CLAS Physics Database

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Measurement E151M1343

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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 :	0.1205 GeV²
W :	1355 GeV
ε :	0.6795
E_beam :	1.0539 GeV
ε_L:	0.249

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
0.35	42	1.069	0.9462	0.1242
0.45	258	-0.6374	0.9223	0.0779
0.55	246	0.6111	0.9237	0.0752
0.55	258	-1.7788	0.6588	0.2029
0.55	270	0.1358	0.7348	0.0337
0.65	234	0.3798	0.9167	0.0523
0.65	246	0.3351	0.7446	0.0483
0.65	258	1.0907	0.6167	0.1266
0.65	270	0.6679	0.6051	0.0811
0.75	138	-0.0934	0.805	0.0318
0.75	174	1.8349	0.7305	0.2091
0.75	234	1.1122	0.8601	0.129
0.75	246	0.1402	0.6094	0.0339
0.75	258	0.6469	0.6356	0.0789
0.75	270	-0.4439	0.6238	0.0584
0.75	282	-0.0142	0.6886	0.03
0.85	126	1.2859	0.7752	0.1481
0.85	138	1.2564	0.8038	0.1448
0.85	150	0.948	0.904	0.111
0.85	162	1.4266	0.7712	0.1637
0.85	174	-0.3637	0.8373	0.0508
0.85	246	0.7965	0.7327	0.0947
0.85	258	-0.0507	0.6897	0.0305
0.85	270	0.2964	0.5799	0.0449
0.85	282	1.1132	0.6216	0.1291
0.85	294	0.3992	0.8259	0.0541
0.95	246	-0.5467	0.6853	0.0686