Particle physics catalysis of thermal Big Bang Nucleosynthesis
| dc.creator | Pospelov, Maxim | |
| dc.date | 2006-05-19 | |
| dc.date | 2007-03-15 | |
| dc.date.accessioned | 2026-07-07T11:05:04Z | |
| dc.date.available | 2026-07-07T11:05:04Z | |
| dc.description | We point out that the existence of metastable, tau > 10^3 s, negatively charged electroweak-scale particles (X^-) alters the predictions for lithium and other primordial elemental abundances for A>4 via the formation of bound states with nuclei during BBN. In particular, we show that the bound states of X^- with helium, formed at temperatures of about T=10^8K, lead to the catalytic enhancement of Li6 production, which is eight orders of magnitude more efficient than the standard channel. In particle physics models where subsequent decay of X^- does not lead to large non-thermal BBN effects, this directly translates to the level of sensitivity to the number density of long-lived X^-, particles (τ>10^5 s) relative to entropy of n_{X^-}/s < 3\times 10^{-17}, which is one of the most stringent probes of electroweak scale remnants known to date. | |
| dc.description | Some typos corrected | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0605215 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0605215 | |
| dc.identifier | Phys.Rev.Lett.98:231301,2007 | |
| dc.identifier | doi:10.1103/PhysRevLett.98.231301 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/189101 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Astrophysics | |
| dc.subject | Nuclear Theory | |
| dc.title | Particle physics catalysis of thermal Big Bang Nucleosynthesis | |
| dc.type | text |