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Z'-boson mass prediction based on neural network s analysis of LEP2 data

Z'-boson mass prediction based on neural network s analysis of LEP2 data. A.N.Buryk and V.V.Skalozub. Z'-boson mass prediction based on neural network s analysis of LEP2 data A.N.Buryk and V.V.Skalozub. Many theories predict Z’-boson existance.

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Z'-boson mass prediction based on neural network s analysis of LEP2 data

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  1. Z'-boson mass predictionbased on neural networks analysis of LEP2 data A.N.Buryk and V.V.Skalozub

  2. Z'-boson mass prediction based on neural networks analysis of LEP2 data A.N.Buryk and V.V.Skalozub Many theories predict Z’-boson existance. There are many methods to search for it. But the lack of accessible nowadays experimental data doesn’t allow to find it.

  3. Z'-boson mass prediction based on neural networks analysis of LEP2 data A.N.Buryk and V.V.Skalozub Search for Z'-bosonusing neural networkswithin LEP2 data set A.N.Buryk and V.V.Skalozub Searching for Z' is one of the goals of experiments at LHC Z’-boson mass prediction is needed with the highest accessible precision

  4. Z'-boson mass prediction based on neural networks analysis of LEP2 data A.N.Buryk and V.V.Skalozub Search for Z'-bosonusing neural networkswithin LEP2 data set A.N.Buryk and V.V.Skalozub One-parameter fit model-independent searchLEP2 data set Model-dependent searchsearch at CDF II

  5. Z'-boson mass prediction based on neural networks analysis of LEP2 data A.N.Buryk and V.V.Skalozub Search for Z'-bosonusing neural networkswithin LEP2 data set A.N.Buryk and V.V.Skalozub Starting point for this work was “Model-independent search for the Abelian Z’-boson in the Bhabha process”, made by A.V.Gulov and V.V.Skalozub

  6. Z'-boson mass prediction based on neural networks analysis of LEP2 data A.N.Buryk and V.V.Skalozub Search for Z'-bosonusing neural networkswithin LEP2 data set A.N.Buryk and V.V.Skalozub

  7. Z'-boson mass prediction based on neural networks analysis of LEP2 data A.N.Buryk and V.V.Skalozub Search for Z'-bosonusing neural networkswithin LEP2 data set A.N.Buryk and V.V.Skalozub The Bhabha process was investigatedFor this process we have only one equation from the third formula: The leading-order differential cross-section of the Bhabha process depends on next combinations of Z’-boson couplings: Taking into account RG equations they are reduced to three parameters:

  8. Z'-boson mass prediction based on neural networks analysis of LEP2 data A.N.Buryk and V.V.Skalozub

  9. Z'-boson mass prediction based on neural networks analysis of LEP2 data A.N.Buryk and V.V.Skalozub Search for Z'-bosonusing neural networkswithin LEP2 data set A.N.Buryk and V.V.Skalozub Neural network analysisNeural network was trained to discard the data,which are associated with a backgroundSignal: the differential cross-section for the Bhabha process obtained within the SM, extended by the Z‘-bosonBackground: the deviation from the signal by thevalue, equals to the redoubled uncertainty of LEP2 experimental data

  10. Z'-boson mass prediction based on neural networks analysis of LEP2 data A.N.Buryk and V.V.Skalozub Search for Z'-bosonusing neural networkswithin LEP2 data set A.N.Buryk and V.V.Skalozub

  11. Z'-boson mass prediction based on neural networks analysis of LEP2 data A.N.Buryk and V.V.Skalozub Search for Z'-bosonusing neural networkswithin LEP2 data set A.N.Buryk and V.V.Skalozub We used neural networks with 2 incoming neurons, 10 hidden neurons an 1 outgoing neurons.Training algorithm with back propagation of the error was used.After processing by the network we discard 20% of the uncertainty.To construct and train neural networks the MLPFit package was used.To process the data with obtained neural networks necessary programs were written.L3 183-189 GeVOPAL 130-207 GeVALEPH130-183 GeV DELPHI 189-207 GeV

  12. Z'-boson mass prediction based on neural networks analysis of LEP2 data A.N.Buryk and V.V.Skalozub Search for Z'-bosonusing neural networkswithin LEP2 data set A.N.Buryk and V.V.Skalozub 2σ CL

  13. Z'-boson mass prediction based on neural networks analysis of LEP2 data A.N.Buryk and V.V.Skalozub Search for Z'-bosonusing neural networkswithin LEP2 data set A.N.Buryk and V.V.Skalozub 95% CL area for v2 AFTER BEFORE

  14. Z'-boson mass prediction based on neural networks analysis of LEP2 data A.N.Buryk and V.V.Skalozub Search for Z'-bosonusing neural networkswithin LEP2 data set A.N.Buryk and V.V.Skalozub 95% CL area for a2 AFTER BEFORE

  15. Z'-boson mass prediction based on neural networks analysis of LEP2 data A.N.Buryk and V.V.Skalozub Neural networktwo-parameter fit One-parameter fit

  16. Z'-boson mass prediction based on neural networks analysis of LEP2 data A.N.Buryk and V.V.Skalozub Neural networktwo-parameter fit One-parameter fit

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