Sphalerogenesis

2025/05/15 by Masanori Tanaka, Tanaka, Masanori · 3 voices
Medicine · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #Neonatal Respiratory Health Research #hep-ex #hep-ph

paper · pdf · doi:10.48550/arxiv.2505.09984

openalex publication_date 2025/05/15 · arxiv published 2025/05/15 · openalex created_date 2025/10/15 · arxiv updated 2026/05/04 · openalex updated_date 2026/07/28

Abstract

We propose a mechanism called sphalerogenesis to explain the baryon asymmetry of the universe (BAU). The BAU is explained by a CP-violating decay of the electroweak sphaleron. We introduce a dimension-six operator constructed from weak gauge fields: Q_\widetildeW ∼ Λ^-2 ε_ijk \widetildeW_μνⁱ W^{j νρ} W_ρ^kμ. We find that the BAU can be explained if Λ≃ 38 \rm TeV. This scenario can be tested by electron electric dipole moment measurements in the near future.

Discussions

• #arXiv Sphalerogenesis https://arxiv.org/abs/2505.09984 “the baryon asymmetry of the universe (BAU) is explained by a CP-violating decay of the electroweak sphaleron if the cutoff scale satisfies 37.8 [bsky, 1 points, 0 comments]
• #arXiv Sphalerogenesis https://arxiv.org/abs/2505.09984 “the baryon asymmetry of the universe (BAU) is explained by a CP-violating decay of the electroweak sphaleron if the cutoff scale satisfies 37.8 [bsky, 0 points, 0 comments]
• # arXiv Sphalerogenesis https:// arxiv.org/abs/2505.09984 “the baryon asymmetry of the universe (BAU) is explained by a CP-violating decay of the electroweak sphaleron if the cutoff scale satisfies 37 [mastodon, 0 points, 0 comments]

Related

• Sphaleron portal baryogenesis
• Baryogenesis at the Electroweak Scale
• Sphaleron freeze-in baryogenesis with gravitational waves from the QCD transition
• Second leptogenesis: Unraveling the baryon-lepton asymmetry discrepancy
• Some Recent Developments in Sphalerons