Zobrazeno 1 - 10
of 151
pro vyhledávání: '"Nishiwaki, Kenji"'
We discuss the future prospects of a minimally five-dimensional version of the well-motivated scenario for addressing the discrepancy in the muon anomalous magnetic moment, the $U(1)_{L_\mu - L_\tau}$ extension of the standard model (SM) gauge symmet
Externí odkaz:
http://arxiv.org/abs/2407.20615
Publikováno v:
The European Physical Journal C, 83, Article number: 978 (2023)
There is a long-standing anomaly in the ratio of the decay width for $\psi(3770)\to D^0\overline{D^0}$ to that for $\psi(3770)\to D^+D^-$ at the level of $9.5\,\sigma$. A similar anomaly exists for the ratio of $\phi(1020)\to K_\text{L}^0K_\text{S}^0
Externí odkaz:
http://arxiv.org/abs/2308.09933
Publikováno v:
The European Physical Journal C volume 83, Article number: 462 (2023)
The gauge-invariant two-point function of the Higgs field at the same spacetime point can make a natural gauge-invariant order parameter for spontaneous gauge symmetry breaking. However, this composite operator is ultraviolet divergent and is not wel
Externí odkaz:
http://arxiv.org/abs/2303.10841
Publikováno v:
Phys. Rev. D 108, 096013 (2023)
We report calculations of a wave-packet amplitude of the two-body scattering $\phi \phi \to \Phi \to \phi \phi$, which leads to the measured probability in realistic experiments. We elucidate the decay amplitude of $ \Phi \rightarrow \phi \phi$ from
Externí odkaz:
http://arxiv.org/abs/2102.12032
We compute an $s$-channel $2\to2$ scalar scattering $\phi\phi\to\Phi\to\phi\phi$ in the Gaussian wave-packet formalism at the tree-level. We find that wave-packet effects, including shifts of the pole and width of the propagator of $\Phi$, persist ev
Externí odkaz:
http://arxiv.org/abs/2006.14159
Autor:
Fujimoto, Yukihiro, Hasegawa, Kouhei, Nishiwaki, Kenji, Sakamoto, Makoto, Takenaga, Kazunori, Tanaka, Pedro Hugo, Ueba, Inori
Publikováno v:
Prog Theor Exp Phys (2019)
We show that the observed quark/lepton mass hierarchy can be realized dynamically on an interval extra dimension with point interactions. In our model, the positions of the point interactions play a crucial role to control the quark/lepton mass hiera
Externí odkaz:
http://arxiv.org/abs/1905.11597
We address the presently reported significant flavor anomalies in the $K$ and $B$ meson systems such as the CP violating Kaon decay ($\epsilon'/\epsilon$) and lepton-flavor universality violation in $B$ meson decays ($R_{K^{(*)}},$ and also commentin
Externí odkaz:
http://arxiv.org/abs/1903.10823
Autor:
Fujimoto, Yukihiro, Hasegawa, Kouhei, Nishiwaki, Kenji, Sakamoto, Makoto, Tatsumi, Kentaro, Ueba, Inori
Publikováno v:
Phys. Rev. D 99, 065002 (2019)
A new realization of extended quantum-mechanical supersymmetry (QM SUSY) with central extension is investigated. We first show that two different sets of $d+2$ ($d+1$) supercharges for $d=$ even (odd), each of which satisfies an $\mathcal{N}=d+2$ ($d
Externí odkaz:
http://arxiv.org/abs/1812.11282
Publikováno v:
JHEP1811(2018)164
We address the presently reported significant flavor anomalies in the Kaon and $B$ meson systems such as the CP violating Kaon decay ($\epsilon'/\epsilon$) and lepton-flavor universality violation in $B$ meson decays ($R_{K^{(*)}},{R_{D^{(*)}}}$), by
Externí odkaz:
http://arxiv.org/abs/1806.02312
Autor:
Fujimoto, Yukihiro, Hasegawa, Kouhei, Nishiwaki, Kenji, Sakamoto, Makoto, Tatsumi, Kentaro, Ueba, Inori
We investigate a new realization of extended quantum-mechanical supersymmetry. We first show that an $\mathcal{N}=2$ quantum-mechanical supersymmetry is hidden in the four-dimensional (4D) spectrum of the Kaluza-Klein decomposition for the higher dim
Externí odkaz:
http://arxiv.org/abs/1804.02626