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Flavor effects in leptogenesis

Flavor effects in leptogenesis
Flavor effects in leptogenesis
Flavor effects can have a significant impact on the final estimate of the lepton (and therefore baryon) asymmetry in scenarios of leptogenesis. It is therefore necessary to account fully for this flavor dynamics in the relevant transport equations that describe the production (and washout) of the asymmetry. Doing so can both open up and restrict viable regions of parameter space relative to the predictions of more approximate calculations. In this paper, we identify the regimes in which flavor effects can be relevant and illustrate their impact in a number of phenomenological models. These include type I and type II seesaw embeddings, and low-scale resonant scenarios. In addition, we provide an overview of the semi-classical and field-theoretic methods that have been developed to capture flavor effects in a consistent way.

Read More: https://www.worldscientific.com/doi/abs/10.1142/S0217751X18420010
0217-751X
Dev, P.S. Bhupal
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Di Bari, Pasquale
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Garbrecht, Bjorn
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Lavignac, Stephane
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Millington, J. Peter
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Teresi, Daniele
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Dev, P.S. Bhupal
c48d060a-ccb4-4df3-aaae-2fc2571d1cab
Di Bari, Pasquale
3fe21e59-0eff-41bc-8faa-fdd817146418
Garbrecht, Bjorn
2c9a640b-d412-49e2-9d59-ac3e1a73fca6
Lavignac, Stephane
b4310bec-d125-4af2-8a87-195dabd1c1d3
Millington, J. Peter
1a48571f-08f8-4ab3-b623-64bd8ef3720f
Teresi, Daniele
26d9fe8c-ef83-41e2-8c90-5010ab548ce0

Dev, P.S. Bhupal, Di Bari, Pasquale, Garbrecht, Bjorn, Lavignac, Stephane, Millington, J. Peter and Teresi, Daniele (2018) Flavor effects in leptogenesis. International Journal of Modern Physics A, 33 (05n06). (doi:10.1142/S0217751X18420010).

Record type: Article

Abstract

Flavor effects can have a significant impact on the final estimate of the lepton (and therefore baryon) asymmetry in scenarios of leptogenesis. It is therefore necessary to account fully for this flavor dynamics in the relevant transport equations that describe the production (and washout) of the asymmetry. Doing so can both open up and restrict viable regions of parameter space relative to the predictions of more approximate calculations. In this paper, we identify the regimes in which flavor effects can be relevant and illustrate their impact in a number of phenomenological models. These include type I and type II seesaw embeddings, and low-scale resonant scenarios. In addition, we provide an overview of the semi-classical and field-theoretic methods that have been developed to capture flavor effects in a consistent way.

Read More: https://www.worldscientific.com/doi/abs/10.1142/S0217751X18420010

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1711.02861 - Accepted Manuscript
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More information

Submitted date: 2017
Accepted/In Press date: 8 November 2017
e-pub ahead of print date: 28 February 2018

Identifiers

Local EPrints ID: 417896
URI: http://eprints.soton.ac.uk/id/eprint/417896
ISSN: 0217-751X
PURE UUID: 933bda20-0ec6-4b8f-bc51-596eb6c7e91e

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Date deposited: 16 Feb 2018 17:30
Last modified: 25 Nov 2021 19:13

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Contributors

Author: P.S. Bhupal Dev
Author: Bjorn Garbrecht
Author: Stephane Lavignac
Author: J. Peter Millington
Author: Daniele Teresi

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