CLAS Physics Database

Measurement E151M3598

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: 0.1251
Q2: 0.2445 GeV2
W: 1745.0 GeV
Ebeam: 2.999 GeV
ε: 0.8431

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.65 114.0 0.2052 0.2567
0.65 126.0 -0.1415 0.2742
0.75 90.0 0.4871 0.25
0.75 186.0 -0.0429 0.2476
0.75 198.0 0.04 0.2491
0.75 234.0 0.1193 0.2391
0.75 294.0 -0.1044 0.2636
0.85 78.0 0.268 0.2187
0.85 90.0 0.0916 0.1974
0.85 102.0 -0.242 0.2221
0.85 114.0 0.0937 0.2553
0.85 186.0 -0.2562 0.2627
0.85 198.0 -0.0427 0.2167
0.85 210.0 -0.216 0.2062
0.85 222.0 -0.1255 0.2032
0.85 234.0 -0.2076 0.221
0.85 246.0 0.0642 0.2694
0.95 174.0 -0.1411 0.232
0.95 198.0 0.075 0.2612
0.95 210.0 -0.3988 0.2507
0.95 222.0 -0.1201 0.232
0.95 234.0 0.1449 0.191
0.95 246.0 -0.3406 0.2243
0.95 270.0 -0.2237 0.2576