Measurement E151M171

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_UL
ε_L:	0.0311
Q²:	0.0205 GeV²
W:	1445.0 GeV
E_beam:	1.0539 GeV
ε:	0.6495

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.25	30.0	-0.128	0.7528
0.25	42.0	0.9869	0.8097
0.25	54.0	-1.1893	0.5652
0.35	42.0	0.1324	0.5023
0.35	54.0	-0.1178	0.508
0.35	66.0	0.262	0.8648
0.45	30.0	-1.3394	0.5243
0.45	42.0	0.2812	0.5322
0.45	54.0	0.649	0.492
0.45	66.0	-0.8053	0.7294
0.45	222.0	0.1549	0.622
0.45	234.0	0.3582	0.7119
0.45	246.0	1.1127	0.6702
0.45	258.0	-0.8373	0.6611
0.55	30.0	-0.4812	0.6816
0.55	42.0	0.3581	0.6468
0.55	54.0	0.7473	0.6298
0.55	138.0	-1.0246	0.7342
0.55	150.0	0.4247	0.7977
0.55	162.0	-0.4804	0.7314
0.55	222.0	0.1707	0.612
0.55	234.0	-0.2526	0.5046
0.55	246.0	-0.0895	0.4854
0.55	258.0	-0.0779	0.6992
0.65	138.0	-0.3648	0.7003
0.65	150.0	-0.5659	0.6496
0.65	162.0	0.0183	0.6031
0.65	174.0	-0.6256	0.7332
0.65	210.0	-0.48	0.7033
0.65	222.0	-0.0003	0.5796
0.65	234.0	0.5668	0.4721
0.65	246.0	0.9716	0.4772
0.65	258.0	0.7031	0.6009
0.75	42.0	1.2698	0.8491
0.75	138.0	0.6029	0.7814
0.75	150.0	-0.0243	0.7735
0.75	162.0	0.2543	0.8001
0.75	210.0	-0.3922	0.6921
0.75	222.0	0.1363	0.55
0.75	234.0	0.0693	0.4894
0.75	246.0	0.5526	0.5032
0.75	258.0	0.2855	0.5176
0.85	222.0	1.2234	0.5588
0.85	234.0	0.0717	0.4461
0.85	246.0	-0.2988	0.4196
0.85	258.0	0.6227	0.622
0.95	234.0	0.3916	0.6054

CLAS Physics Database