CLAS Physics Database

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Measurement E151M1138

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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 :	0.1435 GeV²
W :	1715 GeV
ε :	0.8771
E_beam :	2.999 GeV
ε_L:	0.0912

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
0.15	54	-0.4918	0.7849	0.0468
0.15	282	-0.7479	0.744	0.0624
0.25	66	-0.3091	0.7476	0.0376
0.25	270	0.5674	0.9367	0.0512
0.35	258	-0.1284	0.7897	0.0314
0.35	270	-0.2444	0.7218	0.0349
0.35	282	-0.2735	0.6905	0.036
0.35	294	1.1325	0.9512	0.088
0.45	114	0.0026	0.7603	0.03
0.45	126	-1.7201	0.4791	0.1293
0.45	138	-0.6753	0.8366	0.0578
0.45	258	-0.5903	0.7356	0.0525
0.45	270	0.1515	0.7785	0.032
0.45	282	0.569	0.6277	0.0513
0.55	66	-1.1751	0.5744	0.091
0.55	90	0.7434	0.9676	0.0621
0.55	102	-0.5423	0.7106	0.0497
0.55	114	-0.7991	0.5466	0.0657
0.55	126	-0.7445	0.6352	0.0621
0.55	138	-0.2359	0.7489	0.0346
0.55	186	1.5141	0.999	0.1147
0.55	198	1.4442	0.9158	0.1097
0.55	210	0.9578	0.8784	0.0762
0.55	222	2.5489	1.0063	0.1887
0.55	258	-0.2445	0.7753	0.0349
0.55	270	-1.0452	0.5724	0.0821
0.55	294	0.1435	0.7708	0.0318
0.65	54	-0.2964	0.6186	0.037
0.65	66	-0.7785	0.6679	0.0643
0.65	78	-0.1612	0.8928	0.0322
0.65	102	-1.342	0.575	0.1026
0.65	114	-0.1115	0.5814	0.0311
0.65	126	-1.0738	0.4959	0.084
0.65	138	0.2597	0.8338	0.0355
0.65	186	-0.078	0.7192	0.0305
0.65	198	0.5972	0.742	0.053
0.65	210	1.4376	0.6964	0.1093
0.65	222	0.7512	0.7083	0.0626
0.65	234	1.2852	0.8239	0.0986
0.65	258	0.289	0.8677	0.0367
0.65	282	-0.6656	0.529	0.0572
0.65	294	0.5909	0.657	0.0526
0.75	90	0.0082	0.7186	0.03
0.75	102	-1.0872	0.6207	0.0849
0.75	114	1.6227	0.8709	0.1223
0.75	126	-0.9893	0.5008	0.0783
0.75	138	-1.3367	0.6585	0.1022
0.75	174	-0.613	0.7413	0.0539
0.75	186	0.7295	0.8069	0.0612
0.75	198	-0.0769	0.5983	0.0305
0.75	210	0.5222	0.6069	0.0485
0.75	222	2.0073	0.6096	0.1497
0.75	234	0.2553	0.6075	0.0353
0.75	246	-0.1039	0.7848	0.0309
0.75	270	-0.1298	0.5412	0.0315
0.75	282	0.3599	0.6242	0.0399
0.75	294	1.3696	0.7041	0.1045
0.85	78	-0.2413	0.5421	0.0348
0.85	90	0.3015	0.5151	0.0372
0.85	102	-0.7793	0.3875	0.0644
0.85	114	-1.1487	0.4346	0.0892
0.85	126	0.8251	0.9806	0.0674
0.85	174	-1.3366	0.5693	0.1022
0.85	186	0.1165	0.5932	0.0312
0.85	198	-0.1744	0.5289	0.0326
0.85	210	2.2039	0.5074	0.1639
0.85	222	0.1376	0.4832	0.0316
0.85	234	0.8906	0.4807	0.0717
0.85	246	1.2359	0.6397	0.0952
0.85	258	0.5047	0.7404	0.0475
0.85	270	-0.4297	0.7593	0.0434
0.85	282	1.3178	0.8168	0.1009
0.95	90	1.3893	0.9723	0.1059
0.95	102	-0.4327	0.6636	0.0436
0.95	114	-0.9341	0.6393	0.0746
0.95	126	1.1029	1.0383	0.086
0.95	162	1.506	1.0025	0.1141
0.95	174	-1.0841	0.6804	0.0847
0.95	186	-0.3415	0.6077	0.039
0.95	198	0.5775	0.675	0.0518
0.95	210	-0.1951	0.5312	0.0332
0.95	222	0.686	0.6196	0.0584
0.95	234	0.2785	0.5272	0.0363
0.95	246	0.1385	0.5389	0.0317
0.95	258	0.1039	0.7377	0.0309