Zobrazeno 1 - 10
of 420
pro vyhledávání: '"Grossman, Yuval"'
The Standard Model predicts a long-range force mediated by a pair of neutrinos, known as "the neutrino force." We derive an expression for this force that is valid for all $r$. For large $r$, it reduces to the known $G_F^2/r^5$ form, while for small
Externí odkaz:
http://arxiv.org/abs/2410.19059
Within the Standard Model, the branching fraction of the $B_s\to K^0\overline{K}{}^0$ decay is related to other decay rates and CP asymmetries through the approximate $SU(3)$ flavor symmetry of the strong interactions. Three such relations were shown
Externí odkaz:
http://arxiv.org/abs/2407.13506
The $\nu_M{\rm SM}$ is defined as the SM extended to include dimension-5 operators. In this model neutrino masses violate lepton number, and two parameters of the lepton mixing matrix, the Majorana phases, are yet to be constrained. One combination o
Externí odkaz:
http://arxiv.org/abs/2406.18647
The neutrino force results from the exchange of a pair of neutrinos. A neutrino background can significantly influence this force. In this work, we present a comprehensive calculation of the neutrino force in various neutrino backgrounds with spin de
Externí odkaz:
http://arxiv.org/abs/2405.16801
We study the penguin over tree ratio in $D\rightarrow \pi\pi$ decays. This ratio can serve as a probe for rescattering effects. Assuming the Standard Model and in the isospin limit, we derive expressions that relate both the magnitude and the phase o
Externí odkaz:
http://arxiv.org/abs/2312.10140
Autor:
Gavrilova, Margarita, Ghosh, Mitrajyoti, Grossman, Yuval, Tangarife, Walter, Tsai, Tien-Hsueh
Accelerating classical systems that couple to a fermion-antifermion pair at the microscopic level can radiate pairs of fermions and lose energy in the process. In this work, we derive the generalization of the Larmor formula for fermion pair radiatio
Externí odkaz:
http://arxiv.org/abs/2301.01303
The branching fraction of the $B_s\to K^0\bar K^0$ decay has been recently measured by the LHCb and Belle experiments. We study the consistency of the measured value with three relations to other decay rates and CP asymmetries which follow from the S
Externí odkaz:
http://arxiv.org/abs/2212.03874
Publikováno v:
Eur. Phys. J. C 83, 877 (2023)
$B^\pm \to DK^\pm$ transitions are known to provide theoretically clean information about the CKM angle $\gamma$, with the most precise available methods exploiting the cascade decay of the neutral $D$ into $CP$ self-conjugate states. Such analyses c
Externí odkaz:
http://arxiv.org/abs/2211.05133
We find that the phase appearing in the unitarity relation between $\mathcal{B}(K_L\rightarrow \mu^+\mu^-)$ and $\mathcal{B}(K_L\rightarrow \gamma\gamma)$ is equal to the phase shift in the interference term of the time-dependent $K\rightarrow \mu^+\
Externí odkaz:
http://arxiv.org/abs/2211.03804
Publikováno v:
JHEP 02 (2023) 092
The Standard Model predicts a long-range force, proportional to $G_F^2/r^5$, between fermions due to the exchange of a pair of neutrinos. This quantum force is feeble and has not been observed yet. In this paper, we compute this force in the presence
Externí odkaz:
http://arxiv.org/abs/2209.07082