CLAS Physics Database

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Measurement E151M1892

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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 :	0.0348 GeV²
W :	1625 GeV
ε :	0.8115
E_beam :	1.9889 GeV
ε_L:	0.0309

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	78	-1.2885	0.7452	0.0836
0.35	270	-0.2397	0.691	0.0333
0.35	282	0.8119	0.7379	0.0576
0.45	18	-0.9579	0.8283	0.0653
0.45	30	0.3596	0.9169	0.0371
0.45	66	-0.0959	0.9949	0.0306
0.45	78	0.1043	0.8074	0.0307
0.45	258	-0.3054	0.8137	0.0352
0.45	270	0.0334	0.7046	0.0301
0.45	282	0.0973	0.7755	0.0306
0.45	330	1.3378	0.8264	0.0864
0.55	78	-1.6962	0.8714	0.1071
0.55	90	-0.3489	0.9519	0.0367
0.55	114	-0.1917	0.8558	0.0322
0.55	126	-0.4673	0.7115	0.0413
0.55	138	0.7809	0.9297	0.056
0.55	150	-0.4511	0.9339	0.0406
0.55	198	-0.0163	0.8424	0.03
0.55	210	-0.4904	0.869	0.0422
0.55	222	-1.0355	0.8139	0.0695
0.55	258	-2.0044	0.6531	0.1251
0.55	270	0.0607	0.7119	0.0302
0.55	282	0.4484	0.9341	0.0405
0.65	78	-0.2053	0.8928	0.0325
0.65	114	-0.375	0.9565	0.0376
0.65	126	-0.904	0.6986	0.0625
0.65	138	0.0536	0.811	0.0302
0.65	150	0.3568	0.8847	0.037
0.65	198	-0.3451	0.9129	0.0366
0.65	210	-0.5282	0.781	0.0439
0.65	222	-1.3135	0.6832	0.0851
0.65	234	0.2801	0.9201	0.0345
0.65	270	-1.2452	0.7312	0.0812
0.65	282	-1	0.7111	0.0676
0.75	66	-0.5715	0.9118	0.0458
0.75	78	-0.861	0.9625	0.0602
0.75	198	-0.7407	0.7446	0.054
0.75	210	0.985	0.6537	0.0668
0.75	222	-0.1037	0.7818	0.0307
0.75	234	0.7272	0.7677	0.0533
0.75	246	0.4495	0.8825	0.0405
0.75	270	0.9446	0.5947	0.0646
0.75	282	0.7028	0.6458	0.0521
0.85	114	0.2898	0.75	0.0348
0.85	126	-0.3556	0.8148	0.0369
0.85	198	-0.1848	0.8069	0.032
0.85	210	-1.0729	0.6379	0.0716
0.85	222	-1.4082	0.7099	0.0905
0.85	234	-0.4811	0.8068	0.0418
0.85	258	0.5106	0.8178	0.0431
0.85	270	-0.234	0.7461	0.0332
0.85	282	-1.4754	0.7224	0.0943