CLAS Physics Database

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Measurement E151M2449

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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 :	0.0171 GeV²
W :	1205 GeV
ε :	0.9307
E_beam :	1.0539 GeV
ε_L:	0.1621

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
0.35	42	0.2411	0.2442	0.0304
0.55	258	-0.1941	0.2101	0.0303
0.55	270	0.228	0.1862	0.0303
0.55	282	0.0352	0.1992	0.03
0.65	246	0.0672	0.2386	0.03
0.65	258	-0.2589	0.1611	0.0304
0.65	270	0.2576	0.1636	0.0304
0.75	162	0.1505	0.2044	0.0302
0.75	174	0.3146	0.1824	0.0307
0.75	186	-0.2352	0.2211	0.0304
0.75	198	-0.2229	0.2215	0.0303
0.75	210	-0.0996	0.2425	0.0301
0.75	234	0.2105	0.2321	0.0303
0.75	246	0.0985	0.2167	0.0301
0.75	258	-0.1718	0.2158	0.0302
0.75	270	-0.0714	0.238	0.03
0.85	162	0.354	0.1813	0.0308
0.85	174	-0.0065	0.1836	0.03
0.85	186	0.1008	0.2403	0.0301
0.85	198	0.139	0.2134	0.0301
0.85	210	-0.3827	0.2336	0.031