CLAS Physics Database

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Measurement E151M1841

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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 :	0.2445 GeV²
W :	1505 GeV
ε :	0.8129
E_beam :	1.9889 GeV
ε_L:	0.2637

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	-0.1366	0.8122	0.0311
0.35	282	0.2047	0.7292	0.0325
0.35	294	-0.9028	0.7036	0.0624
0.55	102	-0.9146	0.7807	0.063
0.65	102	1.8273	0.6383	0.1147
0.65	114	0.7219	0.7211	0.053
0.65	126	-1.2404	0.7534	0.0809
0.65	138	-0.6141	0.7594	0.0478
0.65	234	0.3074	0.768	0.0353
0.75	102	1.4251	0.5577	0.0914
0.75	114	0.8495	0.677	0.0596
0.75	210	-1.1163	0.7275	0.074
0.75	234	1.9533	0.5702	0.1221
0.75	246	0.4135	0.7062	0.0391
0.75	258	0.8258	0.7671	0.0583
0.85	66	-0.308	0.7715	0.0353
0.85	78	0.7263	0.6326	0.0533
0.85	114	0.2076	0.7454	0.0325
0.85	126	-0.7385	0.757	0.0539
0.85	234	0.5307	0.7388	0.044
0.85	246	-0.2067	0.509	0.0325
0.85	258	-0.116	0.6471	0.0308
0.85	270	0.7678	0.6228	0.0554
0.95	234	0.3993	0.6206	0.0385
0.95	246	-0.0464	0.7016	0.0301
0.95	258	1.0282	0.5399	0.0691
0.95	270	-0.0399	0.6191	0.0301
0.95	282	0.3622	0.5164	0.0372
0.95	294	0.1514	0.627	0.0314