Neutrino mass and mixing in the seesaw playground
Neutrino mass and mixing in the seesaw playground
We discuss neutrino mass and mixing in the framework of the classic seesaw mechanism, involving right-handed neutrinos with large Majorana masses, which provides an appealing way to understand the smallness of neutrino masses. However, with many input parameters, the seesaw mechanism is in general not predictive. We focus on natural implementations of the seesaw mechanism, in which large cancellations do not occur, where one of the right handed neutrinos is dominantly responsible for the atmospheric neutrino mass, while a second right-handed neutrino accounts for the solar neutrino mass, leading to an effective two right-handed neutrino model. We discuss recent attempts to predict lepton mixing and CP violation within such natural frameworks, focussing on the Littlest Seesaw and its distinctive predictions.
hep-ph
456-466
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
July 2016
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
Abstract
We discuss neutrino mass and mixing in the framework of the classic seesaw mechanism, involving right-handed neutrinos with large Majorana masses, which provides an appealing way to understand the smallness of neutrino masses. However, with many input parameters, the seesaw mechanism is in general not predictive. We focus on natural implementations of the seesaw mechanism, in which large cancellations do not occur, where one of the right handed neutrinos is dominantly responsible for the atmospheric neutrino mass, while a second right-handed neutrino accounts for the solar neutrino mass, leading to an effective two right-handed neutrino model. We discuss recent attempts to predict lepton mixing and CP violation within such natural frameworks, focussing on the Littlest Seesaw and its distinctive predictions.
Other
pdf
- Accepted Manuscript
More information
Accepted/In Press date: 23 December 2015
e-pub ahead of print date: 29 December 2015
Published date: July 2016
Additional Information:
12 pages, 5 figures, Invited contribution to the Special Issue on Neutrino Oscillation in order to celebrate the Nobel Prize in Physics 2015 - for publication in Nuclear Physics B
Keywords:
hep-ph
Organisations:
Theory Group
Identifiers
Local EPrints ID: 410379
URI: http://eprints.soton.ac.uk/id/eprint/410379
ISSN: 0550-3213
PURE UUID: 20a2a8da-6887-4916-8e32-824b74f0419d
Catalogue record
Date deposited: 07 Jun 2017 16:31
Last modified: 15 Mar 2024 14:00
Export record
Altmetrics
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics