CLAS Physics Database

Measurement E151M2584

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: 0.1594
Q2: 0.0844 GeV2
W: 1385.0 GeV
Ebeam: 1.0539 GeV
ε: 0.6751

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.25 42.0 0.1617 0.2006 0.0302
0.55 234.0 -0.0597 0.2467 0.03
0.55 246.0 -0.0266 0.2394 0.03
0.55 258.0 -0.0583 0.1989 0.03
0.65 150.0 -0.0106 0.242 0.03
0.65 234.0 -0.0326 0.2105 0.03
0.65 246.0 -0.1279 0.1956 0.0301
0.65 258.0 -0.2036 0.1933 0.0303
0.65 270.0 -0.4287 0.2003 0.0312
0.75 138.0 -0.0131 0.2444 0.03
0.75 150.0 0.0578 0.2271 0.03
0.75 162.0 0.1469 0.2443 0.0301
0.75 174.0 0.2155 0.2253 0.0303
0.75 234.0 -0.4682 0.1994 0.0314
0.75 246.0 -0.1668 0.1848 0.0302
0.75 258.0 -0.2749 0.1798 0.0305
0.75 270.0 -0.3869 0.1802 0.031
0.85 126.0 0.3085 0.2473 0.0306
0.85 138.0 0.3949 0.2428 0.031
0.85 150.0 0.0536 0.2535 0.03
0.85 162.0 -0.0601 0.2615 0.03
0.85 174.0 0.0276 0.2236 0.03
0.85 234.0 -0.4732 0.1982 0.0315
0.85 246.0 -0.1068 0.1761 0.0301
0.85 258.0 0.2869 0.1816 0.0305
0.85 270.0 -0.065 0.1535 0.03
0.85 282.0 -0.0618 0.1907 0.03
0.95 258.0 0.2409 0.2093 0.0304
0.95 270.0 -0.3155 0.2456 0.0307