CLAS Physics Database

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Measurement E151M1552

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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_LL,

Beam: e, polarization: longitudinal
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π⁺n, polarization: none

Q² :	0.0143 GeV²
W :	1415 GeV
ε :	0.8369
E_beam :	1.3383 GeV
ε_L:	0.0328

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_LL,
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_LL	Stat. error	Syst. error
0.55	42	-0.1043	0.8106	0.0306
0.55	126	0.0685	0.8052	0.0303
0.55	138	-0.3866	0.936	0.0379
0.55	222	0.0013	0.8521	0.03
0.55	234	-0.5768	0.7286	0.0458
0.55	246	0.2849	0.7213	0.0345
0.65	126	0.3108	0.7653	0.0353
0.65	138	-1.6341	0.6525	0.1024
0.65	210	0.0346	0.7157	0.0301
0.65	222	-0.02	0.6155	0.03
0.65	234	-0.4839	0.6236	0.0417
0.65	246	0.728	0.716	0.053
0.75	126	0.2493	0.8353	0.0335
0.75	138	-0.6191	0.7867	0.0477
0.75	150	-0.4779	0.8153	0.0415
0.75	222	0.5423	0.6589	0.0442
0.75	234	0.4998	0.607	0.0424
0.75	246	0.5069	0.6976	0.0427
0.85	126	1.2319	0.8233	0.0797
0.85	138	-0.2094	0.7068	0.0325
0.85	222	0.6791	0.6548	0.0506
0.85	234	-1.6509	0.602	0.1034
0.85	246	-0.2551	0.7305	0.0337
0.45	42	-1.2001	0.8876	0.076
0.45	54	0.599	1.2702	0.046
0.55	30	-1.2242	1.1088	0.0772
0.55	138	1.0169	1.0915	0.0663
0.55	222	-0.6706	0.8003	0.0492
0.55	234	0.3414	0.9336	0.036
0.55	246	-0.146	0.8644	0.0312
0.65	126	-0.2884	1.1571	0.0344
0.65	138	-1.353	0.8902	0.0842
0.65	150	-2.0243	0.8352	0.1215
0.65	198	-1.4236	1.1559	0.088
0.65	210	1.3459	0.7359	0.0838
0.65	222	-0.708	0.9323	0.0509
0.65	234	1.6235	0.47	0.0991
0.65	246	-0.0317	1.0418	0.0301
0.75	138	2.3918	0.569	0.1423
0.75	150	0.9986	1.1221	0.0654
0.75	210	1.6244	0.7543	0.0991
0.75	222	0.2081	0.7997	0.0323
0.75	234	-0.8903	0.7198	0.0598
0.75	246	0.4224	1.3121	0.0388
0.85	210	-0.6384	1.0789	0.0477
0.85	222	1.8771	0.4323	0.1132
0.85	234	-0.7465	0.661	0.0528
0.85	246	0.2798	0.8046	0.0341
0.85	258	-1.3545	0.8396	0.0843