CLAS Physics Database

Measurement E151M2550

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: 0.0258
Q2: 0.0084 GeV2
W: 1355.0 GeV
Ebeam: 1.0539 GeV
ε: 0.8064

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.35 42.0 -0.0218 0.2378
0.35 54.0 -0.0417 0.2489
0.45 42.0 -0.0648 0.2277
0.45 54.0 -0.2191 0.1942
0.55 30.0 0.1264 0.236
0.55 42.0 -0.0093 0.1872
0.55 54.0 -0.5948 0.1666
0.55 222.0 0.1659 0.2452
0.55 234.0 0.39 0.1849
0.55 246.0 -0.0057 0.2195
0.55 258.0 -0.4337 0.2077
0.65 30.0 0.1823 0.2543
0.65 42.0 -0.0934 0.1988
0.65 54.0 0.0656 0.1971
0.65 150.0 -0.0314 0.2451
0.65 162.0 0.2379 0.2294
0.65 174.0 0.0218 0.239
0.65 222.0 -0.2943 0.1792
0.65 234.0 -0.1112 0.1625
0.65 246.0 -0.3318 0.1819
0.65 258.0 -0.3873 0.2085
0.75 138.0 0.2503 0.2319
0.75 150.0 0.0422 0.2479
0.75 210.0 -0.1899 0.2302
0.75 222.0 0.0536 0.1796
0.75 234.0 -0.0399 0.1666
0.75 246.0 -0.1707 0.1464
0.75 258.0 -0.2345 0.2183
0.85 222.0 -0.2905 0.1699
0.85 234.0 0.1027 0.187
0.85 246.0 -0.2195 0.1782
0.85 258.0 0.3997 0.2173