CLAS Physics Database

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Measurement E151M2110

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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 :	0.101 GeV²
W :	1595 GeV
ε :	0.8572
E_beam :	2.2596 GeV
ε_L:	0.0979

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	114	-2.4173	2.4173	0.2242
0.65	126	1.5353	0.769	0.1443
0.65	210	0.663	0.8267	0.0679
0.65	222	-0.2781	0.867	0.0394
0.75	126	0.6144	1.0546	0.0639
0.75	138	0.1981	1.0075	0.0351
0.75	282	-0.5678	0.8441	0.0602
0.85	90	0.0509	1.0231	0.0304
0.85	210	-0.6704	0.9491	0.0685
0.85	222	-1.5029	0.9332	0.1413
0.85	246	0.8012	0.835	0.0795
0.35	282	-0.3948	0.7889	0.0395
0.45	270	0.6262	0.7029	0.0506
0.45	282	0.6375	0.8134	0.0512
0.55	270	1.3173	0.7864	0.0908
0.65	102	-0.9113	0.8417	0.0664
0.65	126	-0.5769	0.8323	0.048
0.75	126	0.6468	0.8942	0.0517
0.75	210	-1.585	0.9316	0.1074
0.75	222	-0.2918	0.9036	0.0355
0.75	282	-0.3533	0.9125	0.0378
0.75	294	0.0644	0.8633	0.0303
0.85	90	0.2784	0.7737	0.035
0.85	102	-0.8059	0.8611	0.0604
0.85	114	1.7835	0.8879	0.1198
0.85	210	1.1449	1.0281	0.0803
0.85	222	-0.0475	1.0208	0.0302
0.85	234	-1.2355	0.8164	0.0858
0.85	246	-0.2708	0.9527	0.0348
0.95	234	-1.0627	1.5148	0.0754
0.95	246	-2.9753	1.3604	0.1959