Zobrazeno 1 - 10
of 66
pro vyhledávání: '"Marcin Badziak"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 9, Pp 1-52 (2024)
Abstract Hot axions are produced in the early Universe via their interactions with Standard Model particles, contributing to dark radiation commonly parameterized as ∆N eff. In standard QCD axion benchmark models, this contribution to ∆N eff is n
Externí odkaz:
https://doaj.org/article/44fc0010db0f4baa8acec6acf42b0a7f
Autor:
Marcin Badziak, Keisuke Harigaya
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 6, Pp 1-23 (2023)
Abstract We present a QCD axion model where the couplings of the axion to nucleons, electrons, and muons are naturally suppressed because of the appropriate choice of the Peccei-Quinn charges of the Standard Model fermions. We reexamine next-to-leadi
Externí odkaz:
https://doaj.org/article/90ee68cff0e6429d8b13459ffa5c9d95
Autor:
Marcin Badziak, Ignacy Nałęcz
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 2, Pp 1-36 (2023)
Abstract We revisit phase transitions in Twin Higgs (TH) models. We show that strong first-order phase transitions (FOPTs) can occur provided that appropriate source of ℤ2 symmetry breaking between the twin and Standard Model (SM) sectors is presen
Externí odkaz:
https://doaj.org/article/7ad56affceab4c53a5c4e9c6f9407bb6
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 10, Pp 1-25 (2022)
Abstract Supersymmetric Twin Higgs models ameliorate the fine-tuning of the electroweak scale originating from the heavy scalar top partners required by the non-discovery of them at the Large Hadron Collider. If the Lightest Supersymmetric Particle r
Externí odkaz:
https://doaj.org/article/3d9dcf3f982c4f52ae3482ec1226eea1
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 10, Pp 1-39 (2021)
Abstract We study a class of DFSZ-like models for the QCD axion that can address observed anomalies in stellar cooling. Stringent constraints from SN1987A and neutron stars are avoided by suppressed couplings to nucleons, while axion couplings to ele
Externí odkaz:
https://doaj.org/article/e4339bf65da54bbb81f22d37bfcfbde5
Publikováno v:
Symmetry, Vol 15, Iss 2, p 386 (2023)
We review the status of dark matter (DM) candidates in supersymmetric Twin Higgs models in light of the first results of the LUX-ZEPLIN (LZ) experiment. We found that, for twin bino-dominated DM, the new results strengthened the lower bound on the hi
Externí odkaz:
https://doaj.org/article/b41aaa64077b483c95bea180ac4fb302
Autor:
Marcin Badziak, Kazuki Sakurai
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 10, Pp 1-19 (2019)
Abstract The current experimental values of anomalous magnetic moments of muon and electron deviate from the Standard Model predictions by few standard deviations, which might be a hint of new physics. The sizes and signs of these deviations are diff
Externí odkaz:
https://doaj.org/article/845ee70cc8db45b7b437e217c9e1cbaa
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 1, Pp 1-12 (2019)
Abstract We analyze models of extended gauge Mediation in the context of the NMSSM, concentrating on supersymmetric spectra with light gluinos, low fine-tuning and decays of the lightest neutralino leading to displaced vertices. While the minimal sce
Externí odkaz:
https://doaj.org/article/9c055c7d40af4c36961437b62fd33bdb
Autor:
Marcin Badziak, Keisuke Harigaya
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 8, Pp 1-15 (2018)
Abstract It is pointed out that in supersymmetric models with a new gauge symmetry under which the Higgs is charged, the fine-tuning of the electroweak symmetry breaking is relaxed due to suppression of the top Yukawa coupling at higher scales by a n
Externí odkaz:
https://doaj.org/article/4650d3bd240f44f3980606b8a121eb64
Autor:
Marcin Badziak, Keisuke Harigaya
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 10, Pp 1-21 (2017)
Abstract We propose a minimal supersymmetric Twin Higgs model that can accommodate tuning of the electroweak scale for heavy stops better than 10% with high mediation scales of supersymmetry breaking. A crucial ingredient of this model is a new SU(2)
Externí odkaz:
https://doaj.org/article/0e72dff527eb4d8fafd4e6228a8ce937