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Measurement E151M2556

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: 0.0707
Q2: 0.0245 GeV2
W: 1355.0 GeV
Ebeam: 1.0539 GeV
ε: 0.7886

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.25 42.0 0.0156 0.1944
0.25 54.0 -0.0215 0.2355
0.35 30.0 0.3483 0.2361
0.35 42.0 0.3067 0.1576
0.35 54.0 -0.0202 0.1655
0.45 18.0 -0.101 0.2603
0.45 30.0 0.0559 0.1505
0.45 42.0 -0.2137 0.1496
0.45 54.0 0.0435 0.1904
0.45 246.0 -0.2385 0.2529
0.45 258.0 0.1543 0.2165
0.55 30.0 0.0504 0.1789
0.55 42.0 -0.1277 0.1725
0.55 54.0 -0.3528 0.1789
0.55 222.0 -0.4753 0.1868
0.55 234.0 0.1677 0.1605
0.55 246.0 -0.1049 0.1612
0.55 258.0 0.1266 0.1578
0.65 138.0 0.3157 0.2365
0.65 150.0 0.3983 0.1807
0.65 162.0 -0.1341 0.1868
0.65 174.0 -0.233 0.1818
0.65 186.0 -0.1538 0.2409
0.65 210.0 -0.0057 0.2115
0.65 222.0 -0.321 0.174
0.65 234.0 -0.1025 0.1378
0.65 246.0 -0.242 0.129
0.65 258.0 0.0269 0.1384
0.65 270.0 -0.1931 0.251
0.75 126.0 0.5489 0.1982
0.75 138.0 0.0496 0.2019
0.75 150.0 -0.1462 0.1885
0.75 162.0 0.1295 0.1767
0.75 174.0 -0.1519 0.2138
0.75 222.0 -0.1217 0.1925
0.75 234.0 0.2317 0.1388
0.75 246.0 -0.2348 0.1463
0.75 258.0 -0.1787 0.1365
0.75 270.0 0.0734 0.2133
0.85 138.0 0.0459 0.2607
0.85 162.0 -0.0538 0.2373
0.85 222.0 0.0292 0.1828
0.85 234.0 -0.1593 0.1352
0.85 246.0 -0.0318 0.133
0.85 258.0 -0.0919 0.142
0.85 270.0 -0.2776 0.177
0.95 234.0 0.0437 0.2368
0.95 246.0 -0.3118 0.1938
Created in SINP MSU, CLAS Collaboration