Measurement E151M1229

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:	0.2241
Q²:	0.0245 GeV²
W:	1205.0 GeV
E_beam:	1.0539 GeV
ε:	0.9247

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.25	54.0	0.2237	0.5768	0.0392
0.35	54.0	0.3386	0.5761	0.0486
0.45	270.0	-0.6204	0.5524	0.0761
0.45	282.0	0.9466	0.4944	0.1109
0.55	258.0	-0.604	0.4488	0.0744
0.55	270.0	-0.5862	0.3882	0.0726
0.55	282.0	-0.4438	0.4621	0.0584
0.65	246.0	0.4572	0.4788	0.0597
0.65	258.0	-0.5945	0.356	0.0735
0.65	270.0	0.0807	0.3266	0.0314
0.75	162.0	-0.6553	0.4365	0.0798
0.75	174.0	-1.1991	0.4352	0.1385
0.75	186.0	0.3074	0.5053	0.0458
0.75	198.0	-0.3848	0.4374	0.0528
0.75	210.0	0.2925	0.525	0.0446
0.75	234.0	0.4222	0.5414	0.0563
0.75	246.0	0.2299	0.4663	0.0397
0.75	258.0	0.0916	0.3847	0.0317
0.75	270.0	-0.3695	0.5364	0.0514
0.85	150.0	0.0841	0.4474	0.0315
0.85	162.0	0.5823	0.4215	0.0722
0.85	174.0	0.2486	0.4055	0.0411
0.85	186.0	0.2152	0.3753	0.0386
0.85	198.0	0.1469	0.4245	0.0343
0.85	210.0	-0.0349	0.505	0.0303
0.85	222.0	0.8046	0.4973	0.0956

CLAS Physics Database