CLAS Physics Database

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Measurement E151M3386

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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 :	1205 GeV
ε :	0.9724
E_beam :	2.999 GeV
ε_L:	1.257

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	-0.0011	0.2546	0.03
0.45	294	-0.1588	0.2439	0.0302
0.55	282	0.0891	0.247	0.0301
0.55	294	0.1086	0.2444	0.0301
0.65	270	-0.046	0.2326	0.03
0.65	282	-0.0083	0.2435	0.03
0.65	294	-0.0424	0.2007	0.03
0.75	66	0.1382	0.2623	0.0301
0.75	78	-0.0617	0.2234	0.03
0.75	90	0.1307	0.2137	0.0301
0.75	270	0.0586	0.2297	0.03
0.75	282	0.0853	0.2095	0.03
0.75	294	-0.2725	0.2217	0.0305
0.85	54	0.1999	0.2549	0.0303
0.85	66	-0.2196	0.2062	0.0303
0.85	78	0.1327	0.1919	0.0301
0.85	90	0.1381	0.1878	0.0301
0.85	102	0.3281	0.1877	0.0307
0.85	258	-0.3071	0.2621	0.0306
0.85	270	-0.1726	0.2384	0.0302
0.85	282	-0.1551	0.2315	0.0302
0.85	294	0.5722	0.2132	0.0321
0.95	30	-0.3633	0.2408	0.0309
0.95	54	0.3172	0.2449	0.0307
0.95	66	0.0281	0.2347	0.03
0.95	78	-0.2849	0.2082	0.0305
0.95	90	0.4612	0.2107	0.0314
0.95	102	0.1152	0.2439	0.0301
0.95	114	-0.3425	0.2264	0.0308