CLAS Physics Database

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Measurement E151M3140

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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 :	0.0291 GeV²
W :	1685 GeV
ε :	0.7618
E_beam :	1.9889 GeV
ε_L:	0.0198

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	78	0.0657	0.2582	0.03
0.45	18	-0.3384	0.25	0.0308
0.45	78	0.0236	0.2486	0.03
0.45	270	-0.2085	0.2531	0.0303
0.45	282	-0.1694	0.2751	0.0302
0.55	78	-0.1746	0.2593	0.0302
0.55	126	0.2885	0.237	0.0306
0.55	138	0.1545	0.2522	0.0302
0.55	222	-0.1696	0.2696	0.0302
0.55	270	0.1192	0.2696	0.0301
0.65	138	0.1154	0.2605	0.0301
0.65	150	0.0689	0.2831	0.03
0.65	198	0.2947	0.2536	0.0306
0.65	210	-0.0263	0.2419	0.03
0.65	222	0.286	0.2462	0.0305
0.65	282	0.2439	0.276	0.0304
0.75	66	-0.4454	0.2474	0.0313
0.75	198	-0.5089	0.238	0.0317
0.75	210	0.088	0.236	0.0301
0.75	222	-0.5405	0.2033	0.0319
0.75	258	0.6021	0.201	0.0323
0.75	270	-0.1409	0.2054	0.0301
0.75	282	0.4619	0.243	0.0314
0.85	114	0.1467	0.2706	0.0301
0.85	126	-0.2804	0.2687	0.0305
0.85	198	0.4327	0.2549	0.0312
0.85	210	-0.2658	0.2453	0.0305
0.85	222	0.0561	0.2762	0.03