Dynamical matter-parity breaking and gravitino dark matter

Journal Article · Mon Nov 15 04:00:00 EST 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.103517· OSTI ID:21503605

Schmidt, Jonas; Weniger, Christoph ^[1]; Yanagida, Tsutomu T ^[2]

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1. Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85, 22603 Hamburg (Germany)
2. Institute for the Physics and Mathematics of the Universe (IPMU), University of Tokyo, Chiba 277-8568 (Japan)

Scenarios where gravitinos with GeV masses makeup dark matter are known to be in tension with high reheating temperatures, as required by e.g. thermal leptogenesis. This tension comes from the longevity of the NLSPs (next-to-lightest supersymmetric particle), which can destroy the successful predictions of the standard primordial nucleosynthesis. However, a small violation of matter parity can open new decay channels for the NLSP, avoiding the BBN (standard primordial nucleosynthesis) problems, while being compatible with experimental cosmic-ray constraints. In this paper, we propose a model where matter parity, which we assume to be embedded in the U(1){sub B-L} gauge symmetry, is broken dynamically in a hidden sector at low-scales. This can naturally explain the smallness of the matter parity breaking in the visible sector. We discuss the dynamics of the corresponding pseudo Nambu-Goldstone modes of B-L breaking in the hidden sector, and we comment on typical cosmic-ray and collider signatures in our model.

• OSTI ID: 21503605
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 10 Vol. 82; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FORECASTING
GAUGE INVARIANCE
GEV RANGE
GRAVITATION
GRAVITATIONAL RADIATION
GRAVITONS
INVARIANCE PRINCIPLES
IONIZING RADIATIONS
LEPTONS
MASS
MASSLESS PARTICLES
MATTER
NONLUMINOUS MATTER
NUCLEOSYNTHESIS
PARITY
PARTICLE PRODUCTION
PARTICLE PROPERTIES
POSTULATED PARTICLES
RADIATIONS
SPARTICLES
SYNTHESIS