Abstract
Low-scale baryogenesis could be discovered at $B$-factories and the LHC. In the $B$-Mesogenesis paradigm [G. Elor, M. Escudero, and A. E. Nelson, PRD 99, 035031 (2019), arXiv:1810.00880], the CP violating oscillations and subsequent decays of $B$ mesons in the early Universe simultaneously explain the origin of the baryonic and the dark matter of the Universe. This mechanism for baryo- and dark matter genesis from $B$ mesons gives rise to distinctive signals at collider experiments, which we scrutinize in this paper. We study CP violating observables in the $B^0_q-\bar{B}_q^0$ system, discuss current and expected sensitivities for the exotic decays of $B$ mesons into a visible baryon and missing energy, and explore the implications of direct searches for a TeV-scale colored scalar at the LHC and in meson-mixing observables. Remarkably, we conclude that a combination of measurements at BaBar, Belle, Belle II, LHCb, ATLAS and CMS can fully test $B$-Mesogenesis.
Highlights
The Standard Model of particle physics (SM) is a highly successful framework describing the known particles and their interactions, and it has been tested to great precision at collider experiments
At LHCb with L 1⁄4 5 fb−1, NB ∼ Oð1012Þ have been produced [96], while at ATLAS and CMS with L 1⁄4 100 fb−1, the figure reaches NB ∼ Oð1014Þ [97,98]. This should be compared with the number of B mesons that were produced at BABAR or Belle (NB ∼ 3 × 109), or to those that are expected to be produced at Belle II with L 1⁄4 50 ab−1, which will be NB ∼ 1011
We conclude that a combination of measurements at BABAR, Belle, Belle II, LHCb, ATLAS, and CMS would be capable of testing the entire parameter space of B-Mesogenesis on a timescale of four to five years
Summary
The Standard Model of particle physics (SM) is a highly successful framework describing the known particles and their interactions, and it has been tested to great precision at collider experiments. Given the exciting possibility of generating baryogenesis and dark matter from B mesons and the potential for B-Mesogenesis to be tested at hadron colliders and B factories, in this work we set up an enterprise to shape the experimental signatures of the mechanism proposed in [39]. The conclusion of this paper is that B-Mesogenesis could be fully confirmed at current hadron colliders and B factories It is our intention for this work to provide a roadmap for experimental efforts directed at uncovering the mechanism responsible for baryogenesis and dark matter production. VII by summarizing our main results and outlining various avenues for future work
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