CLAS Physics Database

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Measurement E151M3047

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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 :	0.205 GeV²
W :	1475 GeV
ε :	0.8458
E_beam :	1.9889 GeV
ε_L:	0.2713

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	66	-0.2084	0.2537	0.0303
0.25	294	-0.2699	0.2645	0.0305
0.35	66	-0.2037	0.2462	0.0303
0.35	78	0.1898	0.2675	0.0302
0.35	282	-0.5598	0.2151	0.032
0.35	306	-0.2032	0.2577	0.0303
0.45	66	0.4332	0.2501	0.0312
0.45	78	-0.4723	0.2393	0.0315
0.45	282	0.3383	0.2357	0.0308
0.45	294	0.0536	0.2529	0.03
0.55	66	0.4651	0.2285	0.0314
0.55	114	-0.2645	0.2415	0.0305
0.55	282	-0.5297	0.2409	0.0318
0.55	306	-0.6872	0.222	0.033
0.65	102	0.2249	0.2304	0.0303
0.65	114	0.1394	0.2236	0.0301
0.65	126	-0.3018	0.2284	0.0306
0.65	222	-0.0569	0.2589	0.03
0.65	234	-0.1718	0.2498	0.0302
0.65	246	-0.4309	0.2007	0.0312
0.65	258	-0.2001	0.2549	0.0303
0.65	294	-0.141	0.2699	0.0301
0.75	90	0.0572	0.2593	0.03
0.75	102	0.0434	0.2233	0.03
0.75	114	0.0204	0.2091	0.03
0.75	126	-0.0802	0.2227	0.03
0.75	210	0.0857	0.2706	0.03
0.75	234	-0.0694	0.2379	0.03
0.75	246	0.1223	0.201	0.0301
0.75	258	-0.0058	0.1944	0.03
0.75	270	0.1658	0.2484	0.0302
0.85	78	0.2228	0.273	0.0303
0.85	102	-0.1334	0.2336	0.0301
0.85	114	-0.0808	0.2203	0.03
0.85	126	0.3546	0.2375	0.0308
0.85	138	-0.087	0.2548	0.0301
0.85	210	0.0906	0.2631	0.0301
0.85	222	0.1782	0.2392	0.0302
0.85	234	-0.0407	0.2111	0.03
0.85	246	-0.2047	0.1666	0.0303
0.85	258	-0.3715	0.2018	0.0309
0.85	270	-0.2656	0.1927	0.0305
0.85	282	0.2148	0.2571	0.0303
0.95	78	-0.237	0.2803	0.0304
0.95	90	-0.071	0.2692	0.03
0.95	222	0.0565	0.2495	0.03
0.95	234	0.0335	0.269	0.03
0.95	246	0.0078	0.2383	0.03
0.95	258	-0.3856	0.215	0.031
0.95	270	-0.29	0.2369	0.0306
0.95	282	0.0827	0.2385	0.03
0.95	294	0.0175	0.2585	0.03