CLAS Physics Database

Measurement E151M3386

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: 1.257
Q2: 0.2445 GeV2
W: 1205.0 GeV
Ebeam: 2.999 GeV
ε: 0.9724

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.45 282.0 -0.0011 0.2546
0.45 294.0 -0.1588 0.2439
0.55 282.0 0.0891 0.247
0.55 294.0 0.1086 0.2444
0.65 270.0 -0.046 0.2326
0.65 282.0 -0.0083 0.2435
0.65 294.0 -0.0424 0.2007
0.75 66.0 0.1382 0.2623
0.75 78.0 -0.0617 0.2234
0.75 90.0 0.1307 0.2137
0.75 270.0 0.0586 0.2297
0.75 282.0 0.0853 0.2095
0.75 294.0 -0.2725 0.2217
0.85 54.0 0.1999 0.2549
0.85 66.0 -0.2196 0.2062
0.85 78.0 0.1327 0.1919
0.85 90.0 0.1381 0.1878
0.85 102.0 0.3281 0.1877
0.85 258.0 -0.3071 0.2621
0.85 270.0 -0.1726 0.2384
0.85 282.0 -0.1551 0.2315
0.85 294.0 0.5722 0.2132
0.95 30.0 -0.3633 0.2408
0.95 54.0 0.3172 0.2449
0.95 66.0 0.0281 0.2347
0.95 78.0 -0.2849 0.2082
0.95 90.0 0.4612 0.2107
0.95 102.0 0.1152 0.2439
0.95 114.0 -0.3425 0.2264