CLAS Physics Database

Measurement E151M2843

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: 0.1204
Q2: 0.1205 GeV2
W: 1505.0 GeV
Ebeam: 1.3383 GeV
ε: 0.6429

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.55 222.0 0.5618 0.2665
0.65 126.0 0.035 0.2903
0.65 138.0 -0.5169 0.2423
0.65 222.0 0.1599 0.2537
0.65 234.0 0.5722 0.2253
0.65 246.0 -0.0141 0.2063
0.75 126.0 0.2157 0.2194
0.75 138.0 -0.547 0.2375
0.75 222.0 -0.1989 0.2043
0.75 246.0 -0.0551 0.2715
0.85 234.0 -0.2255 0.2158
0.85 246.0 0.0355 0.2301
0.85 258.0 -0.3939 0.2493
0.95 270.0 0.3276 0.2707
0.55 234.0 -0.8051 0.1731
0.65 210.0 0.2971 0.36
0.65 222.0 -0.5277 0.279
0.65 234.0 0.4586 0.3218
0.65 246.0 -0.1761 0.3329
0.75 138.0 0.364 0.351
0.75 258.0 -0.4502 0.3166
0.85 222.0 -0.9176 0.1284
0.85 234.0 0.0965 0.3614
0.85 246.0 -0.1743 0.3386
0.85 258.0 0.4387 0.265
0.95 246.0 -0.2546 0.4535
0.95 270.0 -0.4116 0.3906