CLAS Physics Database

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Measurement E151M2518

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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 :	0.0593 GeV²
W :	1295 GeV
ε :	0.8216
E_beam :	1.0539 GeV
ε_L:	0.234

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	54	0.2008	0.2542	0.0303
0.25	30	0.2838	0.2528	0.0305
0.25	42	-0.1943	0.2342	0.0303
0.35	30	-0.0063	0.2092	0.03
0.35	42	-0.0292	0.223	0.03
0.45	42	0.3728	0.2289	0.0309
0.45	270	0.0205	0.2138	0.03
0.55	246	0.2414	0.1674	0.0304
0.55	258	-0.4886	0.1394	0.0316
0.55	270	0.2019	0.1553	0.0303
0.55	282	-0.1384	0.1758	0.0301
0.65	234	0.1363	0.2022	0.0301
0.65	246	-0.2595	0.1442	0.0304
0.65	258	-0.2463	0.1462	0.0304
0.65	270	-0.4444	0.1439	0.0313
0.65	282	-0.0718	0.1813	0.03
0.75	126	-0.084	0.2085	0.03
0.75	138	0.1874	0.1606	0.0302
0.75	150	-0.0252	0.1711	0.03
0.75	162	0.1654	0.1739	0.0302
0.75	174	-0.1332	0.182	0.0301
0.75	222	-0.0628	0.236	0.03
0.75	234	0.3434	0.1471	0.0308
0.75	246	0.2816	0.1581	0.0305
0.75	258	-0.0189	0.1446	0.03
0.75	270	0.1185	0.139	0.0301
0.75	282	0.2643	0.1516	0.0305
0.85	126	0.0452	0.2026	0.03
0.85	138	0.4447	0.1533	0.0313
0.85	150	-0.0511	0.1632	0.03
0.85	162	0.1792	0.169	0.0302
0.85	174	-0.4006	0.16	0.0311
0.85	186	-0.207	0.1769	0.0303
0.85	198	-0.2366	0.232	0.0304
0.85	222	-0.4753	0.219	0.0315
0.85	234	-0.0049	0.1835	0.03
0.85	246	0.0526	0.1368	0.03
0.85	258	-0.0261	0.1317	0.03
0.85	270	-0.0852	0.1285	0.03
0.85	282	-0.3022	0.1452	0.0306
0.95	114	-0.1839	0.2319	0.0302
0.95	126	0.2242	0.2111	0.0303
0.95	138	0.0173	0.1989	0.03
0.95	150	0.0504	0.1938	0.03
0.95	162	0.1956	0.1803	0.0303
0.95	174	-0.1328	0.2413	0.0301
0.95	258	-0.236	0.2217	0.0304
0.95	270	-0.0253	0.2247	0.03