CLAS Physics Database

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Measurement E151M2857

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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 :	0.0593 GeV²
W :	1535 GeV
ε :	0.6517
E_beam :	1.3383 GeV
ε_L:	0.0577

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
0.55	150	0.103	0.2622	0.0301
0.55	162	0.3091	0.279	0.0306
0.55	210	-0.179	0.3456	0.0302
0.55	222	-0.0781	0.2834	0.03
0.55	234	0.4521	0.2528	0.0313
0.55	246	0.1163	0.2238	0.0301
0.65	126	0.027	0.2674	0.03
0.65	138	0.0491	0.265	0.03
0.65	150	0.237	0.2401	0.0304
0.65	162	-0.0107	0.264	0.03
0.65	210	0.0098	0.2546	0.03
0.65	222	-0.0093	0.2271	0.03
0.65	234	-0.29	0.2075	0.0306
0.65	246	0.5282	0.2501	0.0318
0.75	138	-0.1894	0.2221	0.0302
0.75	150	0.0623	0.2531	0.03
0.75	222	0.3648	0.2657	0.0309
0.75	234	-0.1767	0.2337	0.0302
0.75	246	-0.1638	0.2009	0.0302
0.85	126	-0.3443	0.2688	0.0308
0.85	222	0.1094	0.2259	0.0301
0.85	234	0.4663	0.2174	0.0314
0.85	246	-0.2625	0.2158	0.0305
0.85	258	-0.1894	0.2591	0.0302
0.95	246	0.0368	0.2674	0.03
0.55	258	0.4885	0.3612	0.0316
0.65	138	0.8756	0.1764	0.0347
0.65	162	0.7878	0.1668	0.0339
0.65	210	-0.7189	0.1787	0.0333
0.65	222	-0.2023	0.3034	0.0303
0.65	234	0.0975	0.3423	0.0301
0.65	246	-0.397	0.3292	0.031
0.75	222	0.1302	0.3444	0.0301
0.75	234	0.1426	0.3383	0.0301
0.75	246	0.2085	0.357	0.0303
0.75	258	-0.3674	0.2852	0.0309
0.85	222	0.2503	0.3476	0.0304
0.85	234	0.1002	0.3248	0.0301
0.85	246	-0.754	0.1433	0.0336
0.85	258	-0.2857	0.4131	0.0305