Measurement E151M1293

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:	0.15
Q²:	0.0348 GeV²
W:	1295.0 GeV
E_beam:	1.0539 GeV
ε:	0.8461

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	54.0	-0.6252	0.6909
0.35	30.0	-0.5145	0.7068
0.35	42.0	-0.1311	0.7168
0.45	30.0	-0.5442	0.7761
0.45	42.0	0.0733	0.5941
0.45	54.0	0.1798	0.8778
0.45	270.0	0.0996	0.7513
0.55	246.0	-0.1156	0.5019
0.55	258.0	0.7346	0.4798
0.55	270.0	0.0812	0.4743
0.55	282.0	0.79	0.7499
0.65	150.0	0.2796	0.719
0.65	234.0	0.0308	0.5188
0.65	246.0	0.155	0.4412
0.65	258.0	-0.0337	0.4286
0.65	270.0	-0.0589	0.4067
0.65	282.0	1.3758	0.6245
0.75	126.0	-0.8469	0.7777
0.75	138.0	-0.4621	0.6376
0.75	150.0	0.7179	0.6369
0.75	162.0	0.749	0.5479
0.75	174.0	0.413	0.6276
0.75	186.0	0.6853	0.6783
0.75	198.0	0.8521	0.7333
0.75	222.0	-0.0506	0.5886
0.75	234.0	0.1673	0.4468
0.75	246.0	-0.146	0.374
0.75	258.0	-0.1761	0.3885
0.75	270.0	-0.334	0.3997
0.75	282.0	0.0882	0.5607
0.85	126.0	1.15	0.687
0.85	138.0	0.3715	0.5172
0.85	150.0	-0.2966	0.4698
0.85	162.0	-0.363	0.5111
0.85	174.0	-0.6684	0.5792
0.85	186.0	0.4768	0.5609
0.85	198.0	0.4965	0.6383
0.85	210.0	0.3145	0.7244
0.85	222.0	1.4075	0.6433
0.85	234.0	-0.4985	0.4403
0.85	246.0	0.6064	0.3647
0.85	258.0	0.0253	0.3433
0.85	270.0	0.7285	0.3841
0.85	282.0	0.0159	0.5744
0.95	138.0	-1.0586	0.602
0.95	150.0	1.071	0.598
0.95	162.0	-0.2839	0.6394
0.95	258.0	-0.0528	0.6067

CLAS Physics Database