CLAS Physics Database

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Measurement E151M740

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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 :	0.0593 GeV²
W :	1265 GeV
ε :	0.9729
E_beam :	2.2596 GeV
ε_L:	0.3345

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
0.35	66	0.3252	1.8431	0.0424
0.45	78	-1.7472	1.2374	0.164
0.55	78	1.0749	1.528	0.1036
0.55	90	-0.1603	1.8445	0.0334
0.55	270	0.5828	1.7432	0.0616
0.65	246	1.1185	1.7071	0.1075
0.65	258	0.1943	1.3504	0.035
0.65	270	1.1781	1.206	0.1128
0.75	114	-0.5213	2.1271	0.0567
0.75	138	-1.5439	2.0055	0.1456
0.75	234	-1.8956	1.4797	0.1775
0.75	246	0.472	1.6235	0.0529
0.75	258	-0.9712	1.1795	0.0945
0.75	270	0.7331	1.2747	0.074
0.85	114	-1.7824	1.9266	0.1672
0.85	126	-3.0703	1.8868	0.2849
0.85	138	-2.1881	1.6957	0.2042
0.85	150	-1.5553	2.146	0.1466
0.85	162	-1.9091	2.2026	0.1787
0.85	234	-1.9724	1.6862	0.1845
0.85	246	-0.587	1.4876	0.0619
0.85	258	-3.3416	1.0842	0.3099
0.85	270	0.8326	2.1324	0.0825
0.95	126	3.1465	6.8142	0.2919
0.95	138	3.9873	7.1973	0.3692
0.95	174	6.4089	7.2162	0.5923
0.25	294	1.2341	0.481	0.0864
0.25	306	-0.0559	0.4367	0.0302
0.35	66	-0.504	0.4089	0.0447
0.35	78	-0.0077	0.4472	0.03
0.35	294	-0.7545	0.3466	0.0579
0.35	306	0.2086	0.4971	0.033
0.45	66	-0.0156	0.469	0.03
0.45	78	-0.1102	0.3077	0.0309
0.45	90	0.2134	0.5041	0.0331
0.55	78	0.0213	0.3183	0.03
0.55	90	-0.3027	0.3963	0.036
0.55	270	0.4915	0.4368	0.044
0.65	78	0.6034	0.5408	0.0497
0.65	90	0.1387	0.5338	0.0314
0.65	258	-0.2938	0.3694	0.0357
0.65	270	-0.0763	0.3538	0.0304
0.65	282	-0.5672	0.3685	0.0478
0.75	102	0.1142	0.4671	0.0309
0.75	114	0.1484	0.4879	0.0315
0.75	126	0.2646	0.4932	0.0347
0.75	234	-0.4547	0.4851	0.0423
0.75	246	-0.1001	0.3674	0.0307
0.75	258	-0.4625	0.302	0.0427
0.75	270	0.4509	0.3842	0.0421
0.85	102	-0.8567	0.4479	0.0637
0.85	114	0.7054	0.437	0.0552
0.85	126	-0.0601	0.4351	0.0303
0.85	138	0.7433	0.4967	0.0573
0.85	150	0.2653	0.4915	0.0347
0.85	162	0.494	0.5266	0.0442
0.85	174	0.7971	0.6205	0.0603
0.85	234	-0.0409	0.4713	0.0301
0.85	246	0.334	0.422	0.0372
0.85	258	0.0353	0.4037	0.0301
0.85	270	-0.2786	0.4469	0.0351
0.95	114	0.2078	0.9585	0.033
0.95	138	0.2344	0.896	0.0337
0.95	150	0.4747	0.9208	0.0432
0.95	162	1.4149	1.0219	0.0976
0.95	174	1.3369	1.0275	0.0927