An EFT approach to baryon number violation: lower limits on the new physics scale and correlations between nucleon decay modes

Abstract

Baryon number is an accidental symmetry of the Standard Model at the Lagrangian level. Its violation is arguably one of the most compelling phenomena predicted by physics beyond the Standard Model. Furthermore, there is a large experimental effort to search for it including the Hyper-K, DUNE, JUNO, and THEIA experiments. Therefore, an agnostic, model-independent, analysis of baryon number violation using the power of Effective Field Theory is very timely. In particular, in this work we study the contribution of dimension six and seven effective operators to $|\Delta (B-L)|=0,2$ nucleon decays taking into account the effects of Renormalisation Group Evolution. We obtain lower limits on the energy scale of each operator and study the correlations between different decay modes. We find that for some operators the effect of running is very significant.

38 pages, 12 figures, 7 tables

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Cited by in corpus (10)

• Renormalization-group equations of the LEFT at two loops: dimension-six baryon-number-violating operators
• Leptogenesis, Dark Matter and Gravitational Waves from Discrete Symmetry Breaking
• Baryon number violation involving tau leptons
• Baryon Number Violation: From Nuclear Matrix Elements to BSM Physics
• Baryon number violating hydrogen decay
• New chiral structures for baryon number violating nucleon decays
• RG evolution and effect of intermediate new physics on $\Delta B=2$ six-quark operators
• Chiral perturbation theory for baryon-number-violating nucleon decay into a vector meson
• Invisible neutron decay and light BSM particles
• Renormalization-group-improved constraints on dimension-7 baryon-number-violating operators