Measurement E151M2130

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:	0.0341
Q²:	0.0415 GeV²
W:	1655.0 GeV
E_beam:	2.2596 GeV
ε:	0.8403

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.45	78.0	1.0737	1.079
0.45	270.0	1.0232	0.9203
0.55	222.0	0.5973	1.0931
0.55	258.0	-1.0978	0.993
0.55	270.0	0.3552	0.9216
0.65	126.0	-0.0157	1.185
0.65	198.0	0.644	1.1662
0.65	210.0	-2.9688	2.9688
0.75	66.0	-0.1599	1.2263
0.75	210.0	1.4692	1.2121
0.75	234.0	1.4445	1.1216
0.75	270.0	1.1556	1.026
0.75	282.0	-0.774	0.891
0.85	114.0	-0.1214	1.5075
0.85	210.0	-1.1254	1.0975
0.85	222.0	0.4759	1.2848
0.35	78.0	-0.8194	0.6661
0.45	270.0	-0.836	0.7394
0.45	282.0	-0.9553	0.636
0.55	222.0	1.0405	0.8925
0.55	258.0	-0.7708	0.6675
0.55	270.0	-0.8347	0.603
0.65	126.0	-0.4474	0.6179
0.65	210.0	-1.3064	0.8052
0.65	222.0	-0.4974	0.9023
0.75	114.0	-1.1695	0.7875
0.75	210.0	-1.1187	0.7532
0.75	222.0	0.9898	0.8399
0.75	270.0	-0.5178	0.7782
0.75	282.0	-0.7284	0.6363
0.85	102.0	-0.4915	0.9188
0.85	126.0	-1.9303	0.7328
0.85	210.0	0.3337	0.8113
0.85	222.0	-1.1702	0.9517

CLAS Physics Database