CLAS Physics Database

Measurement E151M2854

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: 0.0362
Q2: 0.0348 GeV2
W: 1535.0 GeV
Ebeam: 1.3383 GeV
ε: 0.6738

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.45 18.0 0.1745 0.2721
0.45 30.0 -0.36 0.2695
0.45 42.0 0.6829 0.2141
0.55 138.0 0.0629 0.2438
0.55 150.0 -0.3061 0.2487
0.55 222.0 -0.1689 0.2576
0.55 234.0 0.0974 0.2448
0.55 246.0 -0.0799 0.2871
0.65 138.0 0.2128 0.2229
0.65 150.0 -0.006 0.2434
0.65 210.0 0.0648 0.2287
0.65 222.0 0.0412 0.2322
0.65 234.0 0.0746 0.2218
0.75 150.0 0.0569 0.2468
0.75 162.0 -0.5098 0.2589
0.75 222.0 0.28 0.2313
0.75 234.0 0.1402 0.212
0.75 246.0 0.0079 0.2125
0.85 222.0 -0.4846 0.2074
0.85 234.0 0.1651 0.2312
0.85 246.0 -0.134 0.216
0.35 42.0 0.2804 0.3275
0.55 210.0 -0.1913 0.3654
0.55 222.0 -0.3047 0.3643
0.55 246.0 0.7001 0.262
0.65 126.0 -0.1868 0.3544
0.65 138.0 -0.4274 0.2873
0.65 162.0 0.5123 0.2947
0.65 222.0 -0.2642 0.2797
0.65 234.0 -0.2186 0.2875
0.65 246.0 -0.3905 0.2817
0.75 162.0 0.5957 0.2195
0.75 210.0 -0.2493 0.3547
0.75 222.0 0.5074 0.2376
0.75 234.0 -0.0476 0.3089
0.75 246.0 0.1576 0.2945
0.85 210.0 -0.2665 0.3754
0.85 222.0 -0.1074 0.2992
0.85 234.0 0.1889 0.3391
0.85 246.0 0.3557 0.251
0.85 258.0 -0.0496 0.3729