Measurement E151M1228

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:	0.1911
Q²:	0.0205 GeV²
W:	1205.0 GeV
E_beam:	1.0539 GeV
ε:	0.9279

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.55	246.0	-0.9927	0.5185
0.55	258.0	-0.2896	0.5507
0.55	270.0	-0.5396	0.3841
0.55	282.0	-0.7418	0.4423
0.65	246.0	-0.7136	0.3892
0.65	258.0	-0.1861	0.348
0.65	270.0	0.4596	0.3631
0.65	282.0	0.4326	0.4537
0.75	162.0	-0.2075	0.5193
0.75	174.0	0.5763	0.4597
0.75	186.0	-0.5559	0.4054
0.75	198.0	-0.0913	0.4372
0.75	210.0	0.4428	0.4411
0.75	222.0	0.5241	0.4785
0.75	234.0	-0.4909	0.5398
0.75	246.0	0.2898	0.4234
0.75	258.0	-0.7127	0.4119
0.85	150.0	-0.8928	0.4685
0.85	162.0	0.0836	0.4494
0.85	174.0	0.1939	0.3656
0.85	186.0	-0.2434	0.4415
0.85	198.0	0.1618	0.402
0.85	210.0	0.1364	0.4011
0.85	222.0	-0.1826	0.5038

CLAS Physics Database