CLAS Physics Database

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Measurement E151M3192

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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 :	0.2445 GeV²
W :	1265 GeV
ε :	0.9385
E_beam :	2.2596 GeV
ε_L:	0.869

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	282	0.3263	0.2368	0.0307
0.65	282	-0.2356	0.2576	0.0304
0.75	90	0.3306	0.2407	0.0307
0.75	102	0.056	0.2556	0.03
0.75	270	-0.4328	0.2403	0.0312
0.75	282	-0.2739	0.2243	0.0305
0.75	294	-0.4832	0.2483	0.0315
0.85	270	0.1524	0.2429	0.0302
0.85	282	-0.0703	0.2167	0.03
0.85	294	-0.1739	0.2097	0.0302
0.95	78	-0.1878	0.2462	0.0302
0.95	102	0.2305	0.0301
0.25	66	0.2511	0.2517	0.0304
0.65	270	-0.0616	0.2331	0.03
0.65	282	0.0127	0.2329	0.03
0.75	78	-0.5035	0.2102	0.0316
0.75	90	0.1493	0.2411	0.0301
0.75	270	-0.0326	0.2211	0.03
0.75	282	-0.0768	0.2244	0.03
0.85	78	-0.1309	0.2486	0.0301
0.85	90	0.2077	0.2105	0.0303
0.85	102	-0.1001	0.2362	0.0301
0.85	114	0.2888	0.2515	0.0306
0.85	246	0.1581	0.2169	0.0302
0.85	258	-0.0406	0.2468	0.03
0.85	282	0.1509	0.2206	0.0302
0.95	270	-0.1171	0.2616	0.0301