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High Energy Physics - Phenomenology

arXiv:1604.00009 (hep-ph)
[Submitted on 31 Mar 2016 (v1), last revised 30 Jun 2016 (this version, v2)]

Title:Baryogenesis via Particle-Antiparticle Oscillations

Authors:Seyda Ipek, John March-Russell
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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(100 GeV)) 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 SUSY model with pseudo-Dirac gauginos, which undergo particle-antiparticle oscillations. 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.
Comments: 17 pages, 11 figures, refs added, typos fixed
Subjects: High Energy Physics - Phenomenology (hep-ph)
Report number: FERMILAB-PUB-16-092-T
Cite as: arXiv:1604.00009 [hep-ph]
  (or arXiv:1604.00009v2 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1604.00009
Journal reference: Phys. Rev. D 93, 123528 2016
Related DOI: https://doi.org/10.1103/PhysRevD.93.123528

Submission history

From: Seyda Ipek [view email]
[v1] Thu, 31 Mar 2016 20:00:01 UTC (1,610 KB)
[v2] Thu, 30 Jun 2016 00:09:55 UTC (1,632 KB)
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