CLAS Physics Database

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Measurement E151M216

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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 :	0.0171 GeV²
W :	1235 GeV
ε :	0.9489
E_beam :	1.3383 GeV
ε_L:	0.1308

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	Data errors	Systematic errors
0.55	246	-0.518	0.4949	0.0433
0.55	258	-0.7845	0.3555	0.056
0.55	270	-0.2751	0.5142	0.0343
0.55	282	-0.9755	0.325	0.066
0.65	234	2.5845	2.5845	0.1585
0.65	246	-0.2064	0.4423	0.0325
0.65	258	0.3271	0.4823	0.0359
0.65	270	-0.7017	0.3308	0.0518
0.75	150	-0.0524	0.656	0.0302
0.75	162	-0.1354	0.6618	0.0311
0.75	186	-0.0364	0.7302	0.0301
0.75	198	0.9239	1.1173	0.0632
0.75	234	-0.3381	0.3845	0.0363
0.75	246	-0.0708	0.4445	0.0303
0.75	258	0.9071	0.6064	0.0623
0.75	270	-0.4304	0.487	0.0396
0.85	138	-0.329	0.62	0.036
0.85	150	0.123	0.741	0.0309
0.85	162	-0.0415	0.5673	0.0301
0.85	174	-0.7454	0.409	0.054
0.85	186	-0.8645	0.3579	0.0601
0.85	234	-0.3339	0.5552	0.0361
0.85	246	1.0056	0.6987	0.0676
0.85	258	-0.5843	0.4545	0.0462
0.45	270	-0.2858	0.4649	0.0348
0.55	246	-0.8294	0.3759	0.0595
0.55	258	-0.1623	0.3479	0.0316
0.55	270	-0.4579	0.3577	0.0413
0.55	282	-0.9723	0.3963	0.0673
0.65	246	-0.4429	0.3237	0.0406
0.65	258	-0.0349	0.2871	0.0301
0.65	270	-0.3793	0.3156	0.0381
0.65	282	-1.316	0.3342	0.0868
0.75	150	-0.1684	0.4505	0.0318
0.75	162	-0.1485	0.3928	0.0314
0.75	174	0.1066	0.4529	0.0307
0.75	186	-0.7031	0.4484	0.0529
0.75	198	-0.3324	0.4674	0.0364
0.75	210	-0.228	0.4755	0.0332
0.75	234	-0.2488	0.3819	0.0337
0.75	246	0.0305	0.2932	0.0301
0.75	258	-0.0664	0.2826	0.0303
0.75	270	0.0536	0.3368	0.0302
0.85	138	0.4433	0.4685	0.0407
0.85	150	-0.6494	0.449	0.0502
0.85	162	0.2363	0.3732	0.0334
0.85	174	0.0737	0.4094	0.0303
0.85	186	-0.932	0.3757	0.065
0.85	198	-0.081	0.4604	0.0304
0.85	234	-0.3152	0.4079	0.0358
0.85	246	-0.5444	0.3535	0.0451
0.85	258	-0.0595	0.4528	0.0302