On the effective operators for Dark Matter annihilations

We consider effective operators describing Dark Matter (DM) interactions with Standard Model fermions. In the non-relativistic limit of the DM field, the operators can be organized according to their mass dimension and their velocity behaviour, i.e. whether they describe s- or p-wave annihilations....

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Detalles Bibliográficos
Autores principales: De Simone, Andrea, Monin, Alexander, Thamm, Andrea, Urbano, Alfredo
Lenguaje:eng
Publicado: 2013
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1088/1475-7516/2013/02/039
http://cds.cern.ch/record/1504119
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author De Simone, Andrea
Monin, Alexander
Thamm, Andrea
Urbano, Alfredo
author_facet De Simone, Andrea
Monin, Alexander
Thamm, Andrea
Urbano, Alfredo
author_sort De Simone, Andrea
collection CERN
description We consider effective operators describing Dark Matter (DM) interactions with Standard Model fermions. In the non-relativistic limit of the DM field, the operators can be organized according to their mass dimension and their velocity behaviour, i.e. whether they describe s- or p-wave annihilations. The analysis is carried out for self-conjugate DM (real scalar or Majorana fermion). In this case, the helicity suppression at work in the annihilation into fermions is lifted by electroweak bremsstrahlung. We construct and study all dimension-8 operators encoding such an effect. These results are of interest in indirect DM searches.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2013
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spelling cern-15041192023-10-04T08:17:38Zdoi:10.1088/1475-7516/2013/02/039http://cds.cern.ch/record/1504119engDe Simone, AndreaMonin, AlexanderThamm, AndreaUrbano, AlfredoOn the effective operators for Dark Matter annihilationsParticle Physics - PhenomenologyWe consider effective operators describing Dark Matter (DM) interactions with Standard Model fermions. In the non-relativistic limit of the DM field, the operators can be organized according to their mass dimension and their velocity behaviour, i.e. whether they describe s- or p-wave annihilations. The analysis is carried out for self-conjugate DM (real scalar or Majorana fermion). In this case, the helicity suppression at work in the annihilation into fermions is lifted by electroweak bremsstrahlung. We construct and study all dimension-8 operators encoding such an effect. These results are of interest in indirect DM searches.We consider effective operators describing Dark Matter (DM) interactions with Standard Model fermions. In the non-relativistic limit of the DM field, the operators can be organized according to their mass dimension and their velocity behaviour, i.e. whether they describe s- or p-wave annihilations. The analysis is carried out for self-conjugate DM (real scalar or Majorana fermion). In this case, the helicity suppression at work in the annihilation into fermions is lifted by electroweak bremsstrahlung. We construct and study all dimension-8 operators encoding such an effect. These results are of interest in indirect DM searches.We consider effective operators describing Dark Matter (DM) interactions with Standard Model fermions. In the non-relativistic limit of the DM field, the operators can be organized according to their mass dimension and their velocity behaviour, i.e. whether they describe s- or p-wave annihilations. The analysis is carried out for self-conjugate DM (real scalar or Majorana fermion). In this case, the helicity suppression at work in the annihilation into fermions is lifted by electroweak bremsstrahlung. We construct and study all dimension-8 operators encoding such an effect. These results are of interest in indirect DM searches.arXiv:1301.1486CERN-PH-TH-2012-369SISSA-01-2013-FISICERN-PH-TH-2012-369SISSA 01-2013-FISIoai:cds.cern.ch:15041192013-01-09
spellingShingle Particle Physics - Phenomenology
De Simone, Andrea
Monin, Alexander
Thamm, Andrea
Urbano, Alfredo
On the effective operators for Dark Matter annihilations
title On the effective operators for Dark Matter annihilations
title_full On the effective operators for Dark Matter annihilations
title_fullStr On the effective operators for Dark Matter annihilations
title_full_unstemmed On the effective operators for Dark Matter annihilations
title_short On the effective operators for Dark Matter annihilations
title_sort on the effective operators for dark matter annihilations
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1088/1475-7516/2013/02/039
http://cds.cern.ch/record/1504119
work_keys_str_mv AT desimoneandrea ontheeffectiveoperatorsfordarkmatterannihilations
AT moninalexander ontheeffectiveoperatorsfordarkmatterannihilations
AT thammandrea ontheeffectiveoperatorsfordarkmatterannihilations
AT urbanoalfredo ontheeffectiveoperatorsfordarkmatterannihilations

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