The CKM unitarity problem: a trace of new physics at the TeV scale?
Abstract After the recent high precision determinations of $$V_{us}$$ Vus and $$V_{ud}$$ Vud , the first row of the CKM matrix shows more than $$4\sigma $$ 4σ deviation from unitarity. Two possible scenarios beyond the Standard Model can be investigated in order to fill the gap. If a 4th non-sequent...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2020-02-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-020-7691-6 |