CLAS Physics Database

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Measurement E151M2672

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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 :	0.1435 GeV²
W :	1235 GeV
ε :	0.8817
E_beam :	1.3383 GeV
ε_L:	0.717

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
0.35	282	-0.1528	0.2729	0.0302
0.45	270	0.1873	0.2498	0.0302
0.45	282	-0.1498	0.2106	0.0301
0.45	294	-0.3234	0.2548	0.0307
0.55	270	-0.1475	0.224	0.0301
0.55	282	-0.0515	0.1996	0.03
0.55	294	0.2509	0.2457	0.0304
0.65	258	-0.1138	0.2157	0.0301
0.65	270	0.2256	0.174	0.0303
0.65	282	-0.1532	0.2046	0.0302
0.65	294	0.0001	0.2404	0.03
0.75	246	-0.0763	0.2475	0.03
0.75	258	-0.0799	0.2664	0.03
0.75	270	-0.2493	0.1995	0.0304
0.75	282	-0.4766	0.1735	0.0315
0.75	294	-0.0622	0.2101	0.03
0.85	90	0.4474	0.2571	0.0313
0.85	102	0.2789	0.2343	0.0305
0.85	114	-0.0588	0.1951	0.03
0.85	126	-0.0174	0.2182	0.03
0.85	138	-0.0673	0.2285	0.03
0.85	246	-0.3453	0.2508	0.0308
0.85	258	0.2358	0.2552	0.0304
0.85	270	-0.113	0.2253	0.0301
0.85	282	0.1294	0.2306	0.0301
0.95	90	-0.1422	0.2478	0.0301
0.95	102	-0.3388	0.2212	0.0308
0.95	114	0.1808	0.2231	0.0302
0.95	126	-0.0222	0.2354	0.03
0.95	138	-0.3589	0.1914	0.0308
0.95	150	-0.1005	0.2581	0.0301
0.95	162	0.1848	0.2338	0.0302
0.95	174	0.0953	0.2354	0.0301
0.95	186	-0.1766	0.2472	0.0302
0.95	198	0.2494	0.214	0.0304
0.95	210	-0.3324	0.2593	0.0307
0.95	222	-0.2488	0.2858	0.0304
-0.05	42	-0.4008	0.3271	0.0311
0.45	270	-0.065	0.3538	0.03
0.45	282	-0.2345	0.3037	0.0304
0.45	294	0.0805	0.3247	0.03
0.55	270	-0.2637	0.2641	0.0305
0.55	282	-0.5909	0.2118	0.0322
0.55	294	-0.4523	0.2883	0.0313
0.65	258	-0.561	0.2783	0.032
0.65	270	-0.3025	0.2591	0.0306
0.65	282	0.7654	0.1356	0.0337
0.75	246	0.3931	0.3384	0.031
0.75	258	0.3879	0.2966	0.031
0.75	270	0.0532	0.3319	0.03
0.75	282	-0.4705	0.2962	0.0314
0.75	294	-0.3447	0.2699	0.0308
0.85	90	0.3529	0.3708	0.0308
0.85	102	-0.5858	0.2397	0.0322
0.85	114	0.2099	0.3074	0.0303
0.85	126	0.0465	0.2655	0.03
0.85	138	-0.0077	0.365	0.03
0.85	150	0.6137	0.2514	0.0324
0.85	258	-0.3963	0.3212	0.031
0.85	270	0.432	0.2939	0.0312
0.85	282	-0.1433	0.3447	0.0301
0.95	102	0.7193	0.1629	0.0333
0.95	114	0.095	0.3529	0.0301
0.95	126	0.1168	0.3016	0.0301
0.95	138	-0.3268	0.2752	0.0307
0.95	150	0.0982	0.3325	0.0301
0.95	162	0.4155	0.3309	0.0311
0.95	174	0.5525	0.2108	0.032