Measurement E151M1719

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:	0.8506
Q²:	0.2445 GeV²
W:	1265.0 GeV
E_beam:	1.9889 GeV
ε:	0.9187

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	66.0	-0.2241	0.6681
0.35	66.0	0.2185	0.6869
0.55	270.0	0.827	0.5913
0.55	282.0	0.1913	0.6528
0.65	270.0	0.0947	0.6458
0.65	282.0	-0.1358	0.5272
0.65	294.0	0.5313	0.4897
0.75	78.0	0.4629	0.6532
0.75	90.0	0.0964	0.5718
0.75	102.0	-0.9244	0.631
0.75	246.0	-0.7682	0.6203
0.75	258.0	-0.3854	0.5813
0.75	270.0	0.7652	0.4253
0.75	282.0	-0.2534	0.5464
0.75	294.0	0.0592	0.6287
0.85	78.0	-0.4242	0.5004
0.85	90.0	-0.1601	0.6283
0.85	102.0	0.187	0.4911
0.85	114.0	-0.3889	0.4691
0.85	126.0	-0.437	0.6047
0.85	246.0	0.5911	0.5709
0.85	258.0	-0.2509	0.5533
0.85	270.0	0.4567	0.6014
0.85	282.0	0.3202	0.5709
0.85	294.0	0.1777	0.522
0.95	78.0	0.117	0.5687
0.95	90.0	0.0132	0.6159
0.95	102.0	0.1934	0.5019
0.95	114.0	-1.3607	0.4775
0.95	126.0	0.8746	0.5472
0.95	138.0	0.3715	0.5744
0.95	270.0	0.0675	0.5824
0.95	282.0	0.4431	0.5062
0.95	294.0	-0.3691	0.4564

CLAS Physics Database