CLAS Physics Database

Measurement E151M3102

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: 0.0679
Q2: 0.0707 GeV2
W: 1595.0 GeV
Ebeam: 1.9889 GeV
ε: 0.8195

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.35 270.0 0.1959 0.248
0.35 282.0 -0.1141 0.2424
0.45 78.0 0.1325 0.2551
0.45 126.0 -0.0926 0.2776
0.45 270.0 0.0687 0.2142
0.45 282.0 0.4323 0.2484
0.55 114.0 0.0436 0.2644
0.55 126.0 -0.2825 0.2342
0.55 210.0 -0.1436 0.2735
0.55 258.0 0.1022 0.2775
0.55 270.0 -0.1847 0.2526
0.55 282.0 -0.3842 0.2246
0.65 114.0 0.3173 0.2144
0.65 126.0 0.0165 0.2355
0.65 138.0 -0.1996 0.2083
0.65 210.0 0.19 0.2353
0.65 234.0 -0.4248 0.2155
0.65 282.0 0.197 0.2442
0.65 294.0 -0.0372 0.2438
0.75 66.0 -0.0072 0.2703
0.75 126.0 -0.1096 0.254
0.75 138.0 0.1283 0.2133
0.75 198.0 0.0468 0.2412
0.75 210.0 -0.3599 0.2603
0.75 222.0 -0.2134 0.2174
0.75 234.0 0.1248 0.2203
0.75 246.0 0.5057 0.2092
0.75 270.0 0.1636 0.2324
0.75 282.0 -0.1128 0.2248
0.75 294.0 -0.2541 0.204
0.85 102.0 0.1342 0.2198
0.85 114.0 -0.0837 0.2615
0.85 126.0 0.0725 0.2806
0.85 198.0 0.2065 0.2527
0.85 210.0 0.1035 0.2125
0.85 222.0 -0.0387 0.2009
0.85 234.0 -0.2469 0.2022
0.85 246.0 -0.1783 0.2358
0.95 234.0 0.1122 0.267
0.95 246.0 -0.3176 0.2586