Measurement E151M1894

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:	0.0429
Q²:	0.0496 GeV²
W:	1625.0 GeV
E_beam:	1.9889 GeV
ε:	0.8052

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.35	30.0	-1.3013	0.8533
0.35	66.0	-0.2236	0.8858
0.35	78.0	-0.7886	0.8463
0.35	270.0	-0.1264	0.8889
0.45	78.0	-0.1996	0.8265
0.45	90.0	-0.5952	0.9748
0.45	258.0	-1.1835	0.7755
0.45	270.0	-0.7309	0.6702
0.45	282.0	0.2248	0.8415
0.45	294.0	-0.4209	0.8019
0.55	78.0	0.9721	0.9214
0.55	90.0	0.9739	0.8094
0.55	102.0	-1.5732	0.9028
0.55	114.0	-1.3914	0.8224
0.55	138.0	1.7843	0.7229
0.55	210.0	-1.5135	0.7818
0.55	222.0	-0.8798	0.7904
0.55	246.0	-0.8722	0.8816
0.55	258.0	-0.2619	0.789
0.55	270.0	-0.8423	0.6343
0.55	282.0	1.328	0.6565
0.65	78.0	-0.261	0.9498
0.65	114.0	0.1347	0.9176
0.65	126.0	-0.1963	0.7319
0.65	138.0	0.9741	0.7491
0.65	150.0	0.378	0.9249
0.65	198.0	-0.7471	0.9375
0.65	210.0	-1.2718	0.8035
0.65	222.0	0.812	0.7927
0.65	234.0	0.6342	0.7569
0.65	258.0	-0.4662	0.8855
0.65	282.0	1.0343	0.6872
0.65	294.0	0.5091	0.8502
0.75	66.0	-1.2263	0.7749
0.75	78.0	-1.7348	0.6818
0.75	102.0	0.4989	0.9282
0.75	126.0	0.526	0.8577
0.75	138.0	-1.8489	0.7867
0.75	198.0	-1.7966	0.7522
0.75	210.0	-0.71	0.6482
0.75	222.0	-0.4775	0.6891
0.75	234.0	0.0935	0.7641
0.75	258.0	-0.2447	1.0041
0.75	270.0	-0.8017	0.6952
0.75	282.0	-0.1485	0.6366
0.75	294.0	-0.997	0.8059
0.85	102.0	-0.4523	0.9065
0.85	114.0	-1.0262	0.7179
0.85	138.0	-2.0789	0.7271
0.85	198.0	-1.333	0.813
0.85	210.0	0.1356	0.6849
0.85	222.0	0.8333	0.6217
0.85	234.0	-0.5837	0.7361
0.85	246.0	0.1524	0.8064

CLAS Physics Database