CLAS Physics Database

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Measurement E151M1953

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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 :	0.0707 GeV²
W :	1235 GeV
ε :	0.9751
E_beam :	2.2596 GeV
ε_L:	0.4745

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
0.45	78	0.0796	0.4012	0.0375
0.55	78	-0.5557	0.4266	0.048
0.65	270	0.9399	2.0139	0.0914
0.75	258	4.5933	2.1642	0.4232
0.75	270	0.3152	2.2863	0.0417
0.85	114	0.7512	3.7173	0.0753
0.85	126	1.3135	2.6929	0.1244
0.85	138	-1.3863	3.3205	0.1309
0.85	150	-3.978	3.3779	0.3668
0.95	126	-4.314	9.0354	0.3976
0.95	138	-5.4101	9.3875	0.4981
0.95	150	8.6608	2.0712	0.1523
0.95	162	9.412	7.9936	0.8655
0.55	270	-0.2728	0.5322	0.0349
0.65	90	-0.1529	0.5136	0.0316
0.65	270	0.4512	0.4982	0.042
0.75	246	0.4414	0.5196	0.0415
0.75	258	0.02	0.4584	0.03
0.75	270	-0.0086	0.4559	0.03
0.85	126	-0.9194	0.4968	0.0669
0.85	138	0.2171	0.5084	0.0332
0.85	150	-0.7483	0.6388	0.0572
0.85	246	0.0205	0.5268	0.03
0.85	258	0.1515	0.4749	0.0316
0.95	114	-1.7214	0.8737	0.1159
0.95	126	0.0212	0.9732	0.03
0.95	150	1.0958	0.7674	0.0773
0.95	162	-1.0667	0.8678	0.0756
0.95	174	-1.0546	1.0504	0.0749
0.95	186	-0.8757	1.0032	0.0644