CLAS Physics Database

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Measurement E151M3547

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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 :	0.2915 GeV²
W :	1625 GeV
ε :	0.8836
E_beam :	2.999 GeV
ε_L:	0.2155

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	102	-0.2202	0.2432	0.0303
0.55	90	0.2695	0.2028	0.0305
0.55	102	0.0608	0.2428	0.03
0.55	114	0.0411	0.2219	0.03
0.55	270	0.1433	0.2399	0.0301
0.65	90	0.3056	0.2068	0.0306
0.65	102	-0.0242	0.243	0.03
0.65	114	0.4442	0.1882	0.0313
0.65	126	-0.3174	0.2238	0.0307
0.65	222	0.1927	0.2531	0.0302
0.65	234	0.5868	0.2182	0.0322
0.65	294	-0.0195	0.2431	0.03
0.65	306	0.3005	0.2551	0.0306
0.75	66	0.0545	0.2565	0.03
0.75	78	0.5062	0.2082	0.0317
0.75	102	-0.4107	0.1671	0.0311
0.75	114	0.2187	0.2215	0.0303
0.75	126	-0.2296	0.2402	0.0303
0.75	198	0.0803	0.2686	0.03
0.75	210	0.4462	0.2893	0.0313
0.75	222	-0.2941	0.2016	0.0306
0.75	234	0.2216	0.176	0.0303
0.75	246	0.2018	0.1854	0.0303
0.75	258	-0.1368	0.2642	0.0301
0.75	270	-0.3226	0.2483	0.0307
0.75	306	0.0219	0.2817	0.03
0.85	66	-0.0987	0.1868	0.0301
0.85	78	-0.3194	0.1802	0.0307
0.85	90	0.3622	0.2167	0.0309
0.85	102	-0.1171	0.2671	0.0301
0.85	114	0.1182	0.2525	0.0301
0.85	126	-0.0663	0.2481	0.03
0.85	186	0.3404	0.2269	0.0308
0.85	198	0.1034	0.202	0.0301
0.85	210	0.5109	0.1497	0.0317
0.85	222	0.3035	0.1939	0.0306
0.85	234	0.0367	0.1673	0.03
0.85	246	-0.1333	0.1801	0.0301
0.85	258	0.0861	0.1767	0.03
0.85	270	0.2215	0.2293	0.0303
0.85	282	0.0364	0.2755	0.03
0.95	66	0.2806	0.2573	0.0305
0.95	78	0.1216	0.2315	0.0301
0.95	90	-0.0264	0.269	0.03
0.95	198	-0.0397	0.2365	0.03
0.95	210	-0.2822	0.2217	0.0305
0.95	222	0.0934	0.206	0.0301
0.95	234	-0.2814	0.1763	0.0305
0.95	246	-0.0345	0.193	0.03
0.95	258	-0.0613	0.1776	0.03
0.95	270	0.1341	0.1659	0.0301
0.95	282	0.0637	0.1965	0.03
0.95	294	-0.2089	0.2002	0.0303
0.95	306	0.0014	0.2433	0.03