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	syst. uncert.
0.35	66.0	-0.7037	0.5975	0.0521
0.45	66.0	-0.3241	0.6411	0.0359
0.45	78.0	-0.0716	0.5781	0.0303
0.45	282.0	0.4654	0.5208	0.0412
0.55	78.0	-1.3153	0.5177	0.0852
0.55	270.0	-0.8591	0.5754	0.0601
0.55	282.0	-0.2328	0.4747	0.0332
0.65	258.0	-0.1117	0.6023	0.0308
0.65	270.0	0.5773	0.4476	0.0461
0.65	282.0	-0.524	0.4386	0.0437
0.75	90.0	1.1158	0.5868	0.074
0.75	258.0	0.9512	0.4054	0.065
0.75	270.0	0.008	0.4031	0.03
0.75	282.0	0.0956	0.4898	0.0306
0.85	90.0	-0.3744	0.503	0.0376
0.85	102.0	-1.1056	0.4073	0.0734
0.85	114.0	0.9473	0.4187	0.0648
0.85	126.0	-0.6995	0.5115	0.0519
0.85	258.0	0.7345	0.5411	0.0537
0.85	270.0	0.4402	0.4863	0.0401
0.85	282.0	-0.0207	0.5995	0.03
0.95	78.0	0.1936	0.552	0.0322
0.95	90.0	0.3123	0.4379	0.0355
0.95	102.0	0.2736	0.4689	0.0343
0.95	114.0	-0.1855	0.5502	0.032
0.95	126.0	0.3218	0.4418	0.0358
0.95	138.0	-0.1993	0.4528	0.0323
0.95	150.0	-0.9163	0.4679	0.0631
0.95	174.0	0.0741	0.5035	0.0303

CLAS Physics Database