CLAS Physics Database

Measurement E151M3388

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: 1.394
Q2: 0.348 GeV2
W: 1205.0 GeV
Ebeam: 2.999 GeV
ε: 0.962

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.35 294.0 -0.0572 0.276
0.45 294.0 0.2799 0.267
0.55 282.0 -0.3852 0.237
0.55 294.0 0.0848 0.2263
0.65 270.0 -0.2495 0.2574
0.65 282.0 -0.4947 0.2144
0.65 294.0 -0.3025 0.1877
0.75 66.0 -0.3316 0.2352
0.75 78.0 -0.1186 0.2364
0.75 90.0 0.1654 0.2305
0.75 270.0 0.0308 0.2504
0.75 282.0 -0.3046 0.233
0.75 294.0 0.1728 0.206
0.85 54.0 -0.0189 0.2782
0.85 66.0 -0.034 0.198
0.85 78.0 0.4142 0.1798
0.85 90.0 0.1182 0.2326
0.85 102.0 -0.2106 0.2296
0.85 306.0 -0.021 0.2793
0.95 42.0 0.1474 0.2398
0.95 54.0 0.1132 0.2616
0.95 102.0 -0.2945 0.2278