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Measurement E151M3019

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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 : 0.348 GeV2
W : 1415 GeV
ε : 0.8278
Ebeam : 1.9889 GeV
εL: 0.4696 

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
0.65 90 0.052 0.257 0.03
0.65 102 0.2062 0.2686 0.0303
0.65 114 -0.1365 0.2775 0.0301
0.75 90 -0.25 0.2671 0.0304
0.75 114 0.1628 0.2519 0.0302
0.75 234 0.0774 0.2609 0.03
0.75 270 0.4435 0.2055 0.0313
0.85 66 -0.1273 0.2676 0.0301
0.85 102 0.0657 0.261 0.03
0.85 114 -0.2069 0.2497 0.0303
0.85 258 -0.4826 0.2305 0.0315
0.85 270 -0.1354 0.2671 0.0301
0.85 282 -0.2688 0.2246 0.0305
0.95 126 0.2225 0.2671 0.0303
0.95 222 -0.4655 0.2803 0.0314
0.95 270 0.1321 0.2671 0.0301
0.95 294 -0.4466 0.2322 0.0313
0.95 306 -0.4823 0.2285 0.0315