CLAS Physics Database

Measurement E151M3549

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: 0.2659
Q2: 0.4155 GeV2
W: 1625.0 GeV
Ebeam: 2.999 GeV
ε: 0.8602

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.55 102.0 -0.0801 0.2833
0.55 114.0 -0.3928 0.2494
0.55 294.0 -0.0963 0.2569
0.65 102.0 0.0239 0.2299
0.65 114.0 0.0027 0.2719
0.65 222.0 0.0225 0.2509
0.65 306.0 0.6346 0.2184
0.75 54.0 0.0071 0.276
0.75 66.0 0.3813 0.2362
0.75 78.0 -0.2537 0.25
0.75 102.0 0.1335 0.2183
0.75 114.0 -0.058 0.2595
0.75 222.0 -0.3649 0.2241
0.75 234.0 0.1958 0.2635
0.75 246.0 -0.1033 0.2483
0.75 258.0 -0.0313 0.274
0.85 54.0 0.2358 0.2356
0.85 66.0 0.1189 0.2202
0.85 78.0 -0.1743 0.254
0.85 186.0 -0.5109 0.2245
0.85 198.0 -0.2858 0.2512
0.85 210.0 -0.0295 0.2416
0.85 222.0 0.1671 0.1906
0.85 234.0 -0.1288 0.2351
0.85 246.0 -0.1059 0.1854
0.85 258.0 0.0009 0.2292
0.85 270.0 0.2419 0.2331
0.95 186.0 -0.2747 0.2668
0.95 210.0 -0.3402 0.2367
0.95 222.0 -0.3585 0.2618
0.95 234.0 -0.3337 0.2363
0.95 246.0 0.0516 0.2123
0.95 258.0 0.4152 0.2085
0.95 270.0 -0.2938 0.2107
0.95 282.0 0.0503 0.1985
0.95 294.0 -0.0265 0.2015
0.95 306.0 -0.1644 0.2126
0.95 318.0 0.1818 0.2414