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Measurement E151M3550

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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 : 0.496 GeV2
W : 1625 GeV
ε : 0.8443
Ebeam : 2.999 GeV
εL: 0.2897 

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
0.55 90 0.2847 0.2748 0.0305
0.65 102 0.393 0.2635 0.031
0.65 114 -0.6076 0.2316 0.0324
0.75 234 0.0689 0.2527 0.03
0.75 258 0.1532 0.2682 0.0302
0.85 66 -0.5023 0.2423 0.0316
0.85 78 -0.1573 0.2893 0.0302
0.85 222 -0.3342 0.2532 0.0307
0.85 234 -0.0499 0.2392 0.03
0.85 246 -0.3039 0.2148 0.0306
0.85 258 0.1342 0.2284 0.0301
0.85 270 -0.4475 0.2458 0.0313
0.85 282 -0.0384 0.2775 0.03
0.95 234 -0.265 0.2347 0.0305
0.95 246 -0.0257 0.2548 0.03
0.95 258 -0.0281 0.2737 0.03
0.95 270 0.1198 0.2597 0.0301
0.95 282 -0.3965 0.2534 0.031
0.95 294 0.2948 0.2387 0.0306
0.95 306 -0.6446 0.1981 0.0327
0.95 318 0.0167 0.2734 0.03