Measurement E151M1957

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:	0.7828
Q²:	0.1435 GeV²
W:	1235.0 GeV
E_beam:	2.2596 GeV
ε:	0.9626

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	270.0	-4.708	1.7915	0.4337
0.65	282.0	3.7604	1.8132	0.3469
0.75	258.0	2.5485	2.3057	0.2361
0.75	270.0	2.4642	2.2719	0.2284
0.75	282.0	-0.5684	2.2864	0.0602
0.85	102.0	-2.8986	2.779	0.2681
0.85	114.0	2.5122	2.9277	0.2328
0.85	126.0	0.4497	3.2333	0.0511
0.95	102.0	-7.8299	8.3368	0.7202
0.95	126.0	-5.059	9.3339	0.4659
0.55	270.0	-0.4075	0.5341	0.04
0.55	282.0	-0.5654	0.4773	0.0475
0.65	270.0	-0.0703	0.5293	0.0303
0.65	282.0	0.7595	0.4755	0.0578
0.75	90.0	-1.1757	0.4953	0.0822
0.75	102.0	-0.1654	0.5959	0.0319
0.75	258.0	-0.1822	0.5578	0.0323
0.75	270.0	0.4942	0.4061	0.044
0.75	282.0	0.0656	0.4053	0.0303
0.85	78.0	-0.8984	0.5482	0.0657
0.85	90.0	0.0523	0.5312	0.0302
0.85	102.0	0.7686	0.4801	0.0583
0.85	114.0	0.3486	0.5424	0.0376
0.85	258.0	0.5024	0.6028	0.0444
0.85	282.0	-0.267	0.5983	0.0347
0.95	90.0	-0.2298	0.9401	0.0335
0.95	102.0	-0.9097	0.907	0.0663
0.95	114.0	-0.1201	0.8423	0.031
0.95	126.0	0.2272	0.7973	0.0334
0.95	138.0	0.3331	0.9467	0.037
0.95	150.0	-1.4701	0.9917	0.1002

CLAS Physics Database