CLAS Physics Database

Measurement E151M2855

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: 0.0424
Q2: 0.0415 GeV2
W: 1535.0 GeV
Ebeam: 1.3383 GeV
ε: 0.6677

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.55 138.0 0.2536 0.2237
0.55 210.0 -0.0201 0.2776
0.55 222.0 -0.4075 0.2474
0.55 234.0 -0.0982 0.2555
0.55 246.0 0.1462 0.2194
0.65 138.0 0.1453 0.2349
0.65 150.0 -0.0428 0.23
0.65 162.0 -0.1023 0.2641
0.65 222.0 0.0375 0.2093
0.65 234.0 0.0827 0.2116
0.65 246.0 0.0353 0.2771
0.75 222.0 0.3085 0.2241
0.75 234.0 0.1698 0.2207
0.75 246.0 0.0808 0.2334
0.85 126.0 -0.0586 0.2754
0.85 210.0 0.383 0.2645
0.85 222.0 -0.0969 0.2523
0.85 234.0 -0.1475 0.2128
0.85 246.0 0.1872 0.2096
0.45 30.0 -0.7252 0.231
0.45 234.0 0.3004 0.2786
0.55 126.0 0.1582 0.3399
0.55 138.0 -0.3285 0.315
0.55 210.0 -0.2804 0.2985
0.55 222.0 0.5317 0.3449
0.55 234.0 -0.0624 0.3452
0.55 246.0 0.2192 0.3217
0.65 150.0 0.4723 0.3461
0.65 210.0 -0.0081 0.3327
0.65 222.0 -0.2584 0.3684
0.65 234.0 0.4479 0.2403
0.65 246.0 -0.6097 0.2294
0.75 162.0 0.1116 0.3756
0.75 210.0 0.4315 0.3755
0.75 222.0 -0.4512 0.3539
0.75 234.0 -0.2311 0.2984
0.75 246.0 0.2669 0.3538
0.85 210.0 -0.3003 0.3197
0.85 222.0 -0.135 0.3057
0.85 234.0 -0.1854 0.3007
0.85 246.0 -0.327 0.2561
0.85 258.0 -0.2296 0.3723
0.95 234.0 0.0304 0.434
0.95 246.0 -0.0867 0.3997