CLAS Physics Database

Measurement E151M2984

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: 0.433
Q2: 0.1715 GeV2
W: 1355.0 GeV
Ebeam: 1.9889 GeV
ε: 0.9108

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.15 66.0 -0.177 0.2509
0.15 306.0 0.0149 0.2809
0.25 66.0 -0.3755 0.2041
0.25 78.0 -0.0699 0.2582
0.25 306.0 0.0793 0.2625
0.35 66.0 0.3128 0.2519
0.35 282.0 0.3275 0.2604
0.35 294.0 0.2752 0.2032
0.45 66.0 0.2144 0.2549
0.45 78.0 0.1673 0.2183
0.55 78.0 -0.6747 0.2052
0.55 258.0 -0.0823 0.2545
0.55 294.0 -0.064 0.2779
0.65 90.0 -0.2475 0.2285
0.65 102.0 0.2337 0.2047
0.65 114.0 -0.2092 0.2046
0.65 246.0 -0.1231 0.2381
0.65 258.0 -0.0901 0.2173
0.65 270.0 0.1038 0.1868
0.65 282.0 -0.3331 0.2515
0.75 78.0 0.1085 0.2563
0.75 90.0 -0.027 0.1701
0.75 102.0 0.0608 0.1622
0.75 114.0 -0.0331 0.2233
0.75 126.0 -0.0015 0.2046
0.75 138.0 -0.4108 0.2396
0.75 222.0 0.2464 0.2515
0.75 234.0 0.0931 0.2089
0.75 246.0 -0.72 0.1588
0.75 258.0 0.1058 0.1732
0.75 270.0 0.2266 0.1614
0.75 282.0 -0.0145 0.2227
0.85 90.0 -0.0014 0.1998
0.85 102.0 0.1213 0.1637
0.85 114.0 -0.1532 0.1743
0.85 126.0 -0.2096 0.1666
0.85 138.0 0.3396 0.2022
0.85 150.0 -0.0012 0.2715
0.85 210.0 -0.0659 0.2821
0.85 222.0 0.1731 0.202
0.85 234.0 -0.3163 0.1742
0.85 246.0 0.0866 0.1697
0.85 258.0 -0.1356 0.1588
0.85 270.0 0.003 0.1889
0.85 282.0 0.0324 0.1634
0.85 294.0 -0.3272 0.2129
0.95 66.0 0.3815 0.2617
0.95 102.0 0.0608 0.2462
0.95 114.0 0.3225 0.212
0.95 126.0 -0.3754 0.2027
0.95 138.0 0.3088 0.2202
0.95 162.0 -0.3812 0.2662
0.95 222.0 -0.059 0.248
0.95 234.0 -0.0744 0.231
0.95 246.0 -0.282 0.1988
0.95 258.0 -0.0861 0.1691
0.95 270.0 0.3098 0.1765
0.95 282.0 -0.028 0.1896
0.95 294.0 -0.1576 0.2169