CLAS Physics Database

Measurement E151M44

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: 0.0709
Q2: 0.0121 GeV2
W: 1265.0 GeV
Ebeam: 1.0539 GeV
ε: 0.8946

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.25 42.0 -0.4759 0.5548
0.25 54.0 1.264 0.6258
0.35 54.0 1.6938 0.53
0.35 66.0 -0.538 0.6173
0.45 42.0 -0.5415 0.5648
0.45 54.0 -0.2485 0.5983
0.45 258.0 0.2507 0.6495
0.45 270.0 0.0446 0.6152
0.55 30.0 2.2612 2.2612
0.55 42.0 -0.668 0.4988
0.55 54.0 0.5457 0.4817
0.55 234.0 -0.0002 0.4521
0.55 246.0 -0.5603 0.3908
0.55 258.0 -0.0182 0.3337
0.55 270.0 0.663 0.4133
0.65 150.0 -0.5047 0.5165
0.65 162.0 -0.9106 0.4444
0.65 174.0 -0.2116 0.4866
0.65 198.0 -0.021 0.6095
0.65 222.0 0.2962 0.4475
0.65 234.0 0.2106 0.3909
0.65 246.0 0.2172 0.2901
0.65 258.0 -0.4459 0.2859
0.65 270.0 0.4001 0.3565
0.75 138.0 -0.4861 0.5112
0.75 150.0 -0.4587 0.473
0.75 162.0 0.0481 0.4463
0.75 174.0 0.7973 0.4893
0.75 186.0 0.2539 0.4563
0.75 198.0 -0.0435 0.4825
0.75 210.0 0.9077 0.5861
0.75 222.0 -0.4022 0.4242
0.75 234.0 0.3422 0.3704
0.75 246.0 -0.4367 0.2635
0.75 258.0 0.0574 0.314
0.75 270.0 0.4835 0.4078
0.85 162.0 -0.2283 0.5322
0.85 174.0 0.2438 0.6038
0.85 186.0 -0.3841 0.5042
0.85 210.0 0.6643 0.5856
0.85 222.0 -0.459 0.406
0.85 234.0 0.3005 0.4104
0.85 246.0 0.414 0.387
0.85 258.0 -0.2857 0.3761
0.85 270.0 0.1478 0.5957