Measurement E151M1249

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:	0.1741
Q²:	0.0245 GeV²
W:	1235.0 GeV
E_beam:	1.0539 GeV
ε:	0.9058

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.15	42.0	0.1765	0.5812
0.15	54.0	0.194	0.6932
0.25	30.0	-0.6298	0.5376
0.25	42.0	-0.0968	0.4715
0.25	54.0	-0.2617	0.4944
0.35	30.0	-0.6241	0.6146
0.35	42.0	-0.2387	0.4601
0.35	54.0	-0.014	0.4142
0.45	42.0	-0.5609	0.4438
0.45	54.0	-0.8999	0.5016
0.45	66.0	0.3126	0.6437
0.45	270.0	-0.4513	0.475
0.45	282.0	-0.5262	0.4247
0.55	246.0	0.2044	0.4274
0.55	258.0	-0.3329	0.3075
0.55	270.0	-0.3876	0.3291
0.55	282.0	0.8763	0.3545
0.65	234.0	0.4483	0.4448
0.65	246.0	-0.1677	0.3533
0.65	258.0	-0.9341	0.2635
0.65	270.0	-0.3201	0.2653
0.65	282.0	0.6682	0.351
0.75	126.0	-0.878	0.5792
0.75	138.0	-0.2606	0.5128
0.75	150.0	0.4206	0.4276
0.75	162.0	-0.2968	0.4054
0.75	174.0	-0.2149	0.3803
0.75	186.0	-0.2426	0.4816
0.75	198.0	-0.5433	0.4048
0.75	210.0	0.7466	0.4124
0.75	222.0	0.9491	0.4403
0.75	234.0	-0.194	0.3805
0.75	246.0	-0.1976	0.3148
0.75	258.0	0.1024	0.2685
0.75	270.0	0.3853	0.2623
0.75	282.0	-0.0103	0.4618
0.85	138.0	0.7219	0.5009
0.85	150.0	-0.0244	0.3899
0.85	162.0	1.4452	0.3066
0.85	174.0	-0.0175	0.3548
0.85	186.0	-0.1095	0.3584
0.85	198.0	-0.3495	0.4231
0.85	210.0	-0.5861	0.4506
0.85	222.0	0.2835	0.451
0.85	234.0	1.0356	0.349
0.85	246.0	-0.1485	0.5281
0.85	258.0	0.1573	0.348
0.85	270.0	-0.6404	0.4567

CLAS Physics Database