Author:
Dubey S.,Browder T. E.,Kohani S.,Mandal R.,Sibidanov A.,Sinha R.,Vahsen S.E.
Abstract
We report the status of a neural network regression model trained to extract new physics (NP) parameters in Monte Carlo (MC) simulation data. We utilize a new EvtGen NP MC generator to generate B → K*0µ+µ− events according to the deviation of the Wilson Coefficient C9 from its SM value, δC9. We train a three-dimensional ResNet regression model, using images built from the angular observables and the invariant mass of the di-muon system, to extract values of δ
C9 directly from the MC data samples. This work is intended for future analyses at the Belle II experiment but may also find applicability at other experiments.
Reference13 articles.
1. Glashow S.L., Iliopoulos J., Maiani L., Phys. Rev. D 2 (1970)
2. Test of lepton universality with B
0 → K
*0
ℓ
+
ℓ
− decays
3. Test of Lepton-Flavor Universality in
B→K*ℓ+ℓ−
Decays at Belle
4. Sibidanov A. et al., Detecting lepton universality violation in angular distributions of B → K∗ℓ+ℓ− decays (2022), 2203.06827
5. He K., Zhang X., Ren S., Sun J., Deep residual learning for image recognition (2015), 1512.03385