CLAS Physics Database

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Measurement E151M2099

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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 :	0.1205 GeV²
W :	1565 GeV
ε :	0.8673
E_beam :	2.2596 GeV
ε_L:	0.129

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
0.55	114	-0.89	0.6058	0.1092
0.65	102	-0.2421	0.8077	0.0339
0.65	114	-0.2398	0.8163	0.0338
0.65	138	0.8902	0.9758	0.0871
0.65	222	-0.844	0.848	0.0832
0.65	234	-0.4189	0.621	0.044
0.75	102	0.8598	0.8917	0.0635
0.75	114	0.7012	0.6555	0.0636
0.75	126	-0.8669	1.0147	0.0851
0.75	210	-0.8683	0.9616	0.064
0.75	222	0.0311	0.8018	0.0301
0.75	234	-0.7547	0.6175	0.065
0.85	90	-1.2064	1.0435	0.1149
0.85	222	0.1381	0.8873	0.0326
0.85	234	0.2418	0.9025	0.0373
0.85	246	-0.6813	0.9842	0.0694
0.95	234	-0.5931	2.5784	0.0622
0.95	246	2.8041	2.5409	0.2594
0.75	282	-1.6726	0.7409	0.1129
0.75	294	0.8352	0.795	0.0621
0.85	90	-0.2878	0.9573	0.0354
0.85	198	-0.4491	1.1409	0.0419
0.85	222	-1.9289	0.8078	0.129
0.85	234	-1.4407	0.876	0.0984
0.85	246	0.6798	0.9032	0.0534
0.95	246	0.635	1.4222	0.0511
0.95	258	1.6333	1.4725	0.1104