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Measurement E151M3122

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Experiment: EG4, 2016

Spokespersons: Xiaochao Zheng

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).

No publications available for this experiment

Quantity measured: ALU,
Beam asymmetry.
Beam: e, polarization: longitudinal
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π+n, polarization: none

Q2 : 0.1435 GeV2
W : 1625 GeV
ε : 0.7644
Ebeam : 1.9889 GeV
εL: 0.1066 

Select data slice:
cos(θπ+) =
Observable quantity measured (Y axis): ALU,
Plot measurement data

Parameter (X axis): φ(π+), degrees

Click here to get data in text file, delimited with tabs.

Measured data:

cos(θπ+) φ(π+),
degrees
ALU Stat. error Syst. error
0.45 270 0.0033 0.256 0.03
0.55 126 0.1128 0.2661 0.0301
0.55 270 0.2976 0.2813 0.0306
0.65 114 -0.235 0.2371 0.0304
0.65 222 0.1375 0.2589 0.0301
0.65 294 -0.4376 0.2258 0.0313
0.75 126 0.0812 0.2635 0.03
0.75 210 -0.0023 0.2593 0.03
0.75 222 0.6604 0.19 0.0328
0.75 234 0.3755 0.2082 0.0309
0.85 90 0.3159 0.2412 0.0307
0.85 114 -0.002 0.2617 0.03
0.85 210 -0.3204 0.2336 0.0307
0.85 222 -0.2642 0.2731 0.0305
0.85 234 0.1405 0.2731 0.0301
0.85 258 0.1132 0.2844 0.0301