CLAS Physics Database

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Measurement E151M411

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

Q² :	0.0415 GeV²
W :	1535 GeV
ε :	0.6677
E_beam :	1.3383 GeV
ε_L:	0.0424

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_UL,
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_UL	Data errors	Systematic errors
0.55	138	-1.2036	0.5679	0.0803
0.55	210	0.5241	0.7166	0.0442
0.55	222	0.8433	0.647	0.0602
0.55	234	1.0138	0.6224	0.0696
0.55	246	1.2036	0.5438	0.0803
0.65	138	-0.8396	0.5916	0.06
0.65	150	-0.6076	0.5951	0.0481
0.65	162	-1.0004	0.655	0.0688
0.65	222	-0.2844	0.5332	0.0348
0.65	234	-0.2387	0.5376	0.0334
0.65	246	1.048	0.666	0.0715
0.75	222	2.0519	0.4788	0.1305
0.75	234	-0.4797	0.5544	0.0422
0.75	246	-1.0809	0.5432	0.0733
0.85	126	-0.493	0.6898	0.0428
0.85	210	-0.1744	0.6865	0.0319
0.85	222	0.1038	0.6209	0.0307
0.85	234	1.2071	0.486	0.0805
0.85	246	0.4356	0.5083	0.0403
0.45	30	2.0265	1.3716	0.1257
0.45	234	3.7071	3.7071	0.2252
0.55	126	-1.5355	0.5582	0.0972
0.55	138	-0.8833	0.7128	0.0611
0.55	210	2.2368	1.2179	0.138
0.55	222	0.4479	1.0131	0.0403
0.55	234	-0.873	0.634	0.0605
0.55	246	-0.1481	0.7639	0.0313
0.65	150	-1.3831	0.623	0.0885
0.65	210	0.8361	0.9997	0.0586
0.65	222	0.176	1.0049	0.0318
0.65	234	0.1238	0.861	0.0309
0.65	246	-0.041	0.9635	0.0301
0.75	162	-0.8389	0.7495	0.0588
0.75	210	-0.9948	0.6849	0.067
0.75	222	0.2149	0.9969	0.0327
0.75	234	-0.386	0.6704	0.038
0.75	246	1.2433	1.0834	0.0807
0.85	210	-0.748	0.6316	0.0541
0.85	222	0.5734	0.8285	0.0457
0.85	234	-1.3738	0.4159	0.088
0.85	246	0.1862	0.7266	0.032
0.85	258	0.4152	1.1299	0.0391
0.95	234	0.4108	1.0052	0.0389
0.95	246	-0.022	0.8179	0.03