CLAS Physics Database

Measurement E151M3454

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: 0.7085
Q2: 0.5925 GeV2
W: 1385.0 GeV
Ebeam: 2.999 GeV
ε: 0.9026

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.55 78.0 0.3183 0.2291
0.55 90.0 0.3985 0.2459
0.55 270.0 -0.1787 0.2639
0.65 78.0 0.219 0.2664
0.65 90.0 -0.435 0.2377
0.65 102.0 0.3972 0.2588
0.65 258.0 -0.5055 0.2286
0.75 78.0 0.2922 0.2557
0.75 90.0 0.2362 0.2187
0.75 102.0 -0.189 0.2678
0.75 258.0 0.0992 0.2863
0.75 282.0 -0.4111 0.252
0.75 294.0 0.2333 0.2433
0.85 78.0 -0.0111 0.2804
0.85 90.0 -0.0834 0.267
0.85 102.0 -0.0226 0.2641
0.85 114.0 0.0898 0.2651
0.85 222.0 -0.4307 0.2455
0.85 234.0 0.1182 0.2527
0.85 246.0 -0.2561 0.2407
0.85 270.0 -0.5582 0.2021
0.85 282.0 0.0361 0.2175
0.85 294.0 0.1561 0.2392
0.85 306.0 -0.0747 0.2332
0.85 318.0 0.0715 0.2509
0.85 330.0 0.1736 0.2622
0.95 222.0 -0.3943 0.2472
0.95 258.0 -0.1258 0.2677
0.95 270.0 0.0754 0.239
0.95 282.0 -0.0671 0.2673