New Ideas in Baryogenesis: A Snowmass White Paper

Gilly Elor; Julia Harz; Seyda Ipek; Bibhushan Shakya; Nikita Blinov; Raymond T. Co; Yanou Cui; Arnab Dasgupta; Hooman Davoudiasl; Fatemeh Elahi; Kåre Fridell; Akshay Ghalsasi; Keisuke Harigaya; Chandan Hati; Peisi Huang; Azadeh Maleknejad; Robert McGehee; David E. Morrissey; Kai Schmitz; Michael Shamma; Brian Shuve; David Tucker-Smith; Jorinde van de Vis; Graham White

arXiv · 2203.05010

New Ideas in Baryogenesis: A Snowmass White Paper

View original source ↗Read source document ↗Export metadata ↓

Abstract

The Standard Model of Particle Physics cannot explain the observed baryon asymmetry of the Universe. This observation is a clear sign of new physics beyond the Standard Model. There have been many recent theoretical developments to address this question. Critically, many new physics models that generate the baryon asymmetry have a wide range of repercussions for many areas of theoretical and experimental particle physics. This white paper provides an overview of such recent theoretical developments with an emphasis on experimental testability.

Explore related subjects

hep-ph astro-ph.CO hep-ex

Keep this discovery

BibTeX RIS

Gilly Elor, Julia Harz, Seyda Ipek, Bibhushan Shakya, Nikita Blinov, Raymond T. Co, Yanou Cui, Arnab Dasgupta, Hooman Davoudiasl, Fatemeh Elahi, Kåre Fridell, Akshay Ghalsasi, Keisuke Harigaya, Chandan Hati, Peisi Huang, Azadeh Maleknejad, Robert McGehee, David E. Morrissey, Kai Schmitz, Michael Shamma, Brian Shuve, David Tucker-Smith, Jorinde van de Vis, Graham White. 2022-03-09. New Ideas in Baryogenesis: A Snowmass White Paper. https://arxiv.org/abs/2203.05010

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related papers

arXiv2026

Axionic Wormholes in Metric-Affine Gravity

The axion is a promising candidate for solving the strong CP problem. To solve this problem, the global U(1) symmetry must be preserved to a high degree of accuracy. However, it is well known that global symmetries are explicitly violated by quantum gravity effects, giving rise to what is referred to as the axion quality problem. In this paper, we investigate axionic wormholes as a source of explicit U(1) violation in Metric-Affine Gravity. This framework allows for spacetime torsion and non-metricity, which accommodate additional curvature-like and topological terms, such as the Holst and Nieh--Yan terms, that are absent from the metric and Palatini formalisms. We show that non-minimal couplings to these terms modify the wormhole dynamics and enhance the Euclidean wormhole action, thereby alleviating the axion quality problem. We also find that the viable parameter space is enlarged when two of these couplings are simultaneously present. We further identify representative parameter regions where the alleviation of the axion quality problem is compatible with inflationary constraints.

hep-ph↗

arXiv2026

Qubit-Qutrit Quantum Tomography of hadronic $\Lambda\phi$ and $\Lambda K^{\ast 0}$ systems

Quantum-information observables have emerged in recent years as new tools in nuclear and particle physics, from entanglement in top-quark pairs to spin correlations in $\Lambda\bar{\Lambda}$ production. Extending these studies to unequal-spin hadronic final states poses a fundamental challenge: the $6\times6$ density matrix of a qubit-qutrit system contains 35 independent spin parameters, but the decays of $\Lambda V$ pairs, with $V=\phi$ or $K^{*0}$, provide access to only 23 due to the hidden vector polarization from the strong decay. In this Letter, we formulate a qubit-qutrit quantum tomography (QQQT) technique for these spin-$\tfrac{1}{2}\otimes1$ systems and establish exact criteria for entanglement certification from the \textit{incomplete} density matrix. Compared with the $\Lambda\bar{\Lambda}$ system, QQQT of $\Lambda\phi$ and $\Lambda K^{*0}$ provides a new probe of nonperturbative QCD hadronization, enabling a direct comparison of the spin evolution of entangled quark pairs produced from the vacuum as they hadronize into a baryon or a vector meson.

hep-ph↗

arXiv2026

Twist decomposition of exclusive heavy meson production cross sections

We study the twist decomposition of the total cross sections for exclusive heavy vector meson electroproduction and photoproduction in the $\gamma^\ast p$ processes, within the leading logarithmic $1/x$ BFKL formalism. The Mellin transforms of the impact factors of the vector meson are calculated. We show that the higher twist contributions are strongly suppressed in the low-$x$ kinematical regime. Possible enhancement of the higher twists effects for nuclei targets is discussed.

hep-ph↗