CLAS Physics Database

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Measurement E151M2489

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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 :	0.0143 GeV²
W :	1265 GeV
ε :	0.8925
E_beam :	1.0539 GeV
ε_L:	0.0837

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	0.2869	0.2317	0.0305
0.25	54	-0.0199	0.2511	0.03
0.35	42	0.0974	0.1949	0.0301
0.35	54	-0.0338	0.1894	0.03
0.35	66	0.1176	0.2473	0.0301
0.45	30	0.2025	0.2141	0.0303
0.45	42	-0.1301	0.1688	0.0301
0.45	54	-0.1994	0.1872	0.0303
0.45	258	0.0608	0.2428	0.03
0.45	270	-0.1635	0.2062	0.0302
0.55	30	0.0444	0.2475	0.03
0.55	42	0.1759	0.1768	0.0302
0.55	54	0.0811	0.2085	0.03
0.55	234	0.1476	0.1897	0.0301
0.55	246	-0.0287	0.1597	0.03
0.55	258	-0.127	0.1351	0.0301
0.55	270	0.0742	0.1557	0.03
0.55	282	-0.2081	0.2231	0.0303
0.65	138	0.0671	0.2344	0.03
0.65	150	0.1696	0.2285	0.0302
0.65	162	0.1136	0.1964	0.0301
0.65	174	-0.0181	0.1846	0.03
0.65	186	-0.1937	0.2214	0.0302
0.65	198	-0.3008	0.243	0.0306
0.65	222	0.1652	0.2114	0.0302
0.65	234	-0.0837	0.1456	0.03
0.65	246	0.1137	0.119	0.0301
0.65	258	0.1228	0.1082	0.0301
0.65	270	-0.1555	0.1404	0.0302
0.65	282	-0.0267	0.2138	0.03
0.75	138	-0.1767	0.1815	0.0302
0.75	150	0.327	0.1676	0.0307
0.75	162	-0.4001	0.1533	0.031
0.75	174	-0.1088	0.1637	0.0301
0.75	186	-0.1812	0.2085	0.0302
0.75	198	-0.3006	0.1957	0.0306
0.75	210	0.108	0.1958	0.0301
0.75	222	0.0063	0.1829	0.03
0.75	234	-0.0325	0.1429	0.03
0.75	246	0.1286	0.1152	0.0301
0.75	258	0.135	0.1072	0.0301
0.75	270	-0.0047	0.1452	0.03
0.75	282	-0.1273	0.2183	0.0301
0.85	138	0.3585	0.2174	0.0308
0.85	150	0.2475	0.2306	0.0304
0.85	162	0.2654	0.2083	0.0305
0.85	174	-0.3487	0.1983	0.0308
0.85	186	-0.0165	0.2228	0.03
0.85	198	0.135	0.2455	0.0301
0.85	222	-0.2654	0.1851	0.0305
0.85	234	-0.0467	0.1545	0.03
0.85	246	-0.1745	0.1249	0.0302
0.85	258	-0.3571	0.1608	0.0308
0.85	270	0.2456	0.199	0.0304