CLAS Physics Database

Measurement E151M3105

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: 0.1065
Q2: 0.1205 GeV2
W: 1595.0 GeV
Ebeam: 1.9889 GeV
ε: 0.7989

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.45 270.0 -0.2038 0.2653
0.45 282.0 0.0938 0.2831
0.45 294.0 -0.0192 0.2707
0.55 114.0 -0.1598 0.2625
0.55 126.0 -0.0289 0.24
0.55 282.0 0.4363 0.2656
0.65 114.0 0.1293 0.266
0.65 126.0 0.0809 0.2709
0.65 138.0 -0.2659 0.2719
0.65 294.0 -0.1278 0.2322
0.75 114.0 -0.1937 0.2655
0.75 126.0 0.0542 0.2776
0.75 198.0 -0.3958 0.2457
0.75 210.0 -0.3677 0.235
0.75 222.0 0.3288 0.2448
0.75 234.0 0.2067 0.2422
0.75 246.0 0.1103 0.2746
0.85 90.0 -0.3253 0.2197
0.85 222.0 -0.0817 0.2287
0.85 234.0 -0.1969 0.1984
0.95 114.0 -0.6921 0.1801
0.95 222.0 0.0358 0.2428
0.95 234.0 -0.0707 0.2727
0.95 258.0 -0.1067 0.2774