CLAS Physics Database

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Measurement E151M2509

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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 :	0.0121 GeV²
W :	1295 GeV
ε :	0.8686
E_beam :	1.0539 GeV
ε_L:	0.0564

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	42	0.2129	0.2351	0.0303
0.35	42	-0.2649	0.1888	0.0305
0.35	54	-0.0106	0.2106	0.03
0.35	66	0.6684	0.1787	0.0328
0.45	42	-0.0037	0.2105	0.03
0.45	258	0.1254	0.2274	0.0301
0.55	30	0.4002	0.2059	0.031
0.55	42	-0.0714	0.1825	0.03
0.55	54	-0.2298	0.245	0.0304
0.55	222	0.2334	0.2336	0.0304
0.55	234	-0.0347	0.1947	0.03
0.55	246	0.0656	0.153	0.03
0.55	258	-0.1783	0.1627	0.0302
0.55	270	0.0772	0.2036	0.03
0.65	138	0.3392	0.2352	0.0308
0.65	150	0.2126	0.203	0.0303
0.65	162	-0.1968	0.2177	0.0303
0.65	174	-0.1431	0.2506	0.0301
0.65	186	0.5662	0.2474	0.0321
0.65	198	0.4718	0.233	0.0314
0.65	210	0.3096	0.2146	0.0306
0.65	222	-0.1051	0.1878	0.0301
0.65	234	0.1795	0.1426	0.0302
0.65	246	0.0231	0.1241	0.03
0.65	258	-0.3148	0.1434	0.0307
0.65	270	0.1058	0.1709	0.0301
0.75	138	0.0592	0.235	0.03
0.75	150	0.1267	0.1905	0.0301
0.75	162	0.2289	0.1826	0.0303
0.75	174	0.0666	0.1945	0.03
0.75	186	-0.0932	0.2244	0.0301
0.75	210	0.1045	0.2201	0.0301
0.75	222	-0.028	0.1726	0.03
0.75	234	-0.1017	0.1469	0.0301
0.75	246	-0.1942	0.132	0.0303
0.75	258	0.1433	0.1442	0.0301
0.75	270	0.1997	0.1935	0.0303
0.85	162	0.1579	0.2504	0.0302
0.85	210	-0.2791	0.2284	0.0305
0.85	222	-0.0807	0.2136	0.03
0.85	234	-0.1638	0.1433	0.0302
0.85	246	-0.0578	0.148	0.03
0.85	258	-0.2575	0.1485	0.0304
0.85	270	0.0523	0.2247	0.03