CLAS Physics Database

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Measurement E151M236

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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 :	1265 GeV
ε :	0.9346
E_beam :	1.3383 GeV
ε_L:	0.1231

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	42	-0.4389	0.5348	0.04
0.25	54	0.0575	0.6342	0.0302
0.35	42	-0.929	0.3816	0.0635
0.35	54	-0.6625	0.5309	0.0499
0.45	30	-0.6678	0.5064	0.0502
0.45	42	0.7848	0.9325	0.056
0.45	258	0.1349	0.7478	0.0311
0.45	270	0.2127	0.8914	0.0326
0.55	234	-0.6132	0.529	0.0476
0.55	246	0.5116	0.7312	0.043
0.55	258	-0.1439	0.3988	0.0312
0.55	270	1.0891	0.6357	0.0721
0.65	138	2.0727	2.0727	0.1284
0.65	150	1.2133	0.8817	0.079
0.65	234	-0.7416	0.3577	0.0538
0.65	246	0.5418	0.4744	0.0443
0.65	258	0.5395	0.5067	0.0442
0.65	270	0.3447	0.4908	0.0365
0.75	126	-1.1477	0.377	0.0753
0.75	138	-0.3066	0.519	0.0352
0.75	150	-0.1045	0.5237	0.0307
0.75	162	-0.4703	0.4641	0.0413
0.75	174	-0.0133	0.6838	0.03
0.75	186	1.0675	0.8751	0.0709
0.75	210	0.0735	0.5923	0.0303
0.75	222	-0.5296	0.3783	0.0438
0.75	234	0.5996	0.509	0.0469
0.75	246	0.1148	0.4203	0.0308
0.75	258	-0.074	0.3464	0.0303
0.75	270	0.2203	0.5153	0.0328
0.75	282	-0.5369	0.515	0.0441
0.85	126	2.9383	2.9383	0.1795
0.85	138	-0.9444	0.4013	0.0643
0.85	150	1.0667	0.8587	0.0709
0.85	162	-0.3917	0.4306	0.0382
0.85	174	-0.0758	0.5428	0.0303
0.85	186	0.6442	0.7399	0.049
0.85	210	-0.3748	0.5102	0.0375
0.85	222	-0.2035	0.5519	0.0324
0.85	234	-0.0462	0.4356	0.0301
0.85	246	-0.1656	0.3353	0.0316
0.85	258	0.0213	0.404	0.03
0.85	270	-0.6352	0.3767	0.0486
0.15	42	0.107	0.4874	0.0307
0.25	42	0.1529	0.3953	0.0315
0.25	54	-0.2036	0.5287	0.0325
0.35	42	-0.0147	0.552	0.03
0.35	54	-0.2313	0.4225	0.0332
0.45	30	-0.1957	0.4877	0.0324
0.45	42	0.8489	0.5113	0.0605
0.45	270	-1.0756	0.3836	0.073
0.55	234	0.4877	0.5289	0.0426
0.55	246	-0.1954	0.4076	0.0323
0.55	258	0.1367	0.317	0.0312
0.55	270	0.1454	0.3571	0.0313
0.65	126	-0.6256	0.525	0.049
0.65	150	-0.3762	0.5079	0.038
0.65	222	-0.0656	0.3952	0.0303
0.65	234	0.2818	0.3427	0.0347
0.65	246	0.2786	0.2727	0.0346
0.65	258	-0.4579	0.2702	0.0413
0.65	270	-0.0517	0.2671	0.0302
0.75	126	-0.9758	0.3439	0.0675
0.75	138	0.2788	0.3692	0.0346
0.75	150	-0.0393	0.3751	0.0301
0.75	162	0.1502	0.3851	0.0314
0.75	174	1.0776	0.4955	0.0732
0.75	186	-0.4906	0.4553	0.0427
0.75	210	0.2792	0.517	0.0346
0.75	222	-0.0543	0.3984	0.0302
0.75	234	0.1576	0.3148	0.0315
0.75	246	0.0531	0.2515	0.0302
0.75	258	0.2704	0.2695	0.0344
0.75	270	-0.2822	0.2768	0.0347
0.75	282	-0.0794	0.442	0.0304
0.85	126	0.1751	0.4784	0.0319
0.85	138	0.8383	0.4123	0.06
0.85	150	0.3643	0.3855	0.0375
0.85	162	-0.0784	0.3539	0.0304
0.85	174	-0.5578	0.4824	0.0457
0.85	186	-0.0989	0.5022	0.0306
0.85	210	0.3558	0.4622	0.0372
0.85	222	0.1019	0.3731	0.0307
0.85	234	-0.1472	0.362	0.0314
0.85	246	-0.3957	0.2599	0.0387
0.85	258	0.0295	0.2768	0.0301
0.85	270	0.5623	0.3698	0.046