CLAS Physics Database

Measurement E151M2773

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: 0.0277
Q2: 0.0121 GeV2
W: 1415.0 GeV
Ebeam: 1.3383 GeV
ε: 0.8386

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.55 222.0 -0.1704 0.1755 0.031
0.65 138.0 -0.0741 0.2349 0.03
0.65 222.0 0.0897 0.2357 0.0301
0.65 234.0 0.0858 0.1928 0.03
0.65 246.0 -0.0928 0.246 0.0301
0.75 150.0 -0.1533 0.2566 0.0302
0.75 222.0 -0.3709 0.2497 0.0309
0.75 234.0 -0.021 0.2728 0.03
0.85 222.0 0.3275 0.2626 0.0307
0.85 234.0 -0.2859 0.2578 0.0305
0.85 246.0 0.2827 0.2484 0.0305
0.55 234.0 0.3624 0.3176 0.0309
0.65 222.0 -0.0534 0.4276 0.03
0.65 234.0 -0.1778 0.3351 0.0302
0.65 246.0 0.5229 0.2648 0.0318
0.75 138.0 -0.3584 0.3453 0.0308
0.75 234.0 0.0093 0.3248 0.03
0.85 210.0 -0.0226 0.3771 0.03
0.85 222.0 0.2653 0.2904 0.0305
0.85 234.0 0.1861 0.2966 0.0302
0.85 246.0 -0.8133 0.1827 0.0341