Navigation auf zora.uzh.ch

Search ZORA

ZORA (Zurich Open Repository and Archive)

DDOS: due to massive botnet requests against our ‘Advanced Search’ we have restricted access to UZH (local and VPN). Thank you for your understanding.

Finite number density corrections to leptogenesis

Beneke, M; Garbrecht, B; Herranen, M; Schwaller, P (2010). Finite number density corrections to leptogenesis. Nuclear Physics. Section B, 838(1-2):1-27.

Abstract

We derive and solve kinetic equations for leptogenesis within the Closed Time Path (CTP) formalism. It is particularly emphasised how the procedure of real intermediate state subtraction familiar from the Boltzmann approach is realised within the CTP framework; and we show how in time-independent situations no lepton asymmetry emerges, in accordance with the CPT theorem. The CTP approach provides new quantum statistical corrections from evaluating the loop integrals. These lead to an enhancement of the asymmetry originating from the Bose statistics of the Higgs particles. To quantify this effect, we define and evaluate an effective CP-violating parameter. We also solve the kinetic equations and show explicitly that the new quantum statistical corrections can be neglected in the strong-washout regime, while, depending on initial conditions, they can be sizable for weak washout.

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Astrophysics
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Nuclear and High Energy Physics
Language:English
Date:2010
Deposited On:28 Feb 2011 16:25
Last Modified:05 Jun 2025 01:39
Publisher:Elsevier
ISSN:0550-3213
OA Status:Green
Publisher DOI:https://doi.org/10.1016/j.nuclphysb.2010.05.003
Related URLs:http://arxiv.org/abs/1002.1326
Download PDF  'Finite number density corrections to leptogenesis'.
Preview
  • Content: Accepted Version

Metadata Export

Statistics

Citations

Dimensions.ai Metrics
87 citations in Web of Science®
90 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

108 downloads since deposited on 28 Feb 2011
16 downloads since 12 months
Detailed statistics

Authors, Affiliations, Collaborations

Similar Publications