CLAS Physics Database

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Measurement E151M1750

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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 :	0.2915 GeV²
W :	1325 GeV
ε :	0.8864
E_beam :	1.9889 GeV
ε_L:	0.6685

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
0.65	270	-1.7488	0.4947	0.1101
0.65	282	1.2965	0.6477	0.0841
0.75	90	1.07	0.6696	0.0714
0.75	102	0.1472	0.6196	0.0313
0.75	258	-0.0781	0.6335	0.0304
0.75	270	0.0412	0.6971	0.0301
0.75	282	-0.1683	0.7129	0.0317
0.75	294	0.9683	0.5243	0.0659
0.85	78	-0.4546	0.5349	0.0407
0.85	90	0.7465	0.5854	0.0543
0.85	102	-0.1534	0.6447	0.0314
0.85	114	0.2685	0.6917	0.0341
0.85	126	-0.443	0.7203	0.0403
0.85	234	0.7061	0.6162	0.0523
0.85	246	-0.1492	0.7795	0.0313
0.85	258	0.2665	0.5462	0.0341
0.85	270	0.4962	0.6702	0.0425
0.85	282	-0.0174	0.6263	0.03
0.85	294	0.6566	0.6779	0.0498
0.85	306	-0.4867	0.5806	0.0421
0.95	90	-0.2235	0.6677	0.0329
0.95	102	-0.2986	0.6355	0.035
0.95	114	0.0152	0.7918	0.03
0.95	126	1.277	0.6064	0.083
0.95	246	0.2643	0.6661	0.034
0.95	270	-0.3532	0.5321	0.0369
0.95	282	0.8902	0.5511	0.0617
0.95	294	0.1495	0.5466	0.0313
0.95	306	0.99	0.5907	0.0671