CLAS Physics Database

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Measurement E151M3045

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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 :	0.1435 GeV²
W :	1475 GeV
ε :	0.8676
E_beam :	1.9889 GeV
ε_L:	0.2118

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	294	0.0214	0.2618	0.03
0.25	66	0.0588	0.2273	0.03
0.25	78	0.6469	0.2008	0.0327
0.25	282	-0.3299	0.2213	0.0307
0.25	294	0.1872	0.2302	0.0302
0.25	306	-0.1727	0.2313	0.0302
0.35	66	0.389	0.2121	0.031
0.35	78	-0.3921	0.2081	0.031
0.35	282	0.0384	0.2347	0.03
0.35	294	0.5773	0.1626	0.0321
0.45	66	-0.0593	0.2718	0.03
0.45	78	0.0654	0.1962	0.03
0.45	270	0.1037	0.2595	0.0301
0.45	282	0.1781	0.2094	0.0302
0.45	294	-0.189	0.1691	0.0302
0.55	66	-0.2185	0.2709	0.0303
0.55	102	0.2991	0.2571	0.0306
0.55	114	-0.0464	0.216	0.03
0.55	258	-0.2021	0.2786	0.0303
0.55	282	-0.2059	0.2393	0.0303
0.55	306	-0.5362	0.2099	0.0319
0.65	102	0.0401	0.211	0.03
0.65	114	0.0671	0.1955	0.03
0.65	126	-0.1091	0.2239	0.0301
0.65	138	0.5302	0.2244	0.0318
0.65	234	0.2582	0.2395	0.0304
0.65	246	-0.3649	0.1909	0.0309
0.65	258	0.1586	0.2703	0.0302
0.65	270	-0.6934	0.2157	0.0331
0.65	294	-0.317	0.2191	0.0307
0.65	306	-0.4895	0.2149	0.0316
0.75	102	-0.1023	0.1989	0.0301
0.75	114	0.0537	0.1606	0.03
0.75	126	-0.0164	0.1858	0.03
0.75	138	0.4619	0.2096	0.0314
0.75	210	0.1984	0.2062	0.0303
0.75	222	0.1503	0.2312	0.0302
0.75	234	-0.052	0.1879	0.03
0.75	246	0.0164	0.171	0.03
0.75	258	-0.0763	0.2041	0.03
0.75	270	-0.1193	0.2811	0.0301
0.75	294	0.0886	0.2526	0.0301
0.85	78	0.0387	0.231	0.03
0.85	90	-0.0038	0.2194	0.03
0.85	102	0.0518	0.2203	0.03
0.85	114	-0.2456	0.2175	0.0304
0.85	126	-0.1321	0.2379	0.0301
0.85	138	0.398	0.1677	0.031
0.85	150	-0.0225	0.2691	0.03
0.85	198	0.2597	0.2564	0.0304
0.85	210	-0.1805	0.246	0.0302
0.85	222	-0.3922	0.2414	0.031
0.85	234	-0.1708	0.1755	0.0302
0.85	246	0.4072	0.1708	0.0311
0.85	258	0.04	0.197	0.03
0.85	270	-0.3559	0.2108	0.0308
0.95	90	0.0534	0.2636	0.03
0.95	210	-0.6393	0.1893	0.0326
0.95	222	0.0498	0.2153	0.03
0.95	234	-0.1149	0.2513	0.0301
0.95	246	-0.0616	0.18	0.03
0.95	258	0.2262	0.1954	0.0303
0.95	270	0.3496	0.1868	0.0308