Measurement E151M1856

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:	0.2306
Q²:	0.2445 GeV²
W:	1535.0 GeV
E_beam:	1.9889 GeV
ε:	0.7925

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	282.0	0.8349	0.844	0.0588
0.65	114.0	1.1502	0.7778	0.0759
0.65	234.0	-0.5081	0.8765	0.043
0.65	246.0	-0.0833	0.9637	0.0304
0.75	102.0	0.9003	0.8286	0.0623
0.75	114.0	0.5564	0.7876	0.0451
0.75	138.0	-1.0317	0.8571	0.0693
0.75	222.0	0.1121	0.7287	0.0308
0.75	234.0	0.5279	0.7268	0.0439
0.75	246.0	-0.6304	0.8286	0.0486
0.75	258.0	0.3269	0.8695	0.0359
0.85	78.0	-0.1621	0.8022	0.0316
0.85	138.0	-0.2593	0.9182	0.0339
0.85	210.0	-1.2461	0.8348	0.0812
0.85	222.0	0.325	0.7887	0.0359
0.85	234.0	0.1289	0.815	0.031
0.85	246.0	-1.4825	0.6489	0.0947
0.85	258.0	-0.0105	0.8023	0.03
0.85	270.0	0.6691	0.8206	0.0504
0.95	234.0	-0.5813	0.774	0.0463
0.95	258.0	-0.0023	0.6991	0.03
0.95	270.0	-0.752	0.7134	0.0546
0.95	282.0	0.0569	0.6674	0.0302

CLAS Physics Database