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Measurement E151M2613

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: 0.0223
Q2: 0.0143 GeV2
W: 1445.0 GeV
Ebeam: 1.0539 GeV
ε: 0.6575

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.25 42.0 0.0993 0.2262
0.25 54.0 0.2091 0.2282
0.35 30.0 0.4803 0.222
0.35 42.0 0.1895 0.1831
0.35 54.0 -0.0266 0.1477
0.35 66.0 0.0782 0.2444
0.45 30.0 0.1684 0.2493
0.45 42.0 -0.2273 0.16
0.45 54.0 -0.0935 0.158
0.45 66.0 0.2017 0.1836
0.45 222.0 -0.1694 0.2374
0.45 234.0 0.169 0.2111
0.45 246.0 0.2974 0.239
0.55 30.0 0.4426 0.2071
0.55 42.0 0.0808 0.1996
0.55 54.0 -0.0802 0.1502
0.55 66.0 0.1493 0.235
0.55 150.0 -0.3455 0.2272
0.55 174.0 -0.1063 0.2552
0.55 222.0 0.0862 0.2137
0.55 234.0 -0.5037 0.1629
0.55 246.0 -0.239 0.1626
0.55 258.0 0.0728 0.2196
0.65 54.0 -0.0789 0.2691
0.65 150.0 -0.0784 0.192
0.65 162.0 0.0283 0.2104
0.65 174.0 0.0255 0.2256
0.65 210.0 -0.0703 0.2549
0.65 222.0 0.0013 0.177
0.65 234.0 -0.135 0.1751
0.65 246.0 -0.1223 0.1687
0.65 258.0 0.2376 0.2198
0.75 30.0 -0.2083 0.2318
0.75 138.0 0.3136 0.209
0.75 150.0 0.1598 0.2459
0.75 162.0 -0.3072 0.2437
0.75 222.0 -0.0131 0.1835
0.75 234.0 -0.1716 0.1689
0.75 246.0 0.089 0.1689
0.75 258.0 0.0937 0.2027
0.85 210.0 -0.1173 0.2332
0.85 222.0 0.0957 0.1856
0.85 234.0 -0.1525 0.1563
0.85 246.0 -0.1085 0.1604
0.85 258.0 0.2003 0.2147
0.95 246.0 -0.1792 0.2567
Created in SINP MSU, CLAS Collaboration