CLAS Physics Database

Measurement E151M2608

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: ALU
εL: 0.0095
Q2: 0.0059 GeV2
W: 1445.0 GeV
Ebeam: 1.0539 GeV
ε: 0.6685

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.45 42.0 0.3205 0.2165
0.45 54.0 -0.189 0.1831
0.45 222.0 0.0002 0.2615
0.55 42.0 -0.2732 0.2475
0.55 54.0 -0.0168 0.2181
0.55 222.0 0.11 0.2135
0.55 234.0 -0.2157 0.2222
0.55 246.0 -0.2266 0.2457
0.65 222.0 0.1083 0.2104
0.65 234.0 -0.0963 0.2537
0.65 246.0 0.0906 0.2109
0.75 222.0 0.0375 0.2381
0.75 234.0 -0.3476 0.1806
0.75 246.0 -0.2831 0.2032
0.85 222.0 -0.4824 0.236
0.85 234.0 -0.2853 0.2128