CLAS Physics Database

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Measurement E151M2164

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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 :	0.2445 GeV²
W :	1205 GeV
ε :	0.9724
E_beam :	2.999 GeV
ε_L:	1.257

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
0.45	282	0.3798	0.677	0.0407
0.45	294	-1.1894	0.6058	0.0913
0.55	282	0.5453	0.6607	0.0496
0.55	294	1.4702	0.5865	0.1107
0.65	270	0.0144	0.6458	0.03
0.65	282	-0.5342	0.66	0.049
0.65	294	-0.8829	0.5135	0.0707
0.75	66	0.8397	0.7268	0.0679
0.75	78	-0.6163	0.6143	0.0538
0.75	90	0.474	0.5838	0.0456
0.75	270	-0.9298	0.5907	0.0738
0.75	282	0.3511	0.5702	0.0393
0.75	294	0.5831	0.6135	0.0518
0.85	54	0.0849	0.6687	0.0306
0.85	66	-0.6031	0.5452	0.053
0.85	78	1.0252	0.5196	0.0802
0.85	90	0.2999	0.5109	0.0371
0.85	102	0.3037	0.5453	0.0372
0.85	258	0.036	0.7092	0.0301
0.85	270	-0.3561	0.6852	0.0396
0.85	282	0.3404	0.6211	0.0388
0.85	294	0.3871	0.6324	0.0411
0.95	30	-0.4341	0.6826	0.0435
0.95	54	0.8411	0.5819	0.068
0.95	66	1.0845	0.571	0.0842
0.95	78	-0.4606	0.5537	0.0449
0.95	90	0.1571	0.6035	0.0321
0.95	102	-0.2084	0.6494	0.0336
0.95	114	-0.5907	0.602	0.0523