CLAS Physics Database

Measurement E151M3036

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: 0.053
Q2: 0.0291 GeV2
W: 1475.0 GeV
Ebeam: 1.9889 GeV
ε: 0.9061

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.35 78.0 -0.1029 0.2614
0.35 282.0 0.1104 0.2638
0.45 66.0 0.5253 0.2219
0.45 78.0 0.1478 0.1999
0.45 90.0 0.1482 0.2201
0.45 270.0 0.2662 0.2283
0.45 282.0 0.0881 0.2138
0.45 294.0 -0.0634 0.2675
0.55 78.0 0.0333 0.2103
0.55 90.0 -0.0945 0.2867
0.55 126.0 -0.0846 0.2748
0.55 138.0 -0.0026 0.2435
0.55 222.0 -0.3729 0.2072
0.55 234.0 -0.1802 0.2059
0.55 270.0 0.2261 0.2616
0.55 282.0 -0.1424 0.2168
0.55 294.0 -0.1183 0.2349
0.65 114.0 -0.2607 0.2402
0.65 126.0 0.0437 0.2186
0.65 150.0 0.1389 0.2539
0.65 210.0 0.3637 0.2482
0.65 222.0 -0.0387 0.2442
0.65 234.0 -0.0413 0.1892
0.65 246.0 -0.2594 0.2412
0.75 78.0 -0.2035 0.2744
0.75 114.0 -0.4453 0.2035
0.75 126.0 -0.2433 0.2211
0.75 138.0 0.0813 0.2503
0.75 150.0 0.1445 0.2676
0.75 198.0 -0.3217 0.2444
0.75 222.0 -0.1111 0.1946
0.75 234.0 0.0997 0.2086
0.75 246.0 0.4086 0.2353
0.75 282.0 0.0906 0.276
0.85 210.0 0.2154 0.2652
0.85 222.0 -0.2754 0.2309
0.85 234.0 -0.1909 0.2074
0.85 246.0 -0.4111 0.2163