CLAS Physics Database

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Measurement E151M896

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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 :	0.0496 GeV²
W :	1625 GeV
ε :	0.8561
E_beam :	2.2596 GeV
ε_L:	0.0457

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
0.45	78	0.1312	0.7547	0.0324
0.45	102	0.5877	0.8615	0.062
0.45	258	-0.001	0.6617	0.03
0.45	270	0.1915	0.6288	0.0348
0.55	258	2.1512	2.1512	0.2008
0.55	270	-0.1491	0.5502	0.033
0.65	114	1.0816	0.8076	0.1042
0.65	126	-1.3989	0.6912	0.1325
0.65	138	-1.0357	0.7443	0.1002
0.65	210	-0.1476	0.7229	0.0329
0.65	282	-0.589	0.6289	0.0621
0.75	126	-1.4514	0.6881	0.1373
0.75	198	0.9912	0.9154	0.0963
0.75	210	0.8875	0.8395	0.0872
0.75	222	0.4098	0.7727	0.0483
0.75	270	-0.9178	0.4735	0.0899
0.75	282	0.6923	0.5577	0.0706
0.85	90	-0.6093	0.9011	0.0637
0.85	102	-1.5675	0.7707	0.1477
0.85	114	-1.1828	0.6963	0.1132
0.85	126	-0.6208	0.9119	0.0647
0.85	198	-0.1165	0.8548	0.0319
0.85	222	-0.8284	0.6652	0.0821
0.85	246	0.4436	0.892	0.0508
0.35	78	-1.1289	0.5034	0.0799
0.45	126	0.3771	0.8177	0.0389
0.45	270	-0.4306	0.6866	0.0412
0.55	138	-0.7923	0.7217	0.06
0.55	246	0.42	0.8077	0.0407
0.55	258	0.7879	0.7444	0.0598
0.55	270	1.1113	0.6747	0.0789
0.55	282	-1.4196	0.5277	0.0979
0.65	78	-0.3557	0.6687	0.038
0.65	114	0.2835	0.6997	0.0353
0.65	126	-0.5338	0.5716	0.0461
0.65	198	-0.2003	0.8518	0.0328
0.65	210	1.466	0.7559	0.1008
0.65	222	0.5967	0.8403	0.0493
0.65	282	0.1897	0.6975	0.0325
0.65	294	0.166	0.6982	0.0319
0.75	66	-0.4573	0.5652	0.0424
0.75	210	-0.8521	0.7689	0.0635
0.75	222	0.8952	0.796	0.066
0.75	270	0.8504	0.7428	0.0634
0.75	282	1.088	0.7351	0.0774
0.75	294	-0.6101	0.6343	0.05
0.85	102	-0.6799	0.6449	0.0538
0.85	114	0.2672	0.7771	0.0347
0.85	198	0.7926	0.9055	0.06
0.85	210	0.5467	0.7471	0.0468
0.85	270	0.0253	0.7846	0.03