CLAS Physics Database

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Measurement E151M2985

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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 :	0.205 GeV²
W :	1355 GeV
ε :	0.901
E_beam :	1.9889 GeV
ε_L:	0.4829

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
0.25	66	0.0011	0.2346	0.03
0.25	294	-0.387	0.2576	0.031
0.35	78	0.4061	0.2479	0.0311
0.45	78	-0.3556	0.2445	0.0308
0.45	294	-0.4378	0.2306	0.0313
0.65	102	-0.2503	0.2241	0.0304
0.65	114	-0.0844	0.2524	0.03
0.65	270	-0.0764	0.2251	0.03
0.75	90	0.1927	0.1928	0.0302
0.75	102	-0.2515	0.2033	0.0304
0.75	114	0.3167	0.1856	0.0307
0.75	126	0.398	0.2383	0.031
0.75	234	-0.1126	0.2317	0.0301
0.75	246	0.2431	0.1891	0.0304
0.75	258	0.1346	0.1862	0.0301
0.75	270	0.3082	0.2057	0.0306
0.75	282	-0.1792	0.2338	0.0302
0.85	66	0.0778	0.2653	0.03
0.85	90	-0.2364	0.1729	0.0304
0.85	102	0.1385	0.1739	0.0301
0.85	114	0.3949	0.2389	0.031
0.85	126	-0.0618	0.2107	0.03
0.85	138	0.3184	0.2386	0.0307
0.85	222	0.0706	0.2387	0.03
0.85	234	0.2484	0.2049	0.0304
0.85	246	-0.3805	0.1867	0.031
0.85	258	0.1153	0.1821	0.0301
0.85	270	0.036	0.2052	0.03
0.85	282	-0.2194	0.1798	0.0303
0.85	294	-0.0424	0.1767	0.03
0.95	102	0.4337	0.1937	0.0312
0.95	114	0.3248	0.2527	0.0307
0.95	126	0.436	0.2097	0.0312
0.95	138	-0.2235	0.2349	0.0303
0.95	150	0.3117	0.2494	0.0306
0.95	222	-0.2182	0.2242	0.0303
0.95	234	-0.063	0.2329	0.03
0.95	246	0.2268	0.2187	0.0303
0.95	258	-0.0963	0.2122	0.0301
0.95	270	-0.1345	0.2056	0.0301
0.95	282	0.2687	0.2412	0.0305
0.95	294	-0.0949	0.2217	0.0301