CLAS Physics Database

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Measurement E151M34

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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 :	0.0844 GeV²
W :	1235 GeV
ε :	0.8524
E_beam :	1.0539 GeV
ε_L:	0.4767

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	Data errors	Systematic errors
0.05	42	-0.016	0.5124	0.0301
0.15	30	0.0446	0.6102	0.0304
0.15	42	0.1544	0.484	0.0348
0.15	54	1.4137	0.6327	0.1636
0.25	42	-0.0179	0.5584	0.0301
0.35	282	-0.4641	0.474	0.0607
0.35	294	-0.8522	0.4337	0.1015
0.45	270	-0.8388	0.3373	0.1
0.45	282	-0.1588	0.394	0.035
0.45	294	0.218	0.4563	0.0389
0.55	258	0.3635	0.4913	0.0511
0.55	270	-0.2531	0.2989	0.0416
0.55	282	0.2726	0.2938	0.0432
0.55	294	-0.3593	0.4212	0.0507
0.65	246	-0.9259	0.4541	0.1095
0.65	258	-0.3407	0.3126	0.049
0.65	270	-0.3984	0.2643	0.0544
0.65	282	-0.0877	0.3104	0.0316
0.65	294	-0.4934	0.3402	0.0636
0.75	246	0.8201	0.4187	0.098
0.75	258	0.0047	0.3462	0.03
0.75	270	-0.1755	0.2824	0.036
0.75	282	-0.693	0.2953	0.0844
0.75	294	-0.6573	0.4126	0.0806
0.85	114	0.5013	0.4918	0.0644
0.85	126	0.6934	0.4914	0.0844
0.85	138	-0.4199	0.3393	0.0564
0.85	150	0.6399	0.4875	0.0787
0.85	162	0.8276	0.3814	0.0988
0.85	174	0.9172	0.3967	0.1086
0.85	186	0.2677	0.4733	0.0428
0.85	198	-0.1819	0.3799	0.0364
0.85	210	-0.4372	0.3935	0.0581
0.85	222	-0.4268	0.4858	0.0571
0.85	246	-0.7204	0.3791	0.0873
0.85	258	-0.3292	0.4669	0.048
0.85	270	0.3118	0.3861	0.0465
0.85	282	-0.1901	0.3491	0.037
0.95	126	0.2939	0.4035	0.0449
0.95	138	0.4807	0.3866	0.0624
0.95	150	0.5865	0.3034	0.0732
0.95	162	0.7531	0.3297	0.0908
0.95	174	-0.2429	0.3021	0.0408
0.95	186	-0.039	0.3586	0.0303
0.95	198	0.2083	0.3632	0.0382
0.95	210	0.1433	0.351	0.0341
0.95	222	0.1545	0.4002	0.0348
0.95	234	0.0732	0.4004	0.0311