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On the origin of matter in the Universe

On the origin of matter in the Universe
On the origin of matter in the Universe

The understanding of the physical processes that lead to the origin of matter in the early Universe, creating both an excess of matter over anti-matter and a dark matter abundance that survived until the present, is one of the most fascinating challenges in modern science. The problem cannot be addressed within our current description of fundamental physics and, therefore, it currently provides a very strong evidence of new physics. Solutions can either reside in a modification of the standard model of elementary particle physics or in a modification of the way we describe gravity, based on general relativity, or at the interface of both. We will mainly discuss the first class of solutions. Traditionally, models that separately explain either the matter–antimatter asymmetry of the Universe or dark matter have been proposed. However, in the last years there has also been an accreted interest and intense activity on scenarios able to provide a unified picture of the origin of matter in the early universe. In this review we discuss some of the main ideas emphasising primarily those models that have more chances to be experimentally tested during next years. Moreover, after a general discussion, we will focus on extensions of the standard model that can also address neutrino masses and mixing. Since this is currently the only evidence of physics beyond the standard model coming directly from particle physics experiments, it is then reasonable that such extensions might also provide a solution to the problem of the origin of matter in the universe.

Baryogenesis, Dark matter, Leptogenesis, Neutrino masses and mixing, Physics beyond the standard model, Physics of the early universe
0146-6410
Di Bari, Pasquale
3fe21e59-0eff-41bc-8faa-fdd817146418
Di Bari, Pasquale
3fe21e59-0eff-41bc-8faa-fdd817146418

Di Bari, Pasquale (2021) On the origin of matter in the Universe. Progress in Particle and Nuclear Physics, 122, [103913]. (doi:10.1016/j.ppnp.2021.103913).

Record type: Review

Abstract

The understanding of the physical processes that lead to the origin of matter in the early Universe, creating both an excess of matter over anti-matter and a dark matter abundance that survived until the present, is one of the most fascinating challenges in modern science. The problem cannot be addressed within our current description of fundamental physics and, therefore, it currently provides a very strong evidence of new physics. Solutions can either reside in a modification of the standard model of elementary particle physics or in a modification of the way we describe gravity, based on general relativity, or at the interface of both. We will mainly discuss the first class of solutions. Traditionally, models that separately explain either the matter–antimatter asymmetry of the Universe or dark matter have been proposed. However, in the last years there has also been an accreted interest and intense activity on scenarios able to provide a unified picture of the origin of matter in the early universe. In this review we discuss some of the main ideas emphasising primarily those models that have more chances to be experimentally tested during next years. Moreover, after a general discussion, we will focus on extensions of the standard model that can also address neutrino masses and mixing. Since this is currently the only evidence of physics beyond the standard model coming directly from particle physics experiments, it is then reasonable that such extensions might also provide a solution to the problem of the origin of matter in the universe.

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v2OMU - Accepted Manuscript
Restricted to Repository staff only until 11 March 2023.
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e-pub ahead of print date: 11 March 2021
Published date: 15 March 2021
Additional Information: Funding Information: I wish to thank Wilfried Buchmüller, Marco Drewes, Jacopo Ghiglieri and Graham White for useful comments and suggestions. I also wish to thank Steve Blanchet, Wilfried Buchmüller, Marco Chianese, Ferruccio Feruglio, David Jones, Sophie King, Steve King, Danny Marfatia, Luca Marzola, Enrico Nardi, Michael Plümacher, Michele Re Fiorentin, Tony Riotto, Sergio Palomares-Ruiz, Rome Samanta, Ye-Ling Zhou for fruitful collaborations on topics discussed in this review. We are all indebted to Steven Weinberg for his scientific breakthroughs. Personally, I was greatly inspired, as a teenager, by the reading of the The first three minutes [229] , the unsurpassed popular science book masterpiece. I acknowledge financial support from the STFC, UK Consolidated Grant ST/T000775/1 . Publisher Copyright: © 2021 Elsevier B.V. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
Keywords: Baryogenesis, Dark matter, Leptogenesis, Neutrino masses and mixing, Physics beyond the standard model, Physics of the early universe

Identifiers

Local EPrints ID: 453805
URI: http://eprints.soton.ac.uk/id/eprint/453805
ISSN: 0146-6410
PURE UUID: ac6d0ed2-b0d0-4283-aea5-e0b9ea98a599

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Date deposited: 24 Jan 2022 17:53
Last modified: 24 Jan 2022 17:53

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