CLAS Physics Database

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Measurement E151M274

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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 :	0.0205 GeV²
W :	1325 GeV
ε :	0.9023
E_beam :	1.3383 GeV
ε_L:	0.0812

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
0.25	30	0.7311	1.0532	0.0533
0.25	42	-0.5026	0.3913	0.0445
0.25	54	0.0744	0.3932	0.0738
0.35	30	-0.3214	0.7475	0.0357
0.35	42	0.0615	0.3724	0.0302
0.45	30	0.5983	0.8844	0.0469
0.45	42	-0.156	0.7788	0.0314
0.55	30	0.493	1.0701	0.0422
0.55	42	0.3197	1.0885	0.0356
0.55	234	0.2306	0.6592	0.0331
0.55	246	0.8406	0.7956	0.0588
0.55	258	-0.824	0.4982	0.058
0.65	126	-0.9429	0.4217	0.0642
0.65	138	1.3639	0.8171	0.0874
0.65	150	1.4514	0.9675	0.0924
0.65	210	0.4506	0.8656	0.0405
0.65	222	0.5079	0.6563	0.0428
0.65	234	0.2899	0.5928	0.0347
0.65	246	-0.656	0.3501	0.0496
0.65	258	0.1697	0.5441	0.0317
0.65	270	0.2473	0.7142	0.0335
0.75	126	-0.7313	0.5184	0.0533
0.75	138	-1.0304	0.4041	0.0689
0.75	150	-1.5405	0.2981	0.0975
0.75	162	-0.5871	0.5903	0.0464
0.75	174	-0.8072	0.6173	0.0571
0.75	210	-0.1419	0.6605	0.0312
0.75	222	0.5813	0.6432	0.0461
0.75	234	0.0625	0.4532	0.0302
0.75	246	0.3529	0.5359	0.0368
0.75	258	0.5054	0.5686	0.0427
0.75	270	-0.7212	0.4881	0.0528
0.85	126	-0.3088	0.7566	0.0353
0.85	138	-0.2	0.7574	0.0323
0.85	150	-0.1779	0.7529	0.0319
0.85	210	1.1462	0.9031	0.0753
0.85	222	-0.1751	0.4917	0.0318
0.85	234	0.2186	0.5312	0.0328
0.85	246	0.3508	0.5217	0.0367
0.85	258	-0.305	0.4004	0.0352
0.85	270	-0.5885	0.5227	0.0464
0.95	234	0.469	0.848	0.0412
0.95	246	-0.4155	0.5083	0.0391
0.35	54	-0.3699	0.5318	0.0377
0.45	30	-0.0821	0.5171	0.0304
0.45	42	-0.8605	0.4663	0.0611
0.55	138	0.5918	0.6201	0.0474
0.55	234	-0.252	0.4651	0.0338
0.55	246	-0.0082	0.4239	0.03
0.55	258	0.2928	0.4494	0.0351
0.65	126	-0.535	0.5194	0.0447
0.65	138	-0.0088	0.468	0.03
0.65	150	-0.3503	0.5068	0.037
0.65	162	-0.728	0.5089	0.0541
0.65	210	0.8624	0.5382	0.0612
0.65	222	-0.5206	0.3716	0.044
0.65	234	-0.2648	0.3538	0.0342
0.65	246	-0.0841	0.3278	0.0304
0.65	258	0.1865	0.331	0.0321
0.75	114	0.0887	0.5605	0.0305
0.75	126	-0.4999	0.3857	0.0431
0.75	138	-0.0107	0.3768	0.03
0.75	150	-0.1239	0.4688	0.031
0.75	162	-0.5146	0.3997	0.0438
0.75	198	0.3924	0.5622	0.0386
0.75	210	-0.2408	0.4889	0.0335
0.75	222	-0.1205	0.4182	0.0309
0.75	234	0.0516	0.3226	0.0302
0.75	246	0.4392	0.3032	0.0405
0.75	258	0.8142	0.3193	0.0587
0.75	270	0.1321	0.4455	0.0311
0.85	126	-0.84	0.4929	0.06
0.85	138	-0.4435	0.4912	0.0407
0.85	150	-1.1011	0.4036	0.0745
0.85	162	-0.5583	0.5006	0.0458
0.85	174	0.0375	0.572	0.0301
0.85	198	-0.091	0.5918	0.0305
0.85	210	0.3454	0.5799	0.0368
0.85	222	0.502	0.3871	0.0432
0.85	234	0.175	0.3235	0.0319
0.85	246	-0.4435	0.2846	0.0407
0.85	258	0.035	0.3207	0.0301
0.85	270	0.0394	0.4099	0.0301
0.95	234	-0.1948	0.4669	0.0323
0.95	246	0.2784	0.4745	0.0346