Measurement E151M2221

Experiment:	EG4
Year:	2016	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).
Spokesperson:	Xiaochao Zheng
Reaction:	ep → π⁺n
Polarization:	beam (longitudinal), target (longitudinal)
Quantity:	A_LL
ε_L:	0.7915
Q²:	0.5925 GeV²
W:	1355.0 GeV
E_beam:	2.999 GeV
ε:	0.9092

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	78.0	-0.1784	0.8333	0.0327
0.65	90.0	0.6809	0.8292	0.0578
0.65	102.0	-0.7461	0.8647	0.0619
0.65	258.0	-1.335	0.6923	0.1013
0.65	282.0	1.1546	0.7925	0.0889
0.75	78.0	-0.6276	0.7614	0.0545
0.75	90.0	1.2188	0.7299	0.0933
0.75	102.0	-0.0699	0.8755	0.0304
0.75	246.0	0.2428	0.8615	0.0348
0.75	258.0	0.2254	0.7181	0.0342
0.75	270.0	1.0698	0.7152	0.0832
0.75	282.0	0.309	0.8238	0.0374
0.75	294.0	0.2201	0.8181	0.034
0.85	78.0	-1.6735	0.7214	0.125
0.85	102.0	1.5575	0.7831	0.1169
0.85	246.0	1.6964	0.6223	0.1266
0.85	258.0	-0.2807	0.5972	0.0363
0.85	270.0	0.3941	0.7106	0.0414
0.85	282.0	1.0938	0.7539	0.0848
0.85	294.0	0.9714	0.8277	0.0766
0.85	306.0	0.6809	0.7951	0.0578
0.85	318.0	0.732	0.772	0.061
0.95	246.0	-0.4743	0.8043	0.0456
0.95	270.0	0.7043	0.688	0.0592
0.95	282.0	-0.062	0.7379	0.0303
0.95	294.0	0.9453	0.7043	0.0748

CLAS Physics Database