CLAS Physics Database

Measurement E151M7

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: AUL
εL: 0.2241
Q2: 0.0245 GeV2
W: 1205.0 GeV
Ebeam: 1.0539 GeV
ε: 0.9247

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.25 54.0 0.5729 0.516
0.35 54.0 -0.3771 0.4824
0.45 270.0 0.2809 0.5002
0.45 282.0 -0.3988 0.4394
0.55 258.0 0.1304 0.4162
0.55 270.0 -0.4045 0.3234
0.55 282.0 -1.2211 0.2619
0.65 246.0 0.5278 0.4385
0.65 258.0 -0.0685 0.3248
0.65 270.0 -0.3166 0.2698
0.75 162.0 0.668 0.4103
0.75 174.0 -0.3737 0.3975
0.75 186.0 -0.4836 0.4016
0.75 198.0 0.007 0.3878
0.75 210.0 0.2556 0.48
0.75 234.0 -0.1382 0.4643
0.75 246.0 -0.1826 0.4032
0.75 258.0 -0.0823 0.3337
0.75 270.0 0.8008 0.4923
0.85 150.0 -0.7347 0.3348
0.85 162.0 0.0609 0.391
0.85 174.0 -0.264 0.338
0.85 186.0 0.4138 0.3434
0.85 198.0 -0.3935 0.3495
0.85 210.0 -0.1565 0.4309
0.85 222.0 0.4383 0.4701