CLAS Physics Database

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Measurement E151M2581

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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 :	0.0496 GeV²
W :	1385 GeV
ε :	0.7168
E_beam :	1.0539 GeV
ε_L:	0.1059

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	0.4042	0.2066	0.0311
0.25	54	-0.3925	0.2475	0.031
0.35	30	-0.3714	0.232	0.0309
0.35	42	0.3595	0.1546	0.0308
0.35	54	0.1859	0.2002	0.0302
0.45	30	0.1373	0.2112	0.0301
0.45	42	-0.0347	0.1996	0.03
0.45	54	-0.5562	0.2175	0.032
0.45	246	-0.2575	0.2597	0.0304
0.55	42	0.1735	0.2372	0.0302
0.55	234	-0.0787	0.1742	0.03
0.55	246	0.0571	0.1715	0.03
0.55	258	0.0395	0.1611	0.03
0.65	138	0.1315	0.205	0.0301
0.65	150	-0.098	0.2088	0.0301
0.65	162	-0.0243	0.2222	0.03
0.65	174	-0.2335	0.2349	0.0304
0.65	222	-0.1575	0.185	0.0302
0.65	234	-0.2692	0.1704	0.0305
0.65	246	0.1153	0.1573	0.0301
0.65	258	-0.0851	0.1507	0.03
0.65	270	-0.1794	0.1892	0.0302
0.75	126	-0.0937	0.2597	0.0301
0.75	138	0.1645	0.1881	0.0302
0.75	150	-0.1608	0.1779	0.0302
0.75	162	-0.1541	0.198	0.0302
0.75	210	0.081	0.2629	0.03
0.75	222	-0.194	0.1868	0.0302
0.75	234	0.1375	0.1784	0.0301
0.75	246	-0.157	0.1427	0.0302
0.75	258	-0.0154	0.1424	0.03
0.75	270	0.1472	0.1812	0.0301
0.85	138	0.0597	0.2223	0.03
0.85	150	-0.1237	0.2379	0.0301
0.85	162	-0.3079	0.2229	0.0306
0.85	174	-0.2333	0.2318	0.0304
0.85	234	-0.0101	0.1682	0.03
0.85	246	-0.1357	0.1445	0.0301
0.85	258	-0.0806	0.1546	0.03
0.85	270	0.2481	0.1329	0.0304
0.95	126	-0.1632	0.2598	0.0302
0.95	234	-0.2582	0.2246	0.0304
0.95	246	-0.1784	0.2273	0.0302
0.95	258	0.0173	0.1913	0.03
0.95	270	-0.6391	0.2063	0.0326