CLAS Physics Database

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Measurement E151M1250

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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 :	1235 GeV
ε :	0.9017
E_beam :	1.0539 GeV
ε_L:	0.2038

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
0.15	42	-0.0071	0.5714	0.03
0.15	54	0.5586	0.6923	0.0698
0.25	30	-0.2796	0.6747	0.0435
0.25	42	0.1306	0.4842	0.0334
0.25	54	0.2745	0.4812	0.0431
0.35	30	0.6932	0.5404	0.0837
0.35	42	-0.0858	0.4365	0.0315
0.35	54	-1.2459	0.4042	0.1437
0.35	66	-0.1893	0.5976	0.0368
0.45	42	0.0477	0.6052	0.0305
0.45	54	0.253	0.5483	0.0414
0.45	258	-0.782	0.5342	0.0932
0.45	270	-0.3869	0.5167	0.053
0.45	282	0.0006	0.4087	0.03
0.55	246	0.0984	0.6103	0.032
0.55	258	0.0704	0.3448	0.031
0.55	270	0.1116	0.3088	0.0325
0.55	282	0.5955	0.3616	0.0736
0.65	234	-0.4094	0.4733	0.0551
0.65	246	0.0015	0.3966	0.03
0.65	258	0.1269	0.2948	0.0332
0.65	270	0.2186	0.2931	0.0388
0.65	282	-0.9347	0.3902	0.1096
0.75	138	0.0386	0.6487	0.0303
0.75	150	-0.2448	0.4981	0.0408
0.75	162	0.4528	0.4903	0.0592
0.75	174	0.4089	0.4772	0.055
0.75	186	0.2009	0.4217	0.0376
0.75	198	0.2068	0.4529	0.038
0.75	222	-0.1887	0.5416	0.0368
0.75	234	0.6111	0.4221	0.0752
0.75	246	0.2797	0.31	0.0435
0.75	258	-0.1162	0.2929	0.0327
0.75	270	-0.018	0.3049	0.0301
0.75	282	0.6786	0.4845	0.0822
0.85	126	-0.4977	0.6323	0.0636
0.85	138	0.508	0.5083	0.0647
0.85	150	0.3324	0.3456	0.048
0.85	162	0.5716	0.3783	0.0711
0.85	174	0.6115	0.3915	0.0752
0.85	186	0.2606	0.4267	0.042
0.85	198	-0.5455	0.4388	0.0685
0.85	210	-0.1564	0.4272	0.0348
0.85	222	-0.1101	0.5396	0.0325
0.85	234	1.0447	0.4529	0.1216
0.85	246	0.7315	0.3577	0.0878
0.85	258	0.6168	0.3406	0.0758
0.85	270	0.2399	0.4826	0.0404
0.95	186	0.0898	0.4998	0.0317