CLAS Physics Database

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Measurement E151M1647

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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 :	0.0205 GeV²
W :	1565 GeV
ε :	0.6388
E_beam :	1.3383 GeV
ε_L:	0.0183

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	30	-0.2176	0.8557	0.0327
0.45	42	-0.7628	0.6601	0.0837
0.55	42	0.1616	0.9004	0.0315
0.55	210	-0.8498	0.882	0.0591
0.55	222	0.2095	0.9323	0.0325
0.55	234	-1.1107	0.8285	0.073
0.65	138	0.9368	0.8211	0.0637
0.65	162	-1.356	0.9431	0.0866
0.65	210	-0.3894	0.9801	0.038
0.65	222	0.0028	0.8911	0.03
0.65	234	0.9889	0.8345	0.0664
0.75	222	-1.4103	0.9098	0.0897
0.75	234	1.7954	0.7935	0.1117
0.75	246	0.3079	0.9614	0.0352
0.85	138	-0.0797	0.8942	0.0304
0.85	150	-0.8566	0.9229	0.0595
0.85	210	-0.2157	0.8968	0.0327
0.85	234	0.2043	0.9093	0.0324
0.45	54	-2.139	1.013	0.1279
0.45	234	-2.0972	0.7742	0.1256
0.55	222	0.2001	0.9865	0.0322
0.55	234	0.2547	1.1784	0.0335
0.65	138	-1.0586	1.2323	0.0685
0.65	210	-1.1317	0.9152	0.0723
0.65	222	1.0182	1.2392	0.0664
0.65	234	-0.9093	1.0029	0.0608
0.75	210	-1.2257	0.9329	0.0773
0.75	222	-1.1398	0.9917	0.0727
0.75	234	-0.2581	0.9566	0.0335
0.85	222	-0.0891	1.1083	0.0304
0.85	234	0.2195	1.1945	0.0326