CLAS Physics Database

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Measurement E151M2365

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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_LL,

Beam: e, polarization: longitudinal
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π⁺n, polarization: none

Q² :	0.348 GeV²
W :	1715 GeV
ε :	0.8352
E_beam :	2.999 GeV
ε_L:	0.1764

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_LL,
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_LL	Stat. error	Syst. error
0.65	102	-0.5972	1.0325	0.0527
0.65	114	-0.1299	1.0675	0.0314
0.65	138	1.1647	0.8647	0.0896
0.65	222	1.5438	0.9946	0.1159
0.75	78	1.2371	0.7461	0.0946
0.75	114	0.8562	0.9378	0.069
0.75	186	-0.249	0.9976	0.035
0.75	198	-0.5749	0.961	0.0514
0.75	210	-2.9812	2.9812	0.2182
0.75	234	0.0492	1.0098	0.0302
0.75	246	1.5241	0.8233	0.1145
0.85	66	-0.62	0.8283	0.054
0.85	78	-2.0109	0.8589	0.1489
0.85	90	0.7575	0.8643	0.0626
0.85	102	-1.2521	0.9537	0.0956
0.85	186	-0.1516	1.0535	0.032
0.85	198	0.8331	0.8254	0.0674
0.85	210	-0.7286	0.7841	0.0608
0.85	222	0.3011	0.7151	0.0371
0.85	234	0.7892	0.7085	0.0646
0.85	246	-1.0777	0.9047	0.0837
0.85	258	0.4216	0.9963	0.0428
0.95	186	0.8635	0.8486	0.0694
0.95	198	1.3232	0.663	0.1005
0.95	210	0.8188	0.9169	0.0665
0.95	222	-0.897	0.7234	0.0716
0.95	234	0.2025	0.7892	0.0334
0.95	246	-0.8995	0.6898	0.0718
0.95	258	0.3517	0.706	0.0394
0.95	270	0.6867	0.7465	0.0581
0.95	282	0.5452	0.7711	0.0496