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Title: Baryogenesis via particle-antiparticle oscillations

Abstract

CP violation, which is crucial for producing the baryon asymmetry of the Universe, is enhanced in particle-antiparticle oscillations. We study particle-antiparticle oscillations [of a particle with mass O(100GeV)] with CP violation in the early Universe in the presence of interactions with O(ab-fb) cross sections. We show that if baryon-number-violating interactions exist, a baryon asymmetry can be produced via out-of-equilibrium decays of oscillating particles. As a concrete example we study a U(1)R-symmetric, R-parity-violating supersymmetry model with pseudo-Dirac gauginos, which undergo particle-antiparticle oscillations. Hence, taking bino to be the lightest U(1)R-symmetric particle, and assuming it decays via baryon-number-violating interactions, we show that bino-antibino oscillations can produce the baryon asymmetry of the Universe.

Authors:
 [1];  [2]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. Univ. of Oxford, Oxford (England)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1260387
Alternate Identifier(s):
OSTI ID: 1259906
Report Number(s):
FERMILAB-PUB-16-092-T; arXiv:1604.00009
Journal ID: ISSN 2470-0010; PRVDAQ; 1439777
Grant/Contract Number:  
AC02-07CH11359; SC0011637
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 93; Journal Issue: 12; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Ipek, Seyda, and March-Russell, John. Baryogenesis via particle-antiparticle oscillations. United States: N. p., 2016. Web. doi:10.1103/PhysRevD.93.123528.
Ipek, Seyda, & March-Russell, John. Baryogenesis via particle-antiparticle oscillations. United States. doi:10.1103/PhysRevD.93.123528.
Ipek, Seyda, and March-Russell, John. Wed . "Baryogenesis via particle-antiparticle oscillations". United States. doi:10.1103/PhysRevD.93.123528. https://www.osti.gov/servlets/purl/1260387.
@article{osti_1260387,
title = {Baryogenesis via particle-antiparticle oscillations},
author = {Ipek, Seyda and March-Russell, John},
abstractNote = {CP violation, which is crucial for producing the baryon asymmetry of the Universe, is enhanced in particle-antiparticle oscillations. We study particle-antiparticle oscillations [of a particle with mass O(100GeV)] with CP violation in the early Universe in the presence of interactions with O(ab-fb) cross sections. We show that if baryon-number-violating interactions exist, a baryon asymmetry can be produced via out-of-equilibrium decays of oscillating particles. As a concrete example we study a U(1)R-symmetric, R-parity-violating supersymmetry model with pseudo-Dirac gauginos, which undergo particle-antiparticle oscillations. Hence, taking bino to be the lightest U(1)R-symmetric particle, and assuming it decays via baryon-number-violating interactions, we show that bino-antibino oscillations can produce the baryon asymmetry of the Universe.},
doi = {10.1103/PhysRevD.93.123528},
journal = {Physical Review D},
number = 12,
volume = 93,
place = {United States},
year = {2016},
month = {6}
}

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