CLAS Physics Database

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Measurement E151M3090

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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 :	0.1435 GeV²
W :	1565 GeV
ε :	0.8118
E_beam :	1.9889 GeV
ε_L:	0.1399

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	282	0.2821	0.27	0.0305
0.55	282	-0.0472	0.274	0.03
0.65	114	0.0297	0.2553	0.03
0.65	126	0.0917	0.2676	0.0301
0.65	234	0.3628	0.2418	0.0309
0.65	294	-0.2	0.2062	0.0303
0.75	114	-0.1973	0.2401	0.0303
0.75	126	0.3234	0.2489	0.0307
0.75	138	0.4537	0.2389	0.0313
0.75	198	0.4111	0.2454	0.0311
0.75	210	0.0636	0.2351	0.03
0.75	222	0.1891	0.2172	0.0302
0.75	234	-0.2216	0.2498	0.0303
0.75	246	-0.1287	0.2702	0.0301
0.75	294	-0.3781	0.245	0.0309
0.85	90	0.318	0.2271	0.0307
0.85	126	0.0813	0.2727	0.03
0.85	210	-0.043	0.2759	0.03
0.85	222	-0.0651	0.218	0.03
0.85	246	-0.1865	0.1937	0.0302
0.85	258	-0.4849	0.2561	0.0315
0.95	90	0.2878	0.2493	0.0305
0.95	102	-0.0758	0.2827	0.03
0.95	222	0.1992	0.2639	0.0303
0.95	234	-0.3106	0.251	0.0306
0.95	246	-0.09	0.2791	0.0301
0.95	258	-0.6738	0.1866	0.0329