.0401
0.75 222 0.3551 0.4414 0.0503
0.75 234 0.1816 0.4983 0.0364
0.75 246 0.1509 0.385 0.0346
0.75 258 0.3347 0.3908 0.0485
0.85 150 -0.3146 0.4048 0.0467
0.85 162 -0.5258 0.3546 0.0669
0.85 174 -0.0619 0.3182 0.0308
0.85 186 0.4195 0.4023 0.0564
0.85 198 -0.2435 0.3415 0.0408
0.85 210 -0.0711 0.3495 0.0311
0.85 222 -0.3007 0.4216 0.0455