CLAS Physics Database

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Measurement E151M2981

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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 :	0.101 GeV²
W :	1355 GeV
ε :	0.9308
E_beam :	1.9889 GeV
ε_L:	0.2964

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
0.15	306	-0.0584	0.24	0.03
0.25	54	-0.0786	0.2714	0.03
0.25	66	0.0124	0.2415	0.03
0.25	78	0.5808	0.1852	0.0322
0.25	282	-0.0384	0.2805	0.03
0.25	294	-0.1529	0.1889	0.0302
0.25	306	-0.1281	0.2219	0.0301
0.35	66	0.2448	0.1745	0.0304
0.35	78	0.1452	0.1819	0.0301
0.35	282	0.0738	0.2144	0.03
0.35	294	0.1438	0.2173	0.0301
0.35	306	0.2515	0.2098	0.0304
0.45	66	-0.0369	0.1689	0.03
0.45	78	0.0696	0.1726	0.03
0.45	90	0.1296	0.2354	0.0301
0.45	282	0.178	0.2349	0.0302
0.45	294	0.0838	0.1959	0.03
0.55	66	0.2609	0.1993	0.0305
0.55	78	-0.1455	0.1832	0.0301
0.55	258	-0.1665	0.2288	0.0302
0.55	270	-0.0344	0.2194	0.03
0.55	282	-0.0278	0.2397	0.03
0.55	294	-0.2253	0.2669	0.0303
0.65	66	0.0885	0.2434	0.0301
0.65	78	-0.0988	0.2265	0.0301
0.65	90	0.3093	0.2162	0.0306
0.65	102	-0.171	0.204	0.0302
0.65	114	0.3144	0.1836	0.0307
0.65	126	0.6278	0.2	0.0325
0.65	234	-0.2267	0.2161	0.0303
0.65	246	0.123	0.1773	0.0301
0.65	258	-0.0187	0.1841	0.03
0.65	270	0.0569	0.2069	0.03
0.65	282	-0.0552	0.228	0.03
0.75	90	-0.0991	0.1966	0.0301
0.75	102	-0.2166	0.1719	0.0303
0.75	114	0.2096	0.1604	0.0303
0.75	126	0.1452	0.1653	0.0301
0.75	138	0.2545	0.2113	0.0304
0.75	222	-0.1591	0.2277	0.0302
0.75	234	0.3812	0.1713	0.031
0.75	246	-0.201	0.187	0.0303
0.75	258	-0.1224	0.171	0.0301
0.75	270	-0.3377	0.1714	0.0308
0.75	282	-0.0075	0.2107	0.03
0.85	90	0.1188	0.2514	0.0301
0.85	102	-0.1609	0.1503	0.0302
0.85	114	0.1781	0.1574	0.0302
0.85	126	0.055	0.1545	0.03
0.85	138	-0.1078	0.1762	0.0301
0.85	150	-0.1344	0.1826	0.0301
0.85	162	0.305	0.2157	0.0306
0.85	210	-0.4212	0.2251	0.0312
0.85	222	0.041	0.1861	0.03
0.85	234	-0.0669	0.1727	0.03
0.85	246	-0.1315	0.1477	0.0301
0.85	258	-0.2105	0.1466	0.0303
0.85	270	-0.1131	0.1601	0.0301
0.85	282	0.0348	0.1936	0.03
0.95	114	-0.224	0.2568	0.0303
0.95	126	-0.065	0.2339	0.03
0.95	138	0.0727	0.2218	0.03
0.95	150	-0.3721	0.1946	0.0309
0.95	162	0.2832	0.2257	0.0305
0.95	198	0.1198	0.255	0.0301
0.95	210	0.2774	0.2208	0.0305
0.95	222	0.0032	0.2247	0.03
0.95	234	0.0969	0.184	0.0301
0.95	246	-0.0969	0.1793	0.0301
0.95	258	0.1816	0.1714	0.0302
0.95	270	-0.4094	0.1575	0.0311