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Measurement E151M2509

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: 0.0564
Q2: 0.0121 GeV2
W: 1295.0 GeV
Ebeam: 1.0539 GeV
ε: 0.8686

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.25 42.0 0.2129 0.2351
0.35 42.0 -0.2649 0.1888
0.35 54.0 -0.0106 0.2106
0.35 66.0 0.6684 0.1787
0.45 42.0 -0.0037 0.2105
0.45 258.0 0.1254 0.2274
0.55 30.0 0.4002 0.2059
0.55 42.0 -0.0714 0.1825
0.55 54.0 -0.2298 0.245
0.55 222.0 0.2334 0.2336
0.55 234.0 -0.0347 0.1947
0.55 246.0 0.0656 0.153
0.55 258.0 -0.1783 0.1627
0.55 270.0 0.0772 0.2036
0.65 138.0 0.3392 0.2352
0.65 150.0 0.2126 0.203
0.65 162.0 -0.1968 0.2177
0.65 174.0 -0.1431 0.2506
0.65 186.0 0.5662 0.2474
0.65 198.0 0.4718 0.233
0.65 210.0 0.3096 0.2146
0.65 222.0 -0.1051 0.1878
0.65 234.0 0.1795 0.1426
0.65 246.0 0.0231 0.1241
0.65 258.0 -0.3148 0.1434
0.65 270.0 0.1058 0.1709
0.75 138.0 0.0592 0.235
0.75 150.0 0.1267 0.1905
0.75 162.0 0.2289 0.1826
0.75 174.0 0.0666 0.1945
0.75 186.0 -0.0932 0.2244
0.75 210.0 0.1045 0.2201
0.75 222.0 -0.028 0.1726
0.75 234.0 -0.1017 0.1469
0.75 246.0 -0.1942 0.132
0.75 258.0 0.1433 0.1442
0.75 270.0 0.1997 0.1935
0.85 162.0 0.1579 0.2504
0.85 210.0 -0.2791 0.2284
0.85 222.0 -0.0807 0.2136
0.85 234.0 -0.1638 0.1433
0.85 246.0 -0.0578 0.148
0.85 258.0 -0.2575 0.1485
0.85 270.0 0.0523 0.2247
Created in SINP MSU, CLAS Collaboration