CLAS Physics Database

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Measurement E151M3585

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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_LU,
Beam asymmetry.
Beam: e, polarization: longitudinal
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π⁺n, polarization: none

Q² :	0.2445 GeV²
W :	1715 GeV
ε :	0.8569
E_beam :	2.999 GeV
ε_L:	0.1388

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_LU,
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_LU	Stat. error	Syst. error
0.55	102	-0.0238	0.2525	0.03
0.55	114	-0.1328	0.2661	0.0301
0.65	102	0.3666	0.2256	0.0309
0.65	114	0.2542	0.2105	0.0304
0.65	126	-0.0294	0.2539	0.03
0.65	186	-0.066	0.28	0.03
0.65	210	-0.0558	0.2551	0.03
0.65	234	-0.2249	0.2602	0.0303
0.65	282	0.4742	0.2552	0.0315
0.65	294	-0.5046	0.2161	0.0317
0.75	78	0.0188	0.2762	0.03
0.75	90	0.0952	0.2274	0.0301
0.75	114	0.0553	0.2848	0.03
0.75	126	0.222	0.2105	0.0303
0.75	138	0.1933	0.26	0.0302
0.75	186	-0.1698	0.2746	0.0302
0.75	198	-0.4994	0.1808	0.0316
0.75	210	-0.0298	0.2113	0.03
0.75	222	0.0041	0.2071	0.03
0.75	234	-0.4317	0.2354	0.0312
0.75	282	0.3702	0.2643	0.0309
0.75	294	-0.2338	0.235	0.0304
0.85	66	0.0424	0.2736	0.03
0.85	78	0.1133	0.1928	0.0301
0.85	90	0.5605	0.182	0.032
0.85	102	0.8539	0.2014	0.0345
0.85	162	0.0464	0.2852	0.03
0.85	186	-0.3497	0.2298	0.0308
0.85	198	0.0211	0.2157	0.03
0.85	210	-0.3388	0.1801	0.0308
0.85	222	0.0202	0.1804	0.03
0.85	234	0.0103	0.1677	0.03
0.85	246	0.2896	0.1859	0.0306
0.85	258	-0.0173	0.2694	0.03
0.95	90	-0.1775	0.2735	0.0302
0.95	174	-0.053	0.2514	0.03
0.95	186	0.2897	0.2139	0.0306
0.95	198	-0.1863	0.2004	0.0302
0.95	210	-0.1172	0.206	0.0301
0.95	222	-0.4675	0.1738	0.0314
0.95	234	-0.1371	0.1953	0.0301
0.95	246	-0.0881	0.1734	0.0301
0.95	258	-0.3418	0.2148	0.0308
0.95	270	-0.0651	0.2409	0.03