CLAS Physics Database

Measurement E151M3605

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: 0.0463
Q2: 0.0844 GeV2
W: 1775.0 GeV
Ebeam: 2.999 GeV
ε: 0.8627

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.55 102.0 0.1997 0.2733
0.55 114.0 -0.7229 0.194
0.55 126.0 -0.4517 0.237
0.55 198.0 0.2882 0.2558
0.55 258.0 0.2079 0.2728
0.55 270.0 -0.0351 0.2497
0.65 114.0 0.2078 0.2554
0.65 126.0 0.2679 0.2031
0.65 138.0 -0.2491 0.2653
0.65 174.0 -0.3329 0.2526
0.65 186.0 0.1518 0.2508
0.65 198.0 0.2106 0.2532
0.65 210.0 -0.0455 0.2308
0.65 270.0 0.38 0.2459
0.65 282.0 0.1665 0.2403
0.75 90.0 0.2216 0.2585
0.75 102.0 -0.5337 0.2134
0.75 114.0 1.0206 1.0206
0.75 126.0 0.4469 0.2437
0.75 186.0 0.0854 0.2247
0.75 198.0 -0.2722 0.1986
0.75 210.0 -0.0579 0.2555
0.75 222.0 0.1232 0.2205
0.75 234.0 0.4178 0.219
0.75 270.0 -0.1334 0.2069
0.75 282.0 -0.0046 0.2317
0.85 90.0 0.2143 0.257
0.85 102.0 0.0247 0.1792
0.85 114.0 -0.0143 0.1816
0.85 126.0 -0.0641 0.2363
0.85 138.0 0.2974 0.2682
0.85 174.0 0.4007 0.2259
0.85 186.0 -0.4632 0.1694
0.85 198.0 -0.0956 0.2033
0.85 210.0 -0.1714 0.1842
0.85 222.0 0.0555 0.189
0.85 234.0 0.0296 0.2605
0.85 270.0 -0.0831 0.2368
0.85 282.0 0.0862 0.268
0.95 198.0 -0.0608 0.2812
0.95 210.0 -0.0764 0.2456