CLAS Physics Database

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Measurement E151M2921

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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 :	0.0844 GeV²
W :	1235 GeV
ε :	0.9641
E_beam :	1.9889 GeV
ε_L:	0.5391

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	78	-0.1486	0.2598	0.0301
0.45	66	0.1633	0.2362	0.0302
0.45	78	0.019	0.1586	0.03
0.45	282	0.3528	0.2622	0.0308
0.55	78	0.1094	0.177	0.0301
0.55	90	-0.2131	0.2601	0.0303
0.55	270	0.0239	0.2538	0.03
0.55	282	0.0502	0.2155	0.03
0.65	90	-0.0132	0.2645	0.03
0.65	258	-0.0908	0.2064	0.0301
0.65	270	0.0132	0.1715	0.03
0.65	282	-0.5695	0.1581	0.0321
0.75	90	-0.2175	0.2849	0.0303
0.75	114	-0.1256	0.2489	0.0301
0.75	126	0.2847	0.2531	0.0305
0.75	246	-0.1767	0.2255	0.0302
0.75	258	-0.0082	0.1786	0.03
0.75	270	-0.1562	0.1631	0.0302
0.75	282	-0.0426	0.2528	0.03
0.85	90	0.0572	0.273	0.03
0.85	102	-0.0842	0.1758	0.03
0.85	114	0.1329	0.1661	0.0301
0.85	126	0.1808	0.1657	0.0302
0.85	138	0.146	0.1647	0.0301
0.85	150	0.1336	0.2431	0.0301
0.85	174	0.0439	0.2641	0.03
0.85	234	-0.2386	0.2733	0.0304
0.85	246	0.1848	0.2539	0.0302
0.85	258	0.233	0.1903	0.0304
0.85	270	-0.0887	0.2577	0.0301
0.95	102	0.1064	0.2245	0.0301
0.95	114	0.4353	0.1842	0.0312
0.95	126	-0.0153	0.1914	0.03
0.95	138	-0.2742	0.1654	0.0305
0.95	150	-0.0496	0.1661	0.03
0.95	162	-0.045	0.1898	0.03
0.95	174	0.3079	0.2132	0.0306
0.95	186	0.0739	0.2153	0.03
0.95	198	-0.5264	0.1801	0.0318
0.95	210	0.3061	0.245	0.0306