CLAS Physics Database

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Measurement E151M300

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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 :	0.0707 GeV²
W :	1355 GeV
ε :	0.8492
E_beam :	1.3383 GeV
ε_L:	0.2008

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	258	0.5257	0.4744	0.0465
0.65	126	0.0085	0.6447	0.03
0.65	138	-0.1114	0.5625	0.0308
0.65	150	-0.2327	0.6328	0.0333
0.65	222	0.1457	0.6263	0.0313
0.65	234	0.8239	0.5012	0.0592
0.65	246	-0.0424	0.412	0.0301
0.65	258	-0.1452	0.4161	0.0313
0.65	270	-0.4672	0.489	0.0417
0.75	114	0.6482	0.5566	0.0501
0.75	126	-0.183	0.4173	0.0321
0.75	138	-0.3203	0.4622	0.036
0.75	150	-0.7077	0.5559	0.0531
0.75	162	-0.8333	0.6076	0.0597
0.75	222	-0.5775	0.5333	0.0467
0.75	234	0.3122	0.4099	0.0357
0.75	246	-0.0583	0.5049	0.0302
0.75	258	-0.4418	0.4296	0.0406
0.75	270	-0.5177	0.4191	0.0439
0.75	282	0.2195	0.5989	0.0329
0.85	114	-0.5569	0.5389	0.0457
0.85	126	-0.6308	0.463	0.0493
0.85	138	0.0217	0.4382	0.03
0.85	150	-0.0546	0.5487	0.0302
0.85	162	-0.2078	0.5317	0.0326
0.85	222	1.6924	0.4863	0.109
0.85	234	0.3131	0.4661	0.0357
0.85	246	-0.3453	0.382	0.0368
0.85	258	0.0173	0.4507	0.03
0.85	270	0.8467	0.4856	0.0604
0.85	282	-0.1498	0.5333	0.0314
0.95	90	-0.1781	0.4438	0.032
0.95	102	-0.7775	0.4424	0.0567
0.95	114	-0.1072	0.4716	0.0307
0.95	126	0.0453	0.5326	0.0301
0.95	222	1.0256	0.5112	0.0702
0.95	234	-0.0323	0.4088	0.0301
0.95	246	-0.0449	0.397	0.0301
0.95	258	-0.3871	0.482	0.0384
0.95	270	0.0939	0.4106	0.0306
0.95	282	0.0639	0.4548	0.0303
0.55	270	-1.4038	0.392	0.0897
0.65	114	-1.2877	0.5363	0.0831
0.65	126	-0.9868	0.5267	0.0666
0.65	138	-0.5506	0.8172	0.0447
0.65	234	-0.2149	0.5812	0.0327
0.65	246	1.4801	0.911	0.094
0.65	258	-0.5025	0.5453	0.0426
0.65	270	-1.0465	0.4272	0.0698
0.75	114	-0.5796	0.665	0.046
0.75	126	-0.1063	0.7609	0.0307
0.75	138	-0.7871	0.5476	0.0561
0.75	150	0.4346	0.9843	0.0398
0.75	222	-0.127	0.6316	0.031
0.75	234	0.2227	0.6905	0.0329
0.75	246	-1.0001	0.4254	0.0673
0.75	258	-0.6297	0.443	0.0484
0.75	270	-0.413	0.5376	0.039
0.75	282	-1.2559	0.4885	0.0814
0.85	114	0.888	1.1347	0.0613
0.85	126	-0.1302	0.6254	0.031
0.85	138	-1.2596	0.396	0.0816
0.85	150	-0.1211	0.8136	0.0309
0.85	162	0.067	0.7317	0.0303
0.85	222	-1.2517	0.3792	0.0811
0.85	234	-0.001	0.6645	0.03
0.85	246	0.7295	0.7172	0.0532
0.85	258	0.0484	0.6054	0.0301
0.85	270	0.0205	0.4845	0.03
0.85	282	-0.307	0.6546	0.0352
0.95	90	-0.7428	0.6356	0.0539
0.95	102	-0.0188	0.6455	0.03
0.95	114	0.3155	0.7284	0.0355
0.95	150	0.9108	0.9566	0.0625
0.95	234	0.3358	0.7542	0.0362
0.95	246	0.7076	0.873	0.0521
0.95	258	-0.1581	0.5128	0.0315
0.95	270	0.3011	0.6331	0.0351