Semi-leptonic three-body proton decay modes from light-cone sum rules

Journal of High Energy Physics

Ulrich Haisch¹  Amando Hala¹ 

[1] Max Planck Institute for Physics, Föhringer Ring 6, 80805, München, Germany;

关键词: Beyond Standard Model;    Perturbative QCD;   

DOI  :  10.1007/JHEP11(2021)144

来源: Springer

【 摘 要 】

Using light-cone sum rule techniques, we estimate the form factors which parametrise the hadronic matrix elements that are relevant for semi-leptonic three-body proton decays. The obtained form factors allow us to determine the differential rate for the decay of a proton (p) into a positron (e+), a neutral pion (π0) and a graviton (G), which is the leading proton decay channel in the effective theory of gravitons and Standard Model particles (GRSMEFT). The sensitivity of existing and next-generation neutrino experiments in detecting the p → e+π0G signature is studied and the phenomenological implications of our computations for constraints on the effective mass scale that suppresses the relevant baryon-number violating GRSMEFT operator are discussed.

【 授权许可】

CC BY