Measurement E151M2177

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:	1.2383
Q²:	0.4155 GeV²
W:	1235.0 GeV
E_beam:	2.999 GeV
ε:	0.9514

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	282.0	-0.4085	0.6892	0.0422
0.35	294.0	0.9429	0.6325	0.0747
0.45	282.0	-0.2232	0.5925	0.0341
0.55	270.0	-0.7213	0.646	0.0603
0.55	282.0	0.6187	0.5834	0.054
0.55	294.0	0.1084	0.5882	0.031
0.65	78.0	-0.6252	0.6504	0.0544
0.65	90.0	1.0757	0.6499	0.0836
0.65	270.0	-0.1371	0.678	0.0316
0.65	282.0	0.7382	0.5852	0.0614
0.65	294.0	-0.0003	0.6076	0.03
0.65	306.0	0.1187	0.6302	0.0312
0.75	66.0	-0.2604	0.6238	0.0354
0.75	78.0	0.1247	0.5923	0.0313
0.75	90.0	0.3762	0.6974	0.0406
0.75	102.0	-0.1841	0.7445	0.0328
0.75	258.0	0.0676	0.6825	0.0304
0.75	270.0	0.077	0.7191	0.0305
0.75	282.0	0.1091	0.5479	0.031
0.75	294.0	0.0421	0.6159	0.0302
0.75	306.0	-0.4145	0.6327	0.0425
0.85	54.0	0.9235	0.7024	0.0734
0.85	66.0	1.0141	0.6417	0.0794
0.85	78.0	-0.1087	0.5834	0.031
0.85	90.0	-0.7324	0.5491	0.061
0.85	102.0	-0.2655	0.6122	0.0356
0.85	270.0	0.0219	0.6446	0.03
0.85	294.0	-0.4852	0.6873	0.0462
0.85	306.0	0.9884	0.5447	0.0777
0.85	318.0	0.6811	0.7723	0.0578
0.95	54.0	-0.5179	0.6769	0.0481
0.95	66.0	0.0592	0.6376	0.0303
0.95	90.0	0.9726	0.6601	0.0766
0.95	270.0	-0.2063	0.6989	0.0335

CLAS Physics Database