CLAS Physics Database

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Measurement E151M1891

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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 :	0.0291 GeV²
W :	1625 GeV
ε :	0.8139
E_beam :	1.9889 GeV
ε_L:	0.0261

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	-0.4772	0.8955	0.0417
0.45	78	1.4375	0.8293	0.0921
0.45	90	1.5902	0.8422	0.1009
0.45	138	-0.2806	0.9323	0.0345
0.45	270	0.0221	0.8395	0.03
0.45	282	-0.2285	0.8863	0.033
0.55	78	-1.5085	0.7695	0.0962
0.55	198	-1.3353	0.9104	0.0863
0.55	210	0.3192	0.7651	0.0357
0.55	270	-0.7305	0.6533	0.0535
0.55	282	-0.1188	0.8509	0.0309
0.65	126	-1.4615	0.7344	0.0935
0.65	138	-0.7587	0.7528	0.0549
0.65	150	-0.9197	0.9589	0.0633
0.65	210	-2.0045	0.7031	0.1251
0.65	222	-0.1795	0.8042	0.0319
0.65	282	0.0205	0.8267	0.03
0.75	66	-0.2798	0.8633	0.0345
0.75	78	0.0453	0.8704	0.0301
0.75	210	-0.2557	0.7194	0.0338
0.75	222	0.1443	0.7055	0.0312
0.75	270	1.1213	0.6086	0.0743
0.75	282	0.6024	0.7056	0.0472
0.75	294	0.502	0.8487	0.0427
0.85	114	-0.641	0.7661	0.0491
0.85	126	0.0321	0.6417	0.0301
0.85	138	-1.0335	0.7725	0.0694
0.85	198	-0.2628	0.7947	0.034
0.85	210	0.4076	0.7404	0.0389
0.85	222	0.2865	0.7313	0.0347