CLAS Physics Database

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Measurement E151M1918

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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 :	0.0291 GeV²
W :	1685 GeV
ε :	0.7618
E_beam :	1.9889 GeV
ε_L:	0.0198

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	78	0.317	0.7106	0.0356
0.45	18	-0.6252	0.69	0.0483
0.45	78	-0.6499	0.6876	0.0495
0.45	270	-0.1732	0.6681	0.0318
0.45	282	0.4151	0.7193	0.0391
0.55	78	-0.6582	0.6975	0.0499
0.55	126	1.5566	0.5816	0.099
0.55	138	-1.0451	0.6572	0.0701
0.55	222	0.2507	0.7194	0.0336
0.55	270	-0.9138	0.6669	0.063
0.65	138	1.084	0.6812	0.0722
0.65	150	-1.4748	0.6785	0.0943
0.65	198	-0.4209	0.7006	0.0394
0.65	210	-0.081	0.6431	0.0304
0.65	222	-0.459	0.7002	0.0409
0.65	282	0.1373	0.7177	0.0311
0.75	66	-0.5776	0.707	0.0461
0.75	198	-1.1159	0.6516	0.074
0.75	210	-0.9607	0.5955	0.0655
0.75	222	-1.02	0.5793	0.0687
0.75	258	0.3114	0.6624	0.0354
0.75	270	-0.6155	0.5211	0.0479
0.75	282	0.1517	0.686	0.0314
0.85	114	-0.2277	0.7156	0.033
0.85	126	0.0827	0.7281	0.0304
0.85	198	-0.1595	0.7323	0.0315
0.85	210	0.3515	0.6509	0.0368
0.85	222	-0.9375	0.6876	0.0642