CLAS Physics Database

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Measurement E151M1079

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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 :	0.348 GeV²
W :	1565 GeV
ε :	0.8936
E_beam :	2.999 GeV
ε_L:	0.2981

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	Stat. error	Syst. error
0.25	282	0.296	0.9337	0.037
0.35	282	-0.3369	0.7226	0.0388
0.45	90	1.5398	0.8817	0.1165
0.45	114	-1.681	0.6201	0.1265
0.45	282	0.9089	0.8967	0.0729
0.55	90	-0.3588	0.7006	0.0398
0.55	102	-0.3975	0.8153	0.0418
0.55	114	1.4039	0.9153	0.1069
0.65	90	-0.6809	0.5681	0.0581
0.65	102	-0.058	0.7102	0.0303
0.65	114	-0.3465	0.602	0.0393
0.65	126	-1.2125	0.5613	0.0936
0.65	222	0.5168	0.9208	0.0482
0.65	234	2.6667	2.6667	0.1972
0.65	306	0.0466	0.7333	0.0302
0.75	66	0.7878	0.7989	0.0649
0.75	78	-0.7106	0.7705	0.06
0.75	90	-0.4178	0.6447	0.0428
0.75	102	0.3504	0.6317	0.0394
0.75	114	-0.1286	0.5771	0.0314
0.75	126	-0.2435	0.8689	0.0349
0.75	198	-0.1635	0.8808	0.0323
0.75	210	0.1827	0.7458	0.0328
0.75	222	1.473	0.8132	0.1118
0.75	234	-0.3729	0.6558	0.0405
0.75	246	0.2291	0.6279	0.0344
0.75	258	1.1712	0.781	0.0907
0.85	54	-0.7937	0.5586	0.0653
0.85	66	0.1732	0.6465	0.0326
0.85	78	0.3297	0.6417	0.0385
0.85	102	-1.0023	0.5735	0.0792
0.85	114	-0.8449	0.6239	0.0687
0.85	198	0.3748	0.8069	0.0406
0.85	210	-0.3031	0.5733	0.0373
0.85	222	2.6088	2.6088	0.193
0.85	234	-0.6674	0.4701	0.0573
0.85	246	1.4737	0.6482	0.1118
0.85	258	0.6121	0.532	0.0539
0.85	270	-0.2155	0.5027	0.0339
0.85	282	-0.5424	0.5894	0.0497
0.85	294	-1.3681	0.4949	0.1044
0.95	78	-0.2005	0.7885	0.0334
0.95	198	1.4589	0.8941	0.1108
0.95	210	0.8292	0.7593	0.0676
0.95	222	1.1305	0.6841	0.0879
0.95	234	0.7532	0.6139	0.0627
0.95	246	0.2794	0.5963	0.0363
0.95	258	-0.0428	0.5478	0.0302
0.95	270	0.9101	0.5782	0.073
0.95	282	1.0962	0.6736	0.0856
0.95	294	0.4154	0.5268	0.0427
0.95	306	0.1096	0.581	0.0311
0.95	318	-0.3322	0.5278	0.0386