Measurement E151M1250

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:	0.2038
Q²:	0.0291 GeV²
W:	1235.0 GeV
E_beam:	1.0539 GeV
ε:	0.9017

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.15	42.0	-0.0071	0.5714
0.15	54.0	0.5586	0.6923
0.25	30.0	-0.2796	0.6747
0.25	42.0	0.1306	0.4842
0.25	54.0	0.2745	0.4812
0.35	30.0	0.6932	0.5404
0.35	42.0	-0.0858	0.4365
0.35	54.0	-1.2459	0.4042
0.35	66.0	-0.1893	0.5976
0.45	42.0	0.0477	0.6052
0.45	54.0	0.253	0.5483
0.45	258.0	-0.782	0.5342
0.45	270.0	-0.3869	0.5167
0.45	282.0	0.0006	0.4087
0.55	246.0	0.0984	0.6103
0.55	258.0	0.0704	0.3448
0.55	270.0	0.1116	0.3088
0.55	282.0	0.5955	0.3616
0.65	234.0	-0.4094	0.4733
0.65	246.0	0.0015	0.3966
0.65	258.0	0.1269	0.2948
0.65	270.0	0.2186	0.2931
0.65	282.0	-0.9347	0.3902
0.75	138.0	0.0386	0.6487
0.75	150.0	-0.2448	0.4981
0.75	162.0	0.4528	0.4903
0.75	174.0	0.4089	0.4772
0.75	186.0	0.2009	0.4217
0.75	198.0	0.2068	0.4529
0.75	222.0	-0.1887	0.5416
0.75	234.0	0.6111	0.4221
0.75	246.0	0.2797	0.31
0.75	258.0	-0.1162	0.2929
0.75	270.0	-0.018	0.3049
0.75	282.0	0.6786	0.4845
0.85	126.0	-0.4977	0.6323
0.85	138.0	0.508	0.5083
0.85	150.0	0.3324	0.3456
0.85	162.0	0.5716	0.3783
0.85	174.0	0.6115	0.3915
0.85	186.0	0.2606	0.4267
0.85	198.0	-0.5455	0.4388
0.85	210.0	-0.1564	0.4272
0.85	222.0	-0.1101	0.5396
0.85	234.0	1.0447	0.4529
0.85	246.0	0.7315	0.3577
0.85	258.0	0.6168	0.3406
0.85	270.0	0.2399	0.4826
0.95	186.0	0.0898	0.4998

CLAS Physics Database