CLAS Physics Database

Measurement E151M2583

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: 0.1402
Q2: 0.0707 GeV2
W: 1385.0 GeV
Ebeam: 1.0539 GeV
ε: 0.6915

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.25 42.0 0.4266 0.2195
0.35 42.0 -0.1255 0.2169
0.35 54.0 -0.3198 0.2272
0.45 42.0 0.4511 0.1892
0.45 258.0 0.0608 0.2417
0.55 246.0 -0.1617 0.1896
0.55 258.0 0.0378 0.1842
0.55 270.0 0.0421 0.2089
0.65 138.0 -0.3193 0.2156
0.65 150.0 0.1932 0.2506
0.65 186.0 0.0092 0.255
0.65 222.0 -0.2708 0.224
0.65 234.0 -0.1609 0.1924
0.65 246.0 0.068 0.1879
0.65 258.0 -0.2561 0.1641
0.65 270.0 -0.0062 0.1583
0.75 138.0 0.0126 0.1967
0.75 150.0 -0.1822 0.2271
0.75 162.0 -0.1743 0.1886
0.75 174.0 -0.0736 0.2331
0.75 186.0 -0.3314 0.2344
0.75 222.0 -0.1336 0.1981
0.75 234.0 -0.1619 0.1943
0.75 246.0 -0.1235 0.1484
0.75 258.0 -0.1383 0.1421
0.75 270.0 -0.0279 0.1902
0.85 138.0 -0.1949 0.2061
0.85 150.0 0.6611 0.1851
0.85 162.0 0.3111 0.2063
0.85 174.0 0.4401 0.2047
0.85 186.0 -0.2041 0.2541
0.85 234.0 0.0968 0.1909
0.85 246.0 0.0669 0.1635
0.85 258.0 -0.2779 0.1433
0.85 270.0 -0.0712 0.1676
0.85 282.0 -0.1973 0.2174
0.95 126.0 0.1091 0.241
0.95 138.0 -0.3435 0.2498
0.95 246.0 0.203 0.2422
0.95 258.0 -0.0958 0.237
0.95 270.0 -0.4142 0.1848