學術資源整合系統-相關推薦
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| 作者 | Chilong Lin |
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| 出版日期 | 202305 |
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| 已接受 | 20230509 |
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| 接受證明 |  |
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| 著作名稱 | BAU Production in the SN-Breaking Standard Model
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| 刊名 | symmetry |
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| 卷 | 15 |
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| 期 | 5 |
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| 頁數 | 1051 |
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| 被收錄索引 | SCI |
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| 其他資訊 | Impact factor 2.94, citescore 4.3 |
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| 主題 | 物理 |
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| 關鍵字 | baryon asymmetry of the universe; charge-parity violation; SN symmetry |
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| 摘要 | The violation of charge-parity symmetry and the baryon asymmetry of the universe are
two of the most significant unresolved problems in physics. This article presents further research on
the CP violation problem in the Standard Model with 32 candidate sets of the 10 “natural” parameters
that exhibit the same Cabibbo–Kobayashi–Maskawa performance. These parameters are considered
“natural” because they consist solely of the Yukawa couplings and the vacuum expectation value
of the unique Higgs doublet in the Standard Model. Then, the problems of CP violation and the
baryon asymmetry of the universe are investigated by using the Jarlskog measure of CP violation,
DCP = J(m2t
−m2c
)(m2t
−m2
u)(m2c
−m2
u)(m2b
−m2s
)(m2b
−m2
d)(m2s
−m2
d)/T12, given that CP symmetry
is violated following the breakdown of SN symmetries. Subsequently, numerical tests are performed
in a simplified scenario where eight of the ten parameters are assumed to be fixed by two assumptions,
and the remaining two parameters are allowed to vary from the S2-symmetric point (x, y) = (−1, 1)
to their current values in all 32 parameter sets. To estimate the enhancement of CP violation in
such processes, a ratio RD ≡ DCP/D(0)
CP is proposed between the running DCP and its current value,
denoted by D(0)
CP, which is approximately 10−20. In all 32 cases, the three-dimensional plots of
RD exhibit many regions that stick out of the RD = 1010 plane, especially in regions very close
to (x, y) = (−1, 1). These results demonstrate that the SN-breaking Standard Model is already
sufficient to violate CP symmetry explicitly and generate a significant amount of baryon asymmetry
of the universe. Furthermore, it solves existing problems without creating new ones, at least in the
scenario presented in this article. |
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| 全文 | ;; |
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| 資料連結 | |
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| DOI | https:// doi.org/10.3390/sym15051051 |
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| 系統號 | NO000006719 |
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