CLAS Physics Database

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Measurement E151M2870

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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 :	0.0245 GeV²
W :	1565 GeV
ε :	0.6351
E_beam :	1.3383 GeV
ε_L:	0.0215

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
0.45	30	-0.187	0.255	0.0302
0.45	42	-0.2372	0.1918	0.0309
0.55	138	-0.25	0.3449	0.0304
0.55	150	0.1181	0.3502	0.0301
0.55	162	-0.0621	0.2519	0.03
0.55	210	0.5391	0.2855	0.0319
0.55	222	-0.3663	0.1732	0.0311
0.55	234	0.4974	0.2871	0.0316
0.65	150	0.2477	0.3928	0.0304
0.65	210	-0.1914	0.3333	0.0302
0.65	222	-0.4071	0.3672	0.0311
0.65	234	-0.061	0.387	0.03
0.75	222	0.1063	0.3125	0.0301
0.75	234	0.5225	0.3358	0.0318
0.75	246	0.1544	0.3803	0.0302
0.85	222	-0.1731	0.3434	0.0302
0.85	234	-0.3087	0.355	0.0306
0.85	246	0.1632	0.3385	0.0302
0.55	246	0.2851	0.2617	0.0305
0.65	138	0.1081	0.2635	0.0301
0.65	150	-0.0417	0.2701	0.03
0.65	222	0.0445	0.2335	0.03
0.75	138	0.1076	0.2555	0.0301
0.75	210	-0.2741	0.264	0.0305
0.75	222	0.2124	0.2554	0.0303
0.75	234	-0.0984	0.264	0.0301
0.75	246	-0.2997	0.2414	0.0306
0.85	210	0.4098	0.2632	0.0311
0.85	222	0.3158	0.254	0.0307
0.85	234	-0.4289	0.2073	0.0312
0.85	246	-0.3661	0.2315	0.0309