CLAS Physics Database

Measurement E151M2956

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: 0.7229
Q2: 0.2445 GeV2
W: 1295.0 GeV
Ebeam: 1.9889 GeV
ε: 0.91

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.15 66.0 0.5101 0.2273 0.0317
0.45 66.0 0.1889 0.274 0.0302
0.55 282.0 -0.0995 0.2471 0.0301
0.65 102.0 0.4248 0.2474 0.0312
0.65 258.0 -0.2296 0.2383 0.0303
0.65 270.0 -0.054 0.229 0.03
0.65 282.0 0.294 0.2051 0.0306
0.75 78.0 0.487 0.2159 0.0315
0.75 90.0 0.1462 0.2346 0.0301
0.75 102.0 -0.0385 0.2411 0.03
0.75 114.0 -0.0379 0.2412 0.03
0.75 246.0 -0.0338 0.2863 0.03
0.75 258.0 0.0792 0.2336 0.03
0.75 270.0 -0.2013 0.2028 0.0303
0.75 282.0 0.5359 0.2121 0.0319
0.75 294.0 -0.0497 0.205 0.03
0.85 78.0 -0.3722 0.2496 0.0309
0.85 90.0 -0.4156 0.1955 0.0311
0.85 102.0 0.0243 0.2073 0.03
0.85 114.0 0.7341 0.1611 0.0334
0.85 126.0 -0.0798 0.2697 0.03
0.85 234.0 0.1354 0.2627 0.0301
0.85 246.0 -0.3801 0.2355 0.0309
0.85 258.0 -0.1262 0.2563 0.0301
0.85 270.0 -0.1409 0.2338 0.0301
0.85 282.0 0.1274 0.2 0.0301
0.85 294.0 0.0431 0.2318 0.03
0.95 78.0 -0.1417 0.2683 0.0301
0.95 90.0 0.0507 0.2589 0.03
0.95 102.0 0.1707 0.2253 0.0302
0.95 114.0 -0.0144 0.2505 0.03
0.95 126.0 0.0795 0.2682 0.03
0.95 138.0 -0.0936 0.2609 0.0301
0.95 150.0 0.0922 0.2415 0.0301
0.95 258.0 0.2497 0.2616 0.0304
0.95 270.0 0.359 0.239 0.0308
0.95 282.0 0.1475 0.2846 0.0301