CLAS Physics Database

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Measurement E151M2816

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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 :	0.0291 GeV²
W :	1475 GeV
ε :	0.761
E_beam :	1.3383 GeV
ε_L:	0.0445

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	0.0876	0.2013	0.0303
0.35	30	0.2363	0.2604	0.0304
0.35	42	0.5429	0.1841	0.0319
0.45	18	0.0394	0.2197	0.03
0.45	30	-0.2705	0.1696	0.0305
0.45	42	-0.2895	0.1592	0.032
0.45	222	0.1046	0.1877	0.0302
0.45	234	-0.0105	0.3939	0.03
0.55	30	-0.4879	0.3135	0.0315
0.55	42	0.5533	0.3567	0.032
0.55	138	0.2292	0.2457	0.0303
0.55	150	0.2067	0.3359	0.0303
0.55	210	-0.0309	0.3664	0.03
0.55	222	0.1566	0.2717	0.0302
0.55	234	-0.038	0.2347	0.03
0.55	246	-0.1142	0.3547	0.0301
0.65	126	0.4592	0.3175	0.0314
0.65	138	0.7283	0.2273	0.0333
0.65	150	0.1971	0.2989	0.0303
0.65	162	0.412	0.3034	0.0311
0.65	198	-0.6342	0.2318	0.0326
0.65	210	-0.229	0.305	0.0303
0.65	222	0.0055	0.2512	0.03
0.65	234	0.3234	0.2118	0.0307
0.65	246	-0.4533	0.2343	0.0313
0.65	258	-0.0519	0.3428	0.03
0.75	126	0.1395	0.3602	0.0301
0.75	138	0.1686	0.2715	0.0302
0.75	150	-0.1384	0.3412	0.0301
0.75	210	0.4944	0.2902	0.0316
0.75	222	-0.4751	0.3629	0.0315
0.75	234	0.1778	0.2312	0.0302
0.75	246	-0.0785	0.2672	0.03
0.75	258	-0.3332	0.3732	0.0307
0.85	114	-0.4827	0.245	0.0315
0.85	210	-0.085	0.3365	0.03
0.85	222	-0.4029	0.2242	0.0311
0.85	234	0.0282	0.2751	0.03
0.85	246	0.1241	0.275	0.0301
0.85	258	-0.4541	0.2437	0.0313
0.95	126	-0.0949	0.3729	0.0301
0.95	246	0.1504	0.3751	0.0302
0.45	246	-0.002	0.2771	0.03
0.55	30	-0.1114	0.2781	0.0301
0.55	42	0.3036	0.2397	0.0306
0.55	126	-0.0258	0.2144	0.03
0.55	138	0.2214	0.2059	0.0303
0.55	150	-0.2615	0.2153	0.0305
0.55	210	0.1025	0.2284	0.0301
0.55	222	-0.0408	0.2347	0.03
0.55	234	-0.4743	0.192	0.0315
0.55	246	0.1384	0.2028	0.0301
0.65	126	0.0449	0.2407	0.03
0.65	138	-0.0547	0.1845	0.03
0.65	150	0.0376	0.2048	0.03
0.65	162	-0.0578	0.2537	0.03
0.65	198	-0.2453	0.2786	0.0304
0.65	210	0.4363	0.2095	0.0312
0.65	222	-0.0471	0.1856	0.03
0.65	234	0.1474	0.1664	0.0301
0.65	246	0.3271	0.2048	0.0307
0.75	126	-0.2541	0.1972	0.0304
0.75	138	0.0279	0.2213	0.03
0.75	150	0.2328	0.1984	0.0304
0.75	162	0.0302	0.2576	0.03
0.75	210	-0.2972	0.2129	0.0306
0.75	222	-0.1904	0.1842	0.0302
0.75	234	0.0738	0.1807	0.03
0.75	246	0.265	0.1914	0.0305
0.75	258	-0.8799	0.2115	0.0348
0.85	114	0.0218	0.2379	0.03
0.85	126	0.2961	0.246	0.0306
0.85	210	0.1128	0.2383	0.0301
0.85	222	-0.244	0.1962	0.0304
0.85	234	0.0965	0.1704	0.0301
0.85	246	-0.4744	0.1898	0.0315
0.85	258	0.7737	0.1963	0.0338
0.95	126	-0.0358	0.263	0.03
0.95	234	-0.3149	0.2668	0.0307
0.95	246	-0.0528	0.2668	0.03