Measurement E151M495

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:	0.7126
Q²:	0.1715 GeV²
W:	1265.0 GeV
E_beam:	1.9889 GeV
ε:	0.9373

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.15	66.0	0.5671	0.5792	0.0459
0.25	66.0	0.2246	0.5058	0.033
0.35	66.0	-0.0873	0.4184	0.0305
0.35	78.0	-0.6719	0.4579	0.0509
0.45	66.0	0.5906	0.5034	0.047
0.45	78.0	0.0456	0.4359	0.0301
0.45	282.0	0.7014	0.529	0.0523
0.55	270.0	0.0264	0.4223	0.03
0.55	282.0	0.5235	0.3975	0.0439
0.65	102.0	-0.1385	0.5948	0.0312
0.65	258.0	0.7768	0.6273	0.0562
0.65	270.0	0.9832	0.4329	0.0672
0.65	282.0	-0.0008	0.359	0.03
0.75	90.0	-0.4374	0.4293	0.0402
0.75	102.0	-0.0199	0.4517	0.03
0.75	114.0	-0.7533	0.4544	0.055
0.75	258.0	0.3464	0.3575	0.0367
0.75	270.0	0.5215	0.4429	0.0438
0.75	282.0	0.0232	0.3488	0.03
0.75	294.0	0.1104	0.4721	0.0308
0.85	78.0	0.5553	0.5168	0.0453
0.85	90.0	-0.0437	0.3754	0.0301
0.85	102.0	-0.3207	0.4056	0.0358
0.85	114.0	-0.0342	0.3974	0.0301
0.85	126.0	-0.2092	0.3956	0.0326
0.85	138.0	-0.0996	0.5189	0.0306
0.85	246.0	-0.1514	0.4053	0.0314
0.85	258.0	0.6161	0.4481	0.0482
0.85	270.0	0.3492	0.3893	0.0368
0.85	282.0	0.786	0.4493	0.0567
0.85	294.0	0.0284	0.4708	0.0301
0.95	78.0	-0.3938	0.4263	0.0385
0.95	90.0	-0.1182	0.4064	0.0309
0.95	102.0	0.5606	0.4321	0.0456
0.95	114.0	0.2793	0.3729	0.0345
0.95	126.0	-0.0606	0.4128	0.0302
0.95	138.0	-0.11	0.4315	0.0307
0.95	150.0	1.2582	0.5075	0.0826
0.95	162.0	-0.2808	0.5112	0.0346
0.95	246.0	0.1124	0.5256	0.0308
0.95	258.0	-0.1127	0.4928	0.0308
0.95	270.0	1.0191	0.4219	0.0692

CLAS Physics Database