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Measurement E151M2941

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: 0.8506
Q2: 0.2445 GeV2
W: 1265.0 GeV
Ebeam: 1.9889 GeV
ε: 0.9187

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.25 66.0 0.3947 0.2454 0.031
0.35 66.0 0.1845 0.266 0.0302
0.55 270.0 -0.1522 0.2511 0.0302
0.55 282.0 0.1149 0.266 0.0301
0.65 270.0 0.1161 0.2653 0.0301
0.65 282.0 -0.2026 0.2173 0.0303
0.65 294.0 0.1114 0.2073 0.0301
0.75 78.0 0.1122 0.257 0.0301
0.75 90.0 -0.415 0.2057 0.0311
0.75 102.0 -0.2673 0.2514 0.0305
0.75 246.0 -0.2853 0.2572 0.0305
0.75 258.0 -0.3627 0.2222 0.0309
0.75 270.0 -0.0118 0.1822 0.03
0.75 282.0 -0.1291 0.2265 0.0301
0.75 294.0 -0.1992 0.2547 0.0303
0.85 78.0 -0.0762 0.2051 0.03
0.85 90.0 -0.1287 0.252 0.0301
0.85 102.0 0.3142 0.1898 0.0307
0.85 114.0 -0.1491 0.1876 0.0301
0.85 126.0 -0.195 0.2415 0.0303
0.85 246.0 -0.0533 0.2382 0.03
0.85 258.0 -0.0597 0.2324 0.03
0.85 270.0 0.4401 0.2285 0.0313
0.85 282.0 -0.1637 0.2369 0.0302
0.85 294.0 0.2901 0.2153 0.0306
0.95 78.0 0.1611 0.2471 0.0302
0.95 90.0 -0.3488 0.258 0.0308
0.95 102.0 0.274 0.2142 0.0305
0.95 114.0 0.2218 0.2563 0.0303
0.95 126.0 0.6982 0.1878 0.0331
0.95 138.0 -0.2366 0.24 0.0304
0.95 270.0 -0.0718 0.2728 0.03
0.95 282.0 -0.0647 0.2366 0.03
0.95 294.0 -0.231 0.2096 0.0304
Created in SINP MSU, CLAS Collaboration