CLAS Physics Database

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Measurement E151M2550

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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 :	0.0084 GeV²
W :	1355 GeV
ε :	0.8064
E_beam :	1.0539 GeV
ε_L:	0.0258

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	42	-0.0218	0.2378	0.03
0.35	54	-0.0417	0.2489	0.03
0.45	42	-0.0648	0.2277	0.03
0.45	54	-0.2191	0.1942	0.0303
0.55	30	0.1264	0.236	0.0301
0.55	42	-0.0093	0.1872	0.03
0.55	54	-0.5948	0.1666	0.0323
0.55	222	0.1659	0.2452	0.0302
0.55	234	0.39	0.1849	0.031
0.55	246	-0.0057	0.2195	0.03
0.55	258	-0.4337	0.2077	0.0312
0.65	30	0.1823	0.2543	0.0302
0.65	42	-0.0934	0.1988	0.0301
0.65	54	0.0656	0.1971	0.03
0.65	150	-0.0314	0.2451	0.03
0.65	162	0.2379	0.2294	0.0304
0.65	174	0.0218	0.239	0.03
0.65	222	-0.2943	0.1792	0.0306
0.65	234	-0.1112	0.1625	0.0301
0.65	246	-0.3318	0.1819	0.0307
0.65	258	-0.3873	0.2085	0.031
0.75	138	0.2503	0.2319	0.0304
0.75	150	0.0422	0.2479	0.03
0.75	210	-0.1899	0.2302	0.0302
0.75	222	0.0536	0.1796	0.03
0.75	234	-0.0399	0.1666	0.03
0.75	246	-0.1707	0.1464	0.0302
0.75	258	-0.2345	0.2183	0.0304
0.85	222	-0.2905	0.1699	0.0306
0.85	234	0.1027	0.187	0.0301
0.85	246	-0.2195	0.1782	0.0303
0.85	258	0.3997	0.2173	0.031