Measurement E151M1777

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:	0.3715
Q²:	0.1715 GeV²
W:	1385.0 GeV
E_beam:	1.9889 GeV
ε:	0.8997

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	66.0	-1.6062	0.6958
0.25	78.0	-0.2433	0.8282
0.25	294.0	0.5633	0.6737
0.25	306.0	0.2059	0.8076
0.35	66.0	-0.2677	0.7032
0.35	78.0	0.059	0.678
0.35	282.0	0.1886	0.7403
0.35	294.0	0.1708	0.6951
0.35	306.0	-0.1871	0.826
0.45	66.0	-0.9895	0.7511
0.45	78.0	0.1543	0.7484
0.45	294.0	1.3192	0.7056
0.55	282.0	1.4133	0.7006
0.65	90.0	0.0928	0.8041
0.65	102.0	-0.581	0.651
0.65	114.0	-0.0245	0.6339
0.65	126.0	-0.463	0.8465
0.65	246.0	-0.7745	0.6395
0.65	258.0	-0.8683	0.5541
0.65	270.0	0.6944	0.6534
0.75	90.0	1.0449	0.5304
0.75	102.0	1.0783	0.5789
0.75	114.0	0.1531	0.5457
0.75	126.0	-0.8322	0.7035
0.75	138.0	-0.8435	0.7831
0.75	222.0	1.2721	0.6784
0.75	234.0	-0.6628	0.619
0.75	246.0	-1.1673	0.5059
0.75	258.0	0.3838	0.4868
0.75	270.0	-0.4739	0.4837
0.75	282.0	-0.0353	0.653
0.85	78.0	-0.0364	0.8193
0.85	90.0	0.4908	0.671
0.85	102.0	0.7744	0.4917
0.85	114.0	-0.0165	0.6115
0.85	126.0	0.9643	0.5428
0.85	138.0	-0.4414	0.7111
0.85	150.0	-0.4074	0.7639
0.85	222.0	-0.2025	0.5903
0.85	234.0	0.4678	0.4851
0.85	246.0	-0.0622	0.585
0.85	258.0	1.0351	0.5471
0.85	270.0	-0.07	0.5581
0.85	282.0	-0.6467	0.4838
0.85	294.0	-0.9429	0.558
0.95	78.0	-1.1608	0.6939
0.95	114.0	-0.1108	0.591
0.95	126.0	-0.845	0.5624
0.95	138.0	0.2436	0.6855
0.95	222.0	-0.1327	0.5922
0.95	234.0	-0.2343	0.6491
0.95	246.0	0.456	0.5419
0.95	258.0	0.1291	0.4822
0.95	270.0	-0.0473	0.4553
0.95	282.0	0.8525	0.4429
0.95	294.0	0.2325	0.5246

CLAS Physics Database