BOUNDS ON DIRECT COUPLINGS OF SUPERHEAVY METASTABLE PARTICLES TO THE INFLATON FIELD FROM ULTRA HIGH ENERGY COSMIC RAY EVENTS-Reference-Cited by-同舟云学术

BOUNDS ON DIRECT COUPLINGS OF SUPERHEAVY METASTABLE PARTICLES TO THE INFLATON FIELD FROM ULTRA HIGH ENERGY COSMIC RAY EVENTS

Published:2002-10-30 Issue:33 Volume:17 Page:2179-2188
ISSN:0217-7323
Container-title:Modern Physics Letters A
language:en
Short-container-title:Mod. Phys. Lett. A

Author:

CAMPOS A. H.¹,LENGRUBER L. L.²,ROSENFELD R.²,REIS H. C.³,SATO R.³

Affiliation:

1. Instituto de Física, DFN – USP, Rua do Matão, Trav. R, 187, 05508-900 São Paulo, SP, Brazil

2. Instituto de Física Teórica – UNESP, Rua Pamplona, 145, 01405-900 São Paulo, SP, Brazil

3. Departamento de Raios Cósmicos e Cronologia, Universidade Estadual de Campinas – Unicamp, CP 6165, 13083-970, Campinas – SP, Brazil;

Abstract

Top-down models for the origin of ultra high energy cosmic rays (UHECR's) propose that these events are the decay products of relic superheavy metastable particles, usually called X particles. These particles can be produced in the reheating period following the inflationary epoch of the early Universe. We obtain constraints on some parameters such as the lifetime and direct couplings of the X-particle to the inflaton field from the requirement that they are responsible for the observed UHECR flux.

Publisher

World Scientific Pub Co Pte Lt

Subject

General Physics and Astronomy,Astronomy and Astrophysics,Nuclear and High Energy Physics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0217732302008915

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