CLAS Physics Database

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Measurement E151M1591

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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 :	0.0171 GeV²
W :	1475 GeV
ε :	0.7707
E_beam :	1.3383 GeV
ε_L:	0.027

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
0.35	42	0.1188	0.6748	0.0308
0.45	30	0.4301	0.7583	0.0396
0.45	54	-0.6893	0.7652	0.0511
0.45	138	-0.5908	0.8061	0.0464
0.45	150	0.9427	0.8762	0.064
0.45	222	-0.5446	0.8496	0.0443
0.45	234	0.4503	0.7256	0.0404
0.45	246	-0.8743	0.8167	0.0604
0.55	18	-0.9738	0.8107	0.0656
0.55	30	-0.8139	0.6939	0.0573
0.55	42	-0.9557	0.7244	0.0647
0.55	126	-0.0848	0.7685	0.0304
0.55	138	0.2059	0.5741	0.0324
0.55	150	-0.0115	0.6575	0.03
0.55	210	-0.8464	0.6807	0.0589
0.55	222	0.46	0.6249	0.0407
0.55	234	1.1447	0.6014	0.0749
0.55	246	1.3671	0.7847	0.0873
0.65	126	-0.5183	0.678	0.0432
0.65	138	0.2629	0.6179	0.0339
0.65	150	-0.2786	0.6874	0.0343
0.65	162	-1.3616	0.7125	0.0869
0.65	198	-1.0869	0.8287	0.0717
0.65	210	1.2777	0.7092	0.0822
0.65	222	-0.5212	0.5286	0.0433
0.65	234	-0.3302	0.5283	0.0359
0.65	246	-1.4922	0.5528	0.0943
0.75	126	0.1234	0.9644	0.0309
0.75	138	-0.0658	0.7875	0.0303
0.75	150	-0.4342	0.7974	0.0397
0.75	162	-0.5459	0.7541	0.0444
0.75	210	0.7673	0.7996	0.0549
0.75	222	-0.6061	0.5376	0.0471
0.75	234	-0.4389	0.4975	0.0399
0.75	246	-0.3976	0.5985	0.0383
0.85	126	-0.6909	0.6994	0.0511
0.85	138	2.156	0.6511	0.1327
0.85	210	-1.3793	0.6508	0.0879
0.85	222	-0.3478	0.5991	0.0365
0.85	234	-0.2828	0.4945	0.0345
0.85	246	0.5969	0.6581	0.0467
0.85	258	-0.2004	0.8171	0.0323
0.25	42	-2.3609	2.3609	0.1405
0.35	30	-0.459	1.2589	0.0402
0.35	42	1.652	0.719	0.1006
0.45	18	0.2128	1.0863	0.0325
0.45	30	-0.8377	0.878	0.0572
0.45	42	-0.1587	1.0454	0.0314
0.45	138	-0.7115	1.0381	0.0511
0.45	222	-0.0275	1.07	0.03
0.45	234	-1.3552	0.8899	0.0843
0.55	30	2.0538	0.5425	0.1231
0.55	42	-0.0688	0.8546	0.0303
0.55	126	0.9994	1.224	0.0654
0.55	138	-0.8663	0.9171	0.0586
0.55	150	1.7937	0.664	0.1085
0.55	210	-0.3792	0.845	0.0372
0.55	222	-0.6622	0.7316	0.0488
0.55	234	-0.3142	0.7375	0.0351
0.55	246	-0.0379	0.8708	0.0301
0.65	42	0.8613	1.1641	0.0584
0.65	126	0.0035	1.0415	0.03
0.65	138	-1.0126	0.8851	0.0661
0.65	150	-1.2343	0.9338	0.0778
0.65	162	-1.6832	0.8565	0.1024
0.65	210	-0.3549	0.9464	0.0364
0.65	222	-0.0597	0.795	0.0302
0.65	234	-0.3586	0.6875	0.0365
0.65	246	-1.4031	0.6801	0.0869
0.75	138	-0.5171	1.1055	0.0425
0.75	150	-0.8841	1.1603	0.0595
0.75	162	0.5718	1.144	0.0448
0.75	198	-0.3773	1.0996	0.0372
0.75	210	-1.3311	0.7034	0.083
0.75	222	-1.4849	0.5659	0.0914
0.75	234	-0.86	0.6336	0.0583
0.75	246	-0.2976	0.7581	0.0346
0.85	126	0.5524	0.9775	0.044
0.85	138	0.4197	0.9924	0.0387
0.85	210	-0.0627	0.8715	0.0302
0.85	222	0.0628	0.8306	0.0302
0.85	234	0.0661	0.6585	0.0302
0.85	246	-1.2586	0.7081	0.0791
0.95	222	1.1266	0.7102	0.0721
0.95	234	-0.7476	0.7947	0.0528