CLAS Physics Database

Measurement E151M2530

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: 0.0381
Q2: 0.0101 GeV2
W: 1325.0 GeV
Ebeam: 1.0539 GeV
ε: 0.84

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.35 42.0 -0.1343 0.2039
0.35 54.0 0.2625 0.217
0.45 42.0 0.2394 0.1981
0.45 54.0 -0.1118 0.2297
0.55 30.0 -0.0441 0.2161
0.55 42.0 -0.0226 0.1554
0.55 54.0 0.2685 0.171
0.55 138.0 0.2044 0.2592
0.55 150.0 -0.3742 0.2131
0.55 234.0 0.3097 0.1768
0.55 246.0 0.2661 0.1847
0.55 258.0 -0.3673 0.1693
0.55 270.0 -0.0907 0.2658
0.65 42.0 -0.1937 0.2273
0.65 54.0 0.233 0.2033
0.65 150.0 -0.0589 0.2166
0.65 162.0 -0.5656 0.191
0.65 198.0 -0.0634 0.2682
0.65 222.0 0.1929 0.1992
0.65 234.0 0.1855 0.1543
0.65 246.0 0.1214 0.1449
0.65 258.0 -0.2458 0.1687
0.75 150.0 -0.0892 0.2421
0.75 162.0 -0.1075 0.1916
0.75 174.0 -0.3316 0.2551
0.75 210.0 -0.1458 0.2306
0.75 222.0 0.1804 0.2092
0.75 234.0 0.1986 0.1652
0.75 246.0 0.0581 0.147
0.75 258.0 0.007 0.1732
0.85 222.0 -0.3088 0.1708
0.85 234.0 0.0514 0.1756
0.85 246.0 -0.1137 0.1638
0.85 258.0 0.0517 0.1633