CLAS Physics Database

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Measurement E151M3176

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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 :	0.0844 GeV²
W :	1235 GeV
ε :	0.9728
E_beam :	2.2596 GeV
ε_L:	0.544

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	78	0.0359	0.2018	0.03
0.55	78	-0.1617	0.2292	0.0302
0.65	270	0.2366	0.2162	0.0304
0.65	282	0.1235	0.2427	0.0301
0.75	258	-0.2213	0.2262	0.0303
0.75	270	0.0417	0.2053	0.03
0.85	114	0.2581	0.2134	0.0304
0.85	126	-0.1714	0.2134	0.0302
0.85	138	0.308	0.2337	0.0306
0.95	126	0.1708	0.2431	0.0302
0.95	138	0.4899	0.1897	0.0316
0.95	150	-0.0382	0.2177	0.03
0.95	162	-0.2077	0.2798	0.0303
0.35	78	0.0982	0.2622	0.0301
0.45	78	-0.0223	0.1826	0.03
0.55	78	0.0196	0.2	0.03
0.55	90	-0.5388	0.2262	0.0319
0.55	270	0.4131	0.2189	0.0311
0.65	258	-0.2723	0.237	0.0305
0.65	270	-0.047	0.1756	0.03
0.65	282	-0.3271	0.2179	0.0307
0.75	114	-0.3192	0.2276	0.0307
0.75	246	-0.3309	0.2429	0.0307
0.75	258	-0.1099	0.1886	0.0301
0.75	270	-0.2618	0.1961	0.0305
0.85	102	-0.1529	0.2064	0.0302
0.85	114	0.094	0.2153	0.0301
0.85	126	0.0877	0.1759	0.0301
0.85	138	0.3929	0.1774	0.031
0.85	150	-0.0963	0.2144	0.0301
0.85	234	0.064	0.2392	0.03
0.85	246	-0.2532	0.2266	0.0304
0.85	258	-0.1664	0.1821	0.0302
0.85	270	-0.2049	0.222	0.0303
0.95	114	0.0474	0.2295	0.03
0.95	126	0.2222	0.2035	0.0303
0.95	138	0.185	0.2278	0.0302
0.95	150	-0.2538	0.192	0.0304
0.95	162	0.1182	0.2299	0.0301
0.95	174	-0.0611	0.1959	0.03
0.95	198	0.3022	0.2351	0.0306