2017/08/31 by Xucheng Gan, Andrew J. Long, Lian-Tao Wang
Computer Science · Mathematics · Physics and Astronomy · #Benford’s Law and Fraud Detection #Computational Physics and Python Applications #Dimension (graph theory) #Electroweak interaction #Mathematics #Particle physics #Physics #Pure mathematics #Quantum Mechanics and Applications #Sphaleron #astro-ph.CO #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevd.96.115018
published as Phys. Rev. D 96, 115018 (2017) · v2: 16 pages plus appendices, 2 figures, 2 tables; matches PRD version; v3: fixed label in Fig. 1
openalex created_date 2017/08/17 · openalex publication_date 2017/12/21 · arxiv created 2018/05/07 · arxiv updated 2018/05/08 · openalex updated_date 2026/08/05
New physics at the TeV scale can affect the dynamics of the electroweak phase transition in many ways. In this paper, we evaluate its impact on the rate of baryon-number violation via sphaleron transitions. We parametrize the effect of new physics with dimension-six operators, and we use the Newton-Kantorovich method to numerically solve the resulting equations of motion. Depending on the sign of the coefficient of the dimension-six operators, their presence can either increase or decrease the sphaleron energy at the level of a few percent, parametrically of order mW2/\mathrm\ensuremathΛ2 where \mathrm\ensuremathΛ is the scale suppressing the dimension-six operator. The baryon-number washout condition, typically written as vc/Tc>1, is directly proportional to the sphaleron energy, and we discuss how the presence of dimension-six operators can affect electroweak baryogenesis.