Charmed penguin versus BAU

Abstract

Since the Standard Model most probably cannot explain the large value of CP asymmetries recently observed in D-meson decays we propose the fourth quark-lepton generation explanation of it. As a byproduct weakly mixed leptons of the fourth generation make it possible to save the baryon number of the Universe from erasure by sphalerons. An impact of the 4th generation on BBN is briefly discussed.

13 pages, 3 figures, version to be published in JETP Letters

References in corpus (5)

• Evidence for CP violation in time-integrated D0 -> h-h+ decay rates
• Size of direct CP violation in singly Cabibbo-suppressed D decays
• Implications of the LHCb Evidence for Charm CP Violation
• Joint analysis of Higgs decays and electroweak precision observables in the Standard Model with a sequential fourth generation
• Constraining the mixing matrix for Standard Model with four generations: time dependent and semi-leptonic CP asymmetries in $B_d^0$, $B_s$ and $D^0$

Cited by in corpus (3)

• On $SU(3{)}_F$ Breaking through Final State Interactions and CP Asymmetries in $D\to PP$ Decays
• CP violation in D meson decays: would it be a sign of new physics ?
• Brief Review of Charm Physics