Measurement E151M1412

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:	0.0289
Q²:	0.0245 GeV²
W:	1475.0 GeV
E_beam:	1.0539 GeV
ε:	0.5835

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	30.0	0.806	0.8357
0.25	42.0	0.0077	0.7318
0.25	54.0	-0.7084	0.8643
0.35	42.0	-0.1065	0.675
0.35	54.0	0.4327	0.5786
0.35	66.0	0.4047	0.8575
0.35	246.0	-2.0694	0.8478
0.45	30.0	-0.0451	0.8311
0.45	42.0	0.9523	0.6465
0.45	54.0	-0.5529	0.6992
0.45	66.0	0.8184	0.6464
0.45	222.0	0.6604	0.8248
0.45	234.0	-0.8992	0.6606
0.45	246.0	-0.4622	0.7321
0.45	258.0	-0.9147	0.7016
0.55	30.0	0.0858	0.8637
0.55	42.0	0.2545	0.9079
0.55	54.0	0.1488	0.7541
0.55	150.0	-1.4636	0.748
0.55	162.0	-0.9713	0.7886
0.55	222.0	-0.1315	0.6722
0.55	234.0	0.1974	0.6445
0.55	246.0	-0.503	0.6261
0.55	258.0	-0.209	0.6477
0.65	162.0	0.1849	0.8004
0.65	174.0	1.9631	0.6705
0.65	186.0	0.2888	0.8446
0.65	222.0	-0.8384	0.6356
0.65	234.0	-1.1675	0.5142
0.65	246.0	-0.9721	0.5566
0.65	258.0	0.4126	0.6175
0.75	30.0	0.7372	0.826
0.75	42.0	0.5163	0.7622
0.75	222.0	-0.3931	0.7154
0.75	234.0	-1.4708	0.5476
0.75	246.0	-0.396	0.4822
0.75	258.0	-0.5145	0.6433
0.85	222.0	0.0555	0.6963
0.85	234.0	0.6995	0.6008
0.85	246.0	0.0818	0.5756
0.85	258.0	0.9197	0.5507

CLAS Physics Database