CLAS Physics Database

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Measurement E151M864

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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 :	0.1205 GeV²
W :	1535 GeV
ε :	0.882
E_beam :	2.2596 GeV
ε_L:	0.1469

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
0.35	78	-0.0258	0.8763	0.0301
0.35	282	0.3741	0.7928	0.0457
0.45	282	0.2121	0.7355	0.0358
0.55	114	1.0041	0.9658	0.0974
0.55	126	-0.1593	0.9383	0.0334
0.55	270	0.9663	0.8356	0.0941
0.55	282	-0.5758	0.6657	0.061
0.65	126	0.2011	0.8299	0.0353
0.65	234	-0.3083	0.7517	0.0413
0.75	114	0.3351	1.0964	0.0431
0.75	198	0.5687	0.9509	0.0605
0.75	210	0.6568	1.0323	0.0676
0.75	222	2.8521	2.8521	0.2649
0.75	246	-0.7534	0.6964	0.0757
0.75	294	-0.3391	0.8184	0.0434
0.85	78	1.4874	1.1421	0.1405
0.85	90	-0.2431	1.0504	0.0375
0.85	102	-0.09	1.1778	0.0311
0.85	126	0.2058	1.1994	0.0355
0.85	138	-0.522	1.1722	0.0568
0.85	222	-0.1423	0.818	0.0327
0.85	234	1.0083	1.0086	0.0978
0.85	246	-0.6568	0.8941	0.0676
0.95	234	1.8032	2.7189	0.1691
0.95	246	-3.4894	2.2331	0.3234
0.95	270	4.2014	2.785	0.3889
0.25	78	-0.0329	0.6565	0.0301
0.35	78	0.5261	0.7229	0.0457
0.45	270	-0.0112	0.6667	0.03
0.45	282	0.3384	0.6062	0.0373
0.55	126	-1.3423	0.5747	0.0931
0.55	282	1.3843	0.7373	0.0957
0.65	114	-0.6926	0.6152	0.0545
0.65	126	-0.8607	0.6705	0.064
0.65	210	0.7271	0.8339	0.0564
0.65	222	0.215	0.7752	0.0332
0.65	294	0.9623	0.7379	0.0699
0.75	102	-1.2394	0.5814	0.0867
0.75	114	-1.4257	0.44	0.0983
0.75	126	-0.6826	0.5604	0.0539
0.75	138	0.9672	0.8168	0.0702
0.75	222	0.4712	0.8247	0.0431
0.75	234	0.4209	0.7127	0.0408
0.75	246	0.1761	0.5881	0.0321
0.85	78	0.0512	0.7737	0.0302
0.85	90	-0.1461	0.6653	0.0315
0.85	210	0.7845	0.8547	0.0596
0.85	222	0.4938	0.7534	0.0442
0.85	234	-0.6395	0.6191	0.0516
0.85	246	2.0588	0.7425	0.1384
0.85	258	0.673	0.7617	0.0534
0.95	222	2.2436	1.4017	0.1503
0.95	246	-1.1583	1.1319	0.0817
0.95	258	1.2737	1.2532	0.0888
0.95	270	2.2854	1.2297	0.1529