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Title: Cosmology with a heavy Polonyi field

Abstract

We consider a cosmologically consistent scenario with a heavy Polonyi field. The Polonyi field with a mass of O(100) TeV decays before the Big-Bang Nucleosynthesis (BBN) and avoids the severe constraint from the BBN. However, the abundance of the Lightest Supersymmetric Particle (LSP) produced from the decay often exceeds the observed dark matter density. In our scenario, the dark matter density is obtained by the LSP abundance with an aid of entropy production, and baryon asymmetry is generated by the Affleck-Dine mechanism. We show that the observed baryon-to-dark matter ratio of O(0.1−1) is naturally explained in sequestering models with a QCD axion.

Authors:
 [1];  [2];  [3]; ;  [3];  [4]
  1. Department of Physics, University of California,Berkeley, California 94720 (United States)
  2. (United States)
  3. Institute for Cosmic Ray Research, The University of Tokyo,5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582 (Japan)
  4. (WPI), UTIAS, The University of Tokyo,5-1-5 Kashiwanoha, Kashiwa, 277-8583 (Japan)
Publication Date:
Sponsoring Org.:
SCOAP3, CERN, Geneva (Switzerland)
OSTI Identifier:
22572092
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2016; Journal Issue: 06; Other Information: PUBLISHER-ID: JCAP06(2016)015; OAI: oai:repo.scoap3.org:15916; cc-by Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AXIONS; BARYONS; COSMOLOGICAL MODELS; COSMOLOGY; ENTROPY; NONLUMINOUS MATTER; NUCLEOSYNTHESIS; QUANTUM CHROMODYNAMICS; SPARTICLES; TEV RANGE 10-100

Citation Formats

Harigaya, Keisuke, Theoretical Physics Group, Lawrence Berkeley National Laboratory,Berkeley, California 94720, Hayakawa, Taku, Kawasaki, Masahiro, Yamada, Masaki, and Kavli IPMU. Cosmology with a heavy Polonyi field. United States: N. p., 2016. Web. doi:10.1088/1475-7516/2016/06/015.
Harigaya, Keisuke, Theoretical Physics Group, Lawrence Berkeley National Laboratory,Berkeley, California 94720, Hayakawa, Taku, Kawasaki, Masahiro, Yamada, Masaki, & Kavli IPMU. Cosmology with a heavy Polonyi field. United States. doi:10.1088/1475-7516/2016/06/015.
Harigaya, Keisuke, Theoretical Physics Group, Lawrence Berkeley National Laboratory,Berkeley, California 94720, Hayakawa, Taku, Kawasaki, Masahiro, Yamada, Masaki, and Kavli IPMU. Wed . "Cosmology with a heavy Polonyi field". United States. doi:10.1088/1475-7516/2016/06/015.
@article{osti_22572092,
title = {Cosmology with a heavy Polonyi field},
author = {Harigaya, Keisuke and Theoretical Physics Group, Lawrence Berkeley National Laboratory,Berkeley, California 94720 and Hayakawa, Taku and Kawasaki, Masahiro and Yamada, Masaki and Kavli IPMU},
abstractNote = {We consider a cosmologically consistent scenario with a heavy Polonyi field. The Polonyi field with a mass of O(100) TeV decays before the Big-Bang Nucleosynthesis (BBN) and avoids the severe constraint from the BBN. However, the abundance of the Lightest Supersymmetric Particle (LSP) produced from the decay often exceeds the observed dark matter density. In our scenario, the dark matter density is obtained by the LSP abundance with an aid of entropy production, and baryon asymmetry is generated by the Affleck-Dine mechanism. We show that the observed baryon-to-dark matter ratio of O(0.1−1) is naturally explained in sequestering models with a QCD axion.},
doi = {10.1088/1475-7516/2016/06/015},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 06,
volume = 2016,
place = {United States},
year = {Wed Jun 08 00:00:00 EDT 2016},
month = {Wed Jun 08 00:00:00 EDT 2016}
}