CLAS Physics Database

Measurement E151M2645

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: 0.2317
Q2: 0.0245 GeV2
W: 1205.0 GeV
Ebeam: 1.3383 GeV
ε: 0.9559

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.55 258.0 -0.208 0.1976
0.55 270.0 0.0084 0.168
0.55 282.0 -0.2171 0.2047
0.65 246.0 0.033 0.1872
0.65 258.0 0.2849 0.1514
0.65 270.0 0.0145 0.1732
0.75 150.0 -0.1146 0.3534
0.75 174.0 -0.2741 0.3275
0.75 186.0 0.325 0.3794
0.75 234.0 -0.6014 0.2472
0.75 246.0 -0.2848 0.2939
0.75 258.0 -0.1055 0.307
0.75 270.0 -0.0552 0.3279
0.85 138.0 0.1179 0.3729
0.85 150.0 -0.4212 0.2599
0.85 162.0 0.2071 0.3605
0.85 174.0 -0.3363 0.2723
0.85 186.0 0.087 0.3819
0.85 198.0 -0.2573 0.3085
0.85 222.0 0.3551 0.3025
0.65 282.0 0.3858 0.2664
0.75 246.0 0.0327 0.239
0.75 258.0 -0.2311 0.212
0.75 270.0 -0.1568 0.214
0.85 150.0 -0.0959 0.2595
0.85 162.0 0.0735 0.2361
0.85 174.0 0.2693 0.2144
0.85 186.0 -0.0448 0.1915
0.85 198.0 0.0619 0.2292