Zobrazeno 1 - 10
of 134
pro vyhledávání: '"Thomas Schwetz"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 6, Pp 1-6 (2024)
Externí odkaz:
https://doaj.org/article/9ce94c249aac461bbc0ee91d7f0503be
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 9, Pp 1-13 (2023)
Abstract The rare decays $$B^+\rightarrow K^+ \mu \bar{\mu }$$ B + → K + μ μ ¯ and $$B^0\rightarrow K^{*0} \mu \bar{\mu }$$ B 0 → K ∗ 0 μ μ ¯ provide the strongest constraints on the mixing of a light scalar with the Higgs boson for GeV-s
Externí odkaz:
https://doaj.org/article/4e8258680c0746f7b5dc2553ad9209fe
Autor:
Raphael Krueger, Thomas Schwetz
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 7, Pp 1-19 (2023)
Abstract We adopt the quantum field theoretical method to calculate the amplitude and event rate for a neutrino oscillation experiment, considering neutrino production, propagation and detection as a single process. This method allows to take into ac
Externí odkaz:
https://doaj.org/article/cc21b64e53274667a3327b4a4f36696f
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 6, Pp 1-29 (2023)
Abstract Nuclear matrix elements (NME) are a crucial input for the interpretation of neutrinoless double beta decay data. We consider a representative set of recent NME calculations from different methods and investigate the impact on the present bou
Externí odkaz:
https://doaj.org/article/2ee7f60606bb44cea7689278674e0d0b
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 2, Pp 1-30 (2023)
Abstract Cosmological constraints on the sum of the neutrino masses can be relaxed if the number density of active neutrinos is reduced compared to the standard scenario, while at the same time keeping the effective number of neutrino species N eff
Externí odkaz:
https://doaj.org/article/b884f25f028c4aeeb31b8bb44b2f9b3b
Publikováno v:
Physics Letters B, Vol 841, Iss , Pp 137919- (2023)
We propose simple scenarios where lepton flavor-violating couplings generate the observed dark matter abundance through freeze-in of an axion-like particle with mass in the few keV range. Compared to flavor-diagonal freeze-in, this mechanism enhances
Externí odkaz:
https://doaj.org/article/c6fea84eaca7403db0f62a6500390cef
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 2, Pp 1-15 (2022)
Abstract We investigate the sensitivity of solar neutrino data to mixing of sterile neutrinos with masses $$\gtrsim $$ ≳ eV. For current data, we perform a Feldman–Cousins analysis to derive a robust limit on the sterile neutrino mixing. The sola
Externí odkaz:
https://doaj.org/article/8150e732623e4bfab6402771630d2dcd
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 2, Pp 1-39 (2022)
Abstract We evaluate the statistical significance of the 3+1 sterile-neutrino hypothesis using ν e and ν ¯ $$ \overline{\nu} $$ e disappearance data from reactor, solar and gallium radioactive source experiments. Concerning the latter, we investig
Externí odkaz:
https://doaj.org/article/4195964144bc4c79a98bdc31dfb2a76d
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 7, Pp 1-28 (2021)
Abstract We consider the sensitivity of the DUNE experiment to a heavy neutral lepton, HNL (also known as sterile neutrino) in the mass range from a few MeV to a few GeV, interacting with the Standard Model via a transition magnetic moment to the act
Externí odkaz:
https://doaj.org/article/9f3e57ae6fb64bc2ad615d27a69bf2f8
Autor:
Mariano Chaves, Thomas Schwetz
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 5, Pp 1-22 (2021)
Abstract In the presence of non-standard neutrino interactions (NSI), a degeneracy exists in neutrino oscillation data, which involves the flipping of the octant of the mixing angle θ 12 and the type of the neutrino mass ordering. In this article, w
Externí odkaz:
https://doaj.org/article/0324e3b8a5c343019cd0a7f83f9b8d05