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Indirect detection of Kaluza-Klein dark matter from latticized universal dimensions
KTH, School of Engineering Sciences (SCI), Theoretical Physics.
KTH, School of Engineering Sciences (SCI), Theoretical Physics.ORCID iD: 0000-0002-3525-8349
2006 (English)In: Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, Vol. 2006, no 06, 014- p.Article in journal (Refereed) Published
Abstract [en]

We consider Kaluza-Klein dark matter from latticized universal dimensions. We investigate two different lattice models, where the models differ in the choice of boundary conditions. The models reproduce relevant features of the continuum model for Kaluza-Klein dark matter. For the model with simple boundary conditions, this is the case even for a model with only a few lattice sites. We study the effects of the latticization on the differential flux of positrons from annihilation of Kaluza-Klein dark matter in the galactic halo. We find that for different choices of the compactification radius, the differential positron flux rapidly converges to the continuum model results as a function of the number of lattice sites. In addition, we consider the prospects for upcoming space-based experiments such as PAMELA and AMS-02 to probe the latticization effect.

Place, publisher, year, edition, pages
IOP Publishing / SISSA , 2006. Vol. 2006, no 06, 014- p.
Keyword [en]
Dark matter; Extra dimensions
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:kth:diva-7439DOI: 10.1088/1475-7516/2006/06/014ISI: 000238978600014ScopusID: 2-s2.0-37649029696OAI: oai:DiVA.org:kth-7439DiVA: diva2:12466
Funder
Swedish Research Council, 621-2001-1611Swedish Research Council, 621-2002-3577
Note
QC 20100716Available from: 2011-06-21 Created: 2007-09-03 Last updated: 2011-06-21Bibliographically approved
In thesis
1. Aspects of Dimensional Deconstruction and Neutrino Physics
Open this publication in new window or tab >>Aspects of Dimensional Deconstruction and Neutrino Physics
2007 (English)Doctoral thesis, comprehensive summary (Other scientific)
Abstract [en]

The existence of at or curved extra spatial dimensions provides new insights into several of the problems which face the Standard Model of particle physics, including the gauge hierarchy problem, the smallness of neutrino masses, and the dark matter problem. However, higher-dimensional gauge theories are not renormalizable and can only be considered as low-energy effective theories, with limited applicability. Dimensional deconstruction provides a class of manifestly gauge invariant possible ultraviolet completions of higher-dimensional gauge theories, formulated within conventional quantum eld theory. In dimensional deconstruction, the fundamental theory is a four-dimensional quantum eld theory and extra spatial dimensions are generated dynamically at low energies. In this thesis, we study di erent applications of dimensional deconstruction in the contexts of neutrino masses, mixing and oscillations, Kaluza{Klein dark matter, and e ective eld theories for discretized higher-dimensional gravity.

A different possibility to understand the smallness of neutrino masses is provided by the see-saw mechanism. This is a genuinely four-dimensional mechanism, where the light neutrino masses are induced by the addition of heavy right-handed Majorana neutrinos or by other heavy degrees of freedom, such as scalar SU(2)L triplet elds. It has the attractive feature of simultaneously providing a mechanism for generating the observed baryon asymmetry of the Universe. We study in this context a specific left-right symmetric see-saw model.

Place, publisher, year, edition, pages
Stockholm: KTH, 2007. x, 104 p.
Series
Trita-FYS, ISSN 0280-316X ; 2007:48
Keyword
Dimensional deconstruction, higher-dimensional gauge theories, discretized gravity, neutrino mass, neutrino mixing, neutrino oscillations
National Category
Other Engineering and Technologies
Identifiers
urn:nbn:se:kth:diva-4480 (URN)978-91-7178-728-6 (ISBN)
Public defence
2007-09-19, Sal F3, KTH, Lindstedtsvägen 26, Stockholm, 10:00 (English)
Opponent
Supervisors
Note
QC 20100716Available from: 2007-09-03 Created: 2007-09-03 Last updated: 2010-07-16Bibliographically approved
2. Phenomenological studies of dimensional deconstruction
Open this publication in new window or tab >>Phenomenological studies of dimensional deconstruction
2005 (English)Licentiate thesis, comprehensive summary (Other scientific)
Abstract [en]

In this thesis, two applications of dimensional deconstruction are studied. The first application is a model for neutrino oscillations in the presence of a large decon- structed extra dimension. In the second application, Kaluza{Klein dark matter from a latticized universal extra dimension is studied. The goal of these projects have been twofold. First, to see whether it is possible to reproduce the relevant features of the higher-dimensional continuum theory, and second, to examine the effect of the latticization in experiments. In addition, an introduction to the the- ory of dimensional deconstruction as well as to the theory of continuous extra dimensions is given. Furthermore, the various higher-dimensional models, such as Arkani-Hamed{Dvali{Dimopolous (ADD) models and models with universal extra dimensions, that have been intensively studied in recent years, are discussed.

Place, publisher, year, edition, pages
Stockholm: KTH, 2005. vii, 58 p.
Series
Trita-FYS, ISSN 0280-316X ; 2005:69
Keyword
Dimensional deconstruction, higher-dimensional gauge theories, neu- trino mixing, neutrino oscillations, universal extra dimensions, ADD models, Ka- luza{Klein dark matter
National Category
Other Physics Topics
Identifiers
urn:nbn:se:kth:diva-567 (URN)91-7178-218-4 (ISBN)
Presentation
2005-12-09, 112:028, AlbaNova, hus 11, Roslagstullsbacken 11, Stockholm, 10:00
Opponent
Supervisors
Note
QC 20101202Available from: 2005-12-28 Created: 2005-12-28 Last updated: 2011-12-09Bibliographically approved

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Publisher's full textScopusJournal of Cosmology and Astroparticle Physicshttp://arxiv.org/abs/hep-ph/0510174/

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