CLAS Physics Database

Measurement E151M2563

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: 0.1982
Q2: 0.0844 GeV2
W: 1355.0 GeV
Ebeam: 1.0539 GeV
ε: 0.7208

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.25 42.0 0.4406 0.1961
0.45 270.0 -0.4321 0.2042
0.55 234.0 0.0961 0.256
0.55 246.0 -0.1982 0.1968
0.55 258.0 -0.4502 0.2144
0.55 270.0 0.0204 0.2314
0.65 138.0 -0.1072 0.252
0.65 222.0 -0.106 0.253
0.65 234.0 0.0523 0.2023
0.65 246.0 0.056 0.1877
0.65 258.0 -0.045 0.1544
0.65 270.0 -0.0265 0.1956
0.75 126.0 0.3157 0.2195
0.75 138.0 0.2513 0.2079
0.75 150.0 0.0542 0.2111
0.75 162.0 0.409 0.1997
0.75 222.0 -0.2748 0.242
0.75 234.0 0.1571 0.1734
0.75 246.0 0.1479 0.1521
0.75 258.0 -0.0025 0.1848
0.75 270.0 -0.1102 0.1944
0.75 282.0 -0.115 0.1988
0.85 126.0 0.1674 0.2048
0.85 138.0 0.3922 0.1788
0.85 150.0 -0.1634 0.2151
0.85 162.0 0.1547 0.1989
0.85 186.0 0.1615 0.2202
0.85 198.0 -0.5288 0.2117
0.85 234.0 -0.2842 0.1989
0.85 246.0 0.1154 0.1763
0.85 258.0 0.0593 0.1437
0.85 270.0 -0.1263 0.1595
0.85 282.0 -0.1537 0.1718
0.95 102.0 -0.0082 0.2291
0.95 114.0 0.2714 0.2109
0.95 126.0 0.1188 0.2405
0.95 138.0 0.1875 0.2378
0.95 150.0 0.1346 0.2484
0.95 174.0 0.0328 0.2601
0.95 246.0 0.2628 0.2434
0.95 270.0 -0.064 0.2517