CLAS Physics Database

Measurement E151M1388

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: ALL
εL: 0.0134
Q2: 0.0084 GeV2
W: 1445.0 GeV
Ebeam: 1.0539 GeV
ε: 0.6652

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALL uncertainty
0.35 30.0 -0.226 0.8924
0.35 42.0 0.9765 0.7567
0.35 54.0 -0.5586 0.7132
0.45 30.0 -0.007 0.8962
0.45 42.0 -0.4407 0.7305
0.45 54.0 0.5232 0.6162
0.45 66.0 0.4412 0.817
0.45 222.0 0.3759 0.9171
0.55 30.0 -0.8796 0.7407
0.55 42.0 -0.7904 0.5971
0.55 54.0 0.7075 0.686
0.55 66.0 -1.4307 0.8062
0.55 162.0 -0.3629 0.8656
0.55 210.0 1.3721 0.8436
0.55 222.0 0.8907 0.6633
0.55 234.0 1.0003 0.6043
0.55 246.0 -0.022 0.7009
0.55 258.0 -1.4328 0.7975
0.65 138.0 -0.4489 0.8144
0.65 150.0 -0.4441 0.7535
0.65 174.0 -0.2377 0.9106
0.65 210.0 -0.1517 0.7612
0.65 222.0 0.2987 0.7158
0.65 234.0 0.184 0.5756
0.65 246.0 0.3504 0.6637
0.75 210.0 -1.623 0.7347
0.75 222.0 0.4852 0.7311
0.75 234.0 -0.5639 0.6414
0.75 246.0 -1.1512 0.5669
0.85 210.0 -0.2947 0.7401
0.85 222.0 0.9079 0.6927
0.85 234.0 -0.4194 0.6019
0.85 246.0 -0.6745 0.6686