CLAS Physics Database

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Measurement E151M3525

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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 :	0.496 GeV²
W :	1565 GeV
ε :	0.8672
E_beam :	2.999 GeV
ε_L:	0.3553

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	90	-0.1837	0.249	0.0302
0.65	102	0.0505	0.2347	0.03
0.65	114	-0.1828	0.2635	0.0302
0.65	246	0.2092	0.2679	0.0303
0.75	66	0.4638	0.2294	0.0314
0.75	102	0.164	0.2384	0.0302
0.75	222	-0.3412	0.2383	0.0308
0.75	234	-0.6082	0.1676	0.0324
0.75	246	0.0291	0.251	0.03
0.85	54	0.2625	0.2678	0.0305
0.85	210	-0.0251	0.2592	0.03
0.85	222	-0.347	0.2352	0.0308
0.85	234	0.0009	0.2391	0.03
0.85	246	0.1597	0.2166	0.0302
0.85	258	-0.2281	0.2175	0.0303
0.85	270	-0.259	0.2482	0.0304
0.85	282	-0.212	0.2457	0.0303
0.85	294	-0.1741	0.2717	0.0302
0.95	222	0.0576	0.2512	0.03
0.95	234	0.1939	0.2588	0.0302
0.95	246	0.0338	0.23	0.03
0.95	258	-0.3997	0.2518	0.031
0.95	270	-0.4456	0.2424	0.0313
0.95	282	-0.1605	0.1916	0.0302
0.95	294	0.1175	0.1946	0.0301
0.95	306	-0.1061	0.2343	0.0301
0.95	318	-0.0519	0.2518	0.03