CLAS Physics Database

Measurement E151M3354

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: 0.0473
Q2: 0.0593 GeV2
W: 1655.0 GeV
Ebeam: 2.2596 GeV
ε: 0.8345

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.45 270.0 0.3902 0.235
0.45 282.0 0.0237 0.1817
0.65 78.0 -0.183 0.2507
0.65 126.0 -0.1223 0.2236
0.65 210.0 0.0031 0.2119
0.75 66.0 0.0144 0.2512
0.75 210.0 -0.0379 0.2459
0.75 222.0 -0.0095 0.2325
0.75 234.0 0.5341 0.2239
0.75 270.0 0.2871 0.1853
0.75 282.0 0.1879 0.2219
0.75 294.0 -0.0183 0.255
0.85 102.0 0.3309 0.2207
0.85 114.0 -0.0732 0.1907
0.85 198.0 -0.152 0.24
0.85 210.0 0.2233 0.2018
0.85 222.0 -0.0744 0.1861
0.55 126.0 0.0594 0.2331
0.55 270.0 0.305 0.2299
0.65 198.0 0.1438 0.2611
0.65 282.0 -0.1683 0.2401
0.75 198.0 0.1255 0.2457
0.75 210.0 0.2075 0.2258
0.75 222.0 0.3673 0.219
0.75 234.0 -0.1733 0.2385
0.75 270.0 -0.0263 0.1935
0.75 282.0 -0.3182 0.2115
0.85 102.0 0.079 0.2516
0.85 114.0 0.0697 0.2027
0.85 126.0 -0.0665 0.2291
0.85 198.0 0.1249 0.2217
0.85 210.0 0.1889 0.242
0.85 222.0 -0.2233 0.2554
0.85 234.0 0.1264 0.2612