CLAS Physics Database

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Measurement E151M2940

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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 :	0.205 GeV²
W :	1265 GeV
ε :	0.9289
E_beam :	1.9889 GeV
ε_L:	0.784

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	66	0.1349	0.2071	0.0301
0.35	66	0.2586	0.2126	0.0304
0.35	78	-0.0738	0.2215	0.03
0.45	66	-0.2689	0.2296	0.0305
0.45	78	-0.4027	0.2347	0.0311
0.45	282	-0.1923	0.228	0.0302
0.55	66	-0.2159	0.2698	0.0303
0.55	270	0.5033	0.1899	0.0316
0.55	282	-0.1577	0.2235	0.0302
0.65	258	0.0908	0.2281	0.0301
0.65	270	-0.2322	0.2037	0.0304
0.65	282	0.3955	0.1541	0.031
0.65	294	-0.1513	0.2174	0.0302
0.75	78	0.1826	0.2139	0.0302
0.75	90	0.2725	0.1969	0.0305
0.75	102	0.0794	0.2615	0.03
0.75	114	0.2182	0.2498	0.0303
0.75	258	0.0254	0.2027	0.03
0.75	270	-0.1641	0.1973	0.0302
0.75	282	-0.0537	0.2159	0.03
0.85	78	0.0657	0.1965	0.03
0.85	90	0.2956	0.2132	0.0306
0.85	102	-0.0002	0.2087	0.03
0.85	114	-0.0549	0.2114	0.03
0.85	126	-0.101	0.2139	0.0301
0.85	234	-0.2029	0.2702	0.0303
0.85	246	-0.1251	0.1861	0.0301
0.85	258	-0.0278	0.2247	0.03
0.85	270	-0.171	0.1956	0.0302
0.85	282	-0.1109	0.1802	0.0301
0.85	294	-0.0865	0.1835	0.03
0.95	78	0.3197	0.2368	0.0307
0.95	90	0.6645	0.1392	0.0328
0.95	102	-0.0966	0.2334	0.0301
0.95	114	-0.1327	0.2017	0.0301
0.95	126	0.1671	0.2465	0.0302
0.95	138	0.1939	0.2575	0.0302
0.95	150	0.2748	0.2105	0.0305
0.95	246	-0.306	0.2667	0.0306
0.95	270	-0.3297	0.2279	0.0307