CLAS Physics Database

Measurement E151M3586

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: 0.1572
Q2: 0.2915 GeV2
W: 1715.0 GeV
Ebeam: 2.999 GeV
ε: 0.8472

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.45 270.0 0.0197 0.2804
0.45 282.0 -0.2358 0.2756
0.55 90.0 -0.0317 0.259
0.55 102.0 0.0966 0.25
0.65 102.0 0.1925 0.228
0.65 114.0 0.2985 0.2397
0.65 198.0 -0.3951 0.2465
0.65 294.0 -0.0747 0.2444
0.75 78.0 0.222 0.2398
0.75 126.0 0.2065 0.2635
0.75 198.0 -0.1035 0.27
0.75 210.0 -0.1566 0.2742
0.75 222.0 -0.302 0.2418
0.75 234.0 -0.5811 0.1905
0.75 246.0 -0.0269 0.2621
0.85 66.0 -0.2321 0.2314
0.85 78.0 0.1636 0.2017
0.85 90.0 0.1946 0.2393
0.85 102.0 0.189 0.2209
0.85 186.0 0.1216 0.2515
0.85 198.0 0.0541 0.2013
0.85 210.0 0.1476 0.2138
0.85 222.0 -0.2255 0.1986
0.85 234.0 0.0091 0.2306
0.85 246.0 -0.221 0.2137
0.85 258.0 0.0851 0.2354
0.95 114.0 0.1851 0.2655
0.95 174.0 -0.1215 0.2569
0.95 186.0 -0.022 0.2614
0.95 198.0 0.2053 0.2116
0.95 210.0 -0.2064 0.2056
0.95 222.0 -0.2735 0.174
0.95 234.0 -0.0886 0.1943
0.95 246.0 0.134 0.1899
0.95 258.0 -0.1669 0.2516
0.95 270.0 -0.0578 0.2253