CLAS Physics Database

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Measurement E151M1986

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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 :	0.0496 GeV²
W :	1325 GeV
ε :	0.9646
E_beam :	2.2596 GeV
ε_L:	0.197

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	66	-0.1536	0.6646	0.0316
0.55	78	1.0182	0.5705	0.0727
0.65	78	0.3079	0.6028	0.0361
0.65	246	-0.4027	0.5389	0.0398
0.65	258	1.3142	0.6001	0.0906
0.75	114	-1.4324	0.5784	0.0979
0.75	126	0.0115	0.7981	0.03
0.75	138	-0.1868	0.6716	0.0324
0.75	234	-0.6318	0.715	0.0509
0.75	246	-0.5634	0.6168	0.0474
0.75	258	0.0669	0.6293	0.0303
0.75	270	1.2178	0.5938	0.0847
0.85	114	-1.0368	0.7926	0.0738
0.85	126	0.4695	0.7226	0.0428
0.85	138	-0.1121	0.7997	0.0309
0.85	234	0.3923	0.7433	0.0394
0.85	246	0.4617	0.6156	0.0425
0.85	258	1.346	0.5173	0.0926
0.85	270	-0.2455	0.6456	0.034
0.45	78	1.3441	1.4989	0.1271
0.55	78	0.4821	1.7187	0.0535
0.65	258	1.7491	1.4006	0.1635
0.75	126	0.1082	1.8368	0.0316
0.75	138	2.8243	1.6461	0.2613
0.75	246	-0.1608	1.4327	0.0334
0.75	258	0.8602	1.2326	0.0846
0.85	114	-2.208	1.9321	0.2051
0.85	138	-0.7356	2.0493	0.074
0.85	234	-0.8002	1.8166	0.0794
0.85	246	2.4812	1.584	0.23
0.85	258	-2.0053	1.3799	0.1867
0.85	270	-0.49	1.5582	0.0541