English

Do the Small Numbers in the Quark Mixing arise from New Physics?

High Energy Physics - Phenomenology 2023-02-15 v2

Abstract

We put forward the conjecture that the small numbers in the VCKMV_\text{CKM} matrix, are generated by physics beyond the Standard Model. We identify as small numbers VubV_{ub} and the strength of CP violation, measured by ImQ|\text{Im}Q|, where QQ stands for a rephasing invariant quartet of VCKMV_\text{CKM}. We illustrate how the conjecture can be realised in the context of an extension of the Standard Model where an up-type vector-like quark is introduced leading to a realistic spectrum of quark masses and an effective VCKMV_\text{CKM} in agreement with experiment.

Keywords

Cite

@article{arxiv.2207.14235,
  title  = {Do the Small Numbers in the Quark Mixing arise from New Physics?},
  author = {G. C. Branco and José Filipe Bastos and J. I. Silva-Marcos},
  journal= {arXiv preprint arXiv:2207.14235},
  year   = {2023}
}

Comments

15 pages, 1 table