CLAS Physics Database

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Measurement E151M493

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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: A_UL,
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 :	1265 GeV
ε :	0.9498
E_beam :	1.9889 GeV
ε_L:	0.5708

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_UL,
Plot measurement data

Parameter (X axis): φ(π⁺), degrees

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

Measured data:

cos(θ_π⁺)	φ(π⁺), degrees	A_UL	Stat. error	Syst. error
0.25	66	0.7115	0.4549	0.0529
0.25	78	-0.5145	0.5283	0.0435
0.35	66	-0.2907	0.3608	0.0349
0.35	78	0.0359	0.4954	0.0301
0.45	66	-0.0004	0.4428	0.03
0.45	78	-0.5905	0.3549	0.047
0.45	282	-0.2679	0.5362	0.0342
0.45	294	-0.3558	0.5508	0.0371
0.55	66	0.3509	0.5945	0.0369
0.55	78	0.698	0.4586	0.0522
0.55	270	0.4825	0.4735	0.0421
0.55	282	-0.1078	0.3897	0.0307
0.55	294	-0.0284	0.5588	0.0301
0.65	258	0.0413	0.4037	0.0301
0.65	270	-0.048	0.3221	0.0301
0.65	282	0.5151	0.4681	0.0435
0.75	90	-0.7841	0.4785	0.0566
0.75	102	-0.2365	0.4331	0.0333
0.75	114	1.008	0.4613	0.0686
0.75	126	0.1513	0.5659	0.0314
0.75	246	0.2	0.4713	0.0324
0.75	258	-0.0672	0.4091	0.0303
0.75	270	0.1411	0.3589	0.0312
0.75	282	0.5028	0.3875	0.043
0.85	90	-1.1227	0.3244	0.0749
0.85	102	0.69	0.3556	0.0518
0.85	114	0.5014	0.3712	0.0429
0.85	126	-0.1876	0.3262	0.0321
0.85	138	0.0413	0.3997	0.0301
0.85	234	-0.0363	0.5506	0.0301
0.85	246	-0.7176	0.3629	0.0532
0.85	258	0.394	0.3686	0.0385
0.85	270	-0.1152	0.3031	0.0308
0.85	282	0.0424	0.359	0.0301
0.95	90	-0.1038	0.4127	0.0307
0.95	102	-0.0439	0.363	0.0301
0.95	114	0.3196	0.3478	0.0358
0.95	126	0.4663	0.3691	0.0414
0.95	138	-0.0248	0.3942	0.03
0.95	150	0.1772	0.44	0.0319
0.95	162	0.0645	0.4111	0.0303
0.95	174	-0.4413	0.3678	0.0404
0.95	186	-0.5334	0.4617	0.0443
0.95	234	-0.2309	0.4649	0.0332
0.95	246	0.268	0.504	0.0342
0.95	258	0.1745	0.5115	0.0318
0.95	270	0.0078	0.4526	0.03