CLAS Physics Database

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Measurement E151M3454

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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 :	0.5925 GeV²
W :	1385 GeV
ε :	0.9026
E_beam :	2.999 GeV
ε_L:	0.7085

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	78	0.3183	0.2291	0.0307
0.55	90	0.3985	0.2459	0.031
0.55	270	-0.1787	0.2639	0.0302
0.65	78	0.219	0.2664	0.0303
0.65	90	-0.435	0.2377	0.0312
0.65	102	0.3972	0.2588	0.031
0.65	258	-0.5055	0.2286	0.0317
0.75	78	0.2922	0.2557	0.0306
0.75	90	0.2362	0.2187	0.0304
0.75	102	-0.189	0.2678	0.0302
0.75	258	0.0992	0.2863	0.0301
0.75	282	-0.4111	0.252	0.0311
0.75	294	0.2333	0.2433	0.0304
0.85	78	-0.0111	0.2804	0.03
0.85	90	-0.0834	0.267	0.03
0.85	102	-0.0226	0.2641	0.03
0.85	114	0.0898	0.2651	0.0301
0.85	222	-0.4307	0.2455	0.0312
0.85	234	0.1182	0.2527	0.0301
0.85	246	-0.2561	0.2407	0.0304
0.85	270	-0.5582	0.2021	0.032
0.85	282	0.0361	0.2175	0.03
0.85	294	0.1561	0.2392	0.0302
0.85	306	-0.0747	0.2332	0.03
0.85	318	0.0715	0.2509	0.03
0.85	330	0.1736	0.2622	0.0302
0.95	222	-0.3943	0.2472	0.031
0.95	258	-0.1258	0.2677	0.0301
0.95	270	0.0754	0.239	0.03
0.95	282	-0.0671	0.2673	0.03