CLAS Physics Database

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Measurement E151M2831

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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 :	0.0143 GeV²
W :	1505 GeV
ε :	0.7348
E_beam :	1.3383 GeV
ε_L:	0.019

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
0.45	42	-0.4181	0.3279	0.0311
0.45	138	-0.4015	0.378	0.0311
0.45	222	0.196	0.3676	0.0303
0.55	30	0.8184	0.195	0.0342
0.55	42	0.0157	0.3187	0.03
0.55	150	-0.5007	0.3123	0.0316
0.55	210	-0.0014	0.3275	0.03
0.55	222	-0.5612	0.2089	0.032
0.55	234	0.3625	0.3264	0.0309
0.55	246	0.2466	0.3845	0.0304
0.65	42	-0.5848	0.2603	0.0322
0.65	138	0.1575	0.3524	0.0302
0.65	150	-0.2666	0.34	0.0305
0.65	198	-0.7193	0.2142	0.0333
0.65	222	-0.0782	0.2889	0.03
0.65	234	-0.2298	0.3028	0.0303
0.65	246	-0.1016	0.3523	0.0301
0.75	198	0.1723	0.3627	0.0302
0.75	210	0.8348	0.1941	0.0343
0.75	222	-0.2191	0.3754	0.0303
0.75	234	0.3792	0.25	0.0309
0.75	246	-0.0903	0.305	0.0301
0.85	210	0.5239	0.3064	0.0318
0.85	222	-0.3309	0.3213	0.0307
0.85	234	0.3193	0.3006	0.0307
0.85	246	-0.2278	0.393	0.0303
0.35	30	0.0572	0.2794	0.03
0.35	42	0.2007	0.2844	0.0303
0.45	30	0.0487	0.2555	0.03
0.45	54	0.0474	0.2876	0.03
0.45	222	0.0555	0.2436	0.03
0.45	234	-0.0653	0.258	0.03
0.55	18	-0.4847	0.2657	0.0315
0.55	42	-0.2363	0.227	0.0304
0.55	126	0.0686	0.2569	0.03
0.55	138	0.0948	0.2257	0.0301
0.55	150	0.2813	0.2582	0.0305
0.55	162	-0.1216	0.2614	0.0301
0.55	210	0.3308	0.2126	0.0307
0.55	222	0.4648	0.2126	0.0314
0.55	234	-0.2436	0.2274	0.0304
0.55	246	-0.2906	0.267	0.0306
0.65	126	-0.0309	0.2577	0.03
0.65	138	0.1911	0.2391	0.0302
0.65	150	0.1038	0.2316	0.0301
0.65	162	0.3093	0.2489	0.0306
0.65	210	-0.2339	0.24	0.0304
0.65	222	-0.1912	0.2219	0.0302
0.65	234	-0.0563	0.2121	0.03
0.65	246	0.2042	0.25	0.0303
0.75	138	0.3219	0.2717	0.0307
0.75	210	-0.1685	0.2298	0.0302
0.75	222	-0.2384	0.2164	0.0304
0.75	234	-0.2221	0.2155	0.0303
0.85	138	-0.1895	0.2528	0.0302
0.85	222	-0.0566	0.2342	0.03
0.85	234	-0.1941	0.2407	0.0303