Measurement E151M1702

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:	0.7731
Q²:	0.1435 GeV²
W:	1235.0 GeV
E_beam:	1.9889 GeV
ε:	0.9507

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.35	66.0	-0.7037	0.5975
0.45	66.0	-0.3241	0.6411
0.45	78.0	-0.0716	0.5781
0.45	282.0	0.4654	0.5208
0.55	78.0	-1.3153	0.5177
0.55	270.0	-0.8591	0.5754
0.55	282.0	-0.2328	0.4747
0.65	258.0	-0.1117	0.6023
0.65	270.0	0.5773	0.4476
0.65	282.0	-0.524	0.4386
0.75	90.0	1.1158	0.5868
0.75	258.0	0.9512	0.4054
0.75	270.0	0.008	0.4031
0.75	282.0	0.0956	0.4898
0.85	90.0	-0.3744	0.503
0.85	102.0	-1.1056	0.4073
0.85	114.0	0.9473	0.4187
0.85	126.0	-0.6995	0.5115
0.85	258.0	0.7345	0.5411
0.85	270.0	0.4402	0.4863
0.85	282.0	-0.0207	0.5995
0.95	78.0	0.1936	0.552
0.95	90.0	0.3123	0.4379
0.95	102.0	0.2736	0.4689
0.95	114.0	-0.1855	0.5502
0.95	126.0	0.3218	0.4418
0.95	138.0	-0.1993	0.4528
0.95	150.0	-0.9163	0.4679
0.95	174.0	0.0741	0.5035

CLAS Physics Database