CLAS Physics Database

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Measurement E151M3488

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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 :	0.496 GeV²
W :	1475 GeV
ε :	0.8952
E_beam :	2.999 GeV
ε_L:	0.4873

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	282	0.1621	0.2133	0.0302
0.25	294	0.3112	0.2646	0.0306
0.45	90	-0.144	0.2261	0.0301
0.45	102	0.0326	0.2251	0.03
0.55	78	-0.2358	0.2166	0.0304
0.55	90	0.2812	0.219	0.0305
0.55	102	-0.1254	0.2204	0.0301
0.65	54	-0.0795	0.281	0.03
0.65	78	-0.1426	0.1905	0.0301
0.65	90	-0.1538	0.2648	0.0302
0.65	102	-0.0056	0.2013	0.03
0.65	114	-0.5934	0.2086	0.0323
0.65	246	-0.1294	0.2029	0.0301
0.65	258	-0.5011	0.2226	0.0316
0.75	54	-0.3398	0.2071	0.0308
0.75	78	-0.0093	0.2766	0.03
0.75	90	0.3389	0.1795	0.0308
0.75	102	0.2801	0.2092	0.0305
0.75	114	0.1619	0.2692	0.0302
0.75	222	-0.2357	0.2255	0.0304
0.75	234	-0.161	0.2411	0.0302
0.75	246	-0.2301	0.2212	0.0304
0.75	258	0.2389	0.2608	0.0304
0.75	270	-0.0546	0.2291	0.03
0.75	282	0.0847	0.2355	0.03
0.75	294	0.0652	0.2414	0.03
0.85	54	-0.0156	0.2535	0.03
0.85	90	0.0633	0.2183	0.03
0.85	222	-0.2132	0.255	0.0303
0.85	234	-0.6134	0.1779	0.0324
0.85	246	-0.2588	0.2234	0.0304
0.85	258	0.1198	0.1982	0.0301
0.85	270	0.3618	0.1883	0.0309
0.85	282	-0.1216	0.1763	0.0301
0.85	294	-0.0695	0.1958	0.03
0.85	306	0.3337	0.1907	0.0307
0.85	318	-0.0857	0.2103	0.03
0.95	210	-0.3436	0.2685	0.0308
0.95	234	-0.1021	0.2416	0.0301
0.95	246	-0.358	0.2619	0.0308
0.95	258	-0.2736	0.2291	0.0305
0.95	270	-0.0255	0.2362	0.03
0.95	282	-0.0555	0.2345	0.03
0.95	294	-0.122	0.2041	0.0301
0.95	306	0.0445	0.2209	0.03
0.95	318	0.1343	0.2039	0.0301
0.95	330	-0.5054	0.206	0.0317
0.95	342	0.2697	0.2533	0.0305