Case for decaying spin- 3/2 dark matter

Marcos A.G. Garcia, Yann Mambrini, Keith A. Olive, Sarunas Verner

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We consider a spin-3/2 particle and show that with a Planck reduced coupling, we can obtain a sufficiently long lifetime making the spin-3/2 particle a good dark matter candidate. We show that this dark matter candidate can be produced during inflationary reheating through the scattering of Standard Model particles. The relic abundance as determined by Planck and other experimental measurements is attained for reasonable values of the reheating temperature TRH108 GeV. We consider two possible gauge invariant couplings to the extended Standard Model. We find a large range of masses are possible which respect the experimental limits on its decay rate. We expect smoking-gun signals in the form of a monochromatic photon with a possible monochromatic neutrino, which can be probed in the near future in IceCube and other indirect detection experiments.

Original languageEnglish (US)
Article number083533
JournalPhysical Review D
Volume102
Issue number8
DOIs
StatePublished - Oct 23 2020

Bibliographical note

Funding Information:
The authors want to thank especially Kunio Kaneta and Emilian Dudas for the very insightful discussions. This work was supported in part by the France-U.S. PICS MicroDark. The work of M. A. G. G. was supported by the Spanish Agencia Estatal de Investigación through the Grants No. FPA2015-65929-P (MINECO/FEDER, UE) and No. PGC2018095161-B-I00, IFT Centro de Excelencia Severo Ochoa Grant No. SEV-2016-0597, and Red Consolider MultiDark Grant No. FPA2017-90566-REDC. This project has received funding/support from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie Grant Agreements Elusives ITN No. 674896 and InvisiblesPlus RISE No. 690575. The work of K. A. O. was supported in part by U.S. DOE Grant No. DE-SC0011842 at the University of Minnesota.

Funding Information:
The authors want to thank especially Kunio Kaneta and Emilian Dudas for the very insightful discussions. This work was supported in part by the France-U.S. PICS MicroDark. The work of M.A.G.G. was supported by the Spanish Agencia Estatal de Investigaci?n through the Grants No. FPA2015-65929-P (MINECO/FEDER, UE) and No. PGC2018095161-B-I00, IFT Centro de Excelencia Severo Ochoa Grant No. SEV-2016-0597, and Red Consolider MultiDark Grant No. FPA2017-90566-REDC. This project has received funding/support from the European Union-s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie Grant Agreements Elusives ITN No. 674896 and InvisiblesPlus RISE No. 690575. The work of K.A.O. was supported in part by U.S. DOE Grant No. DE-SC0011842 at the University of Minnesota.

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