Machine-enhanced CP-asymmetries in the Higgs sector

Akanksha Bhardwaj, Christoph Englert, Robert Hankache, Andrew D. Pilkington

Research output: Contribution to journalArticlepeer-review


Improving the sensitivity to CP-violation in the Higgs sector is one of the pillars of the precision Higgs programme at the Large Hadron Collider. We present a simple method that allows CP-sensitive observables to be directly constructed from the output of neural networks. We show that these observables have improved sensitivity to CP-violating effects in the production and decay of the Higgs boson, when compared to the use of traditional angular observables alone. The kinematic correlations identified by the neural networks can be used to design new analyses based on angular observables, with a similar improvement in sensitivity.

Original languageEnglish
Article number137246
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publication statusPublished - 10 Sep 2022


  • CP violation
  • Higgs physics
  • Phenomenology


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