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
0.65	270.0	-4.708	1.7915
0.65	282.0	3.7604	1.8132
0.75	258.0	2.5485	2.3057
0.75	270.0	2.4642	2.2719
0.75	282.0	-0.5684	2.2864
0.85	102.0	-2.8986	2.779
0.85	114.0	2.5122	2.9277
0.85	126.0	0.4497	3.2333
0.95	102.0	-7.8299	8.3368
0.95	126.0	-5.059	9.3339
0.55	270.0	-0.4075	0.5341
0.55	282.0	-0.5654	0.4773
0.65	270.0	-0.0703	0.5293
0.65	282.0	0.7595	0.4755
0.75	90.0	-1.1757	0.4953
0.75	102.0	-0.1654	0.5959
0.75	258.0	-0.1822	0.5578
0.75	270.0	0.4942	0.4061
0.75	282.0	0.0656	0.4053
0.85	78.0	-0.8984	0.5482
0.85	90.0	0.0523	0.5312
0.85	102.0	0.7686	0.4801
0.85	114.0	0.3486	0.5424
0.85	258.0	0.5024	0.6028
0.85	282.0	-0.267	0.5983
0.95	90.0	-0.2298	0.9401
0.95	102.0	-0.9097	0.907
0.95	114.0	-0.1201	0.8423
0.95	126.0	0.2272	0.7973
0.95	138.0	0.3331	0.9467
0.95	150.0	-1.4701	0.9917

CLAS Physics Database