Zobrazeno 1 - 10
of 8 105
pro vyhledávání: '"a. melikhov"'
Publikováno v:
World Literature Today, 2004 May 01. 78(2), 70-73.
Externí odkaz:
https://www.jstor.org/stable/40158418
The settling of highly elastic non-Brownian closed fibres (called loops) under gravity in a viscous fluid is investigated numerically. The loops are represented using a bead-spring model with harmonic bending potential and finitely extensible nonline
Externí odkaz:
http://arxiv.org/abs/2411.13563
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Publikováno v:
Phys. Rev. D110, 094048 (2024)
We calculate the form factors $F_{V}(q^2,q'^2)$ and $F_{TV}(q^2,q'^2)$ describing the $B_s\to \gamma^*$ transition induced by the vector and tensor weak currents in a broad range of values of $q^2$ and $q'^2$ far below the quark thresholds in both $q
Externí odkaz:
http://arxiv.org/abs/2407.13498
Autor:
Melikhov, Sergey A.
In 1974, D. Rolfsen asked: Is every knot in $S^3$ isotopic (=homotopic through embeddings) to a PL knot or, equivalently, to the unknot? In particular, is the Bing sling isotopic to a PL knot? We show that the Bing sling is not isotopic to any PL kno
Externí odkaz:
http://arxiv.org/abs/2406.09365
Autor:
Melikhov, Sergey A.
In 1974, D. Rolfsen asked: If two PL links in $S^3$ are isotopic (=homotopic through embeddings), then are they PL isotopic? We prove that they are PL isotopic to another pair of links which are indistinguishable from each other by finite type invari
Externí odkaz:
http://arxiv.org/abs/2406.09331
We present the first theoretical calculation of nonfactorizable charm-quark loop contributions to the $B_s\to \gamma l^+l^-$ amplitude. We calculate the relevant form factors, $H_{A,V}^{\rm NF}(k'^2,k^2)$, and provide convenient parametrizations of o
Externí odkaz:
http://arxiv.org/abs/2404.01222
Formal asymptotics are substantiated that describe typical dropping cusp singularity of quasiclassical approximations to solutions of two cases of the integrable nonlinear Schr\"odinger equation $-i\varepsilon\Psi'_{t}=\varepsilon^2\Psi''_{xx}\pm2|\P
Externí odkaz:
http://arxiv.org/abs/2311.09845
Autor:
Berezhnoy, Alexander, Melikhov, Dmitri
Publikováno v:
Europhysics Letters, 145, 14001 (2024)
Recently, Belle II reported the observation of the decay $B\to K M_X$, $M_X$ the missing mass, with the branching ratio much exceeding ${\cal B}(B\to K \nu\bar\nu)$ which is the only Standard Model (SM) process contributing to this reaction. If confi
Externí odkaz:
http://arxiv.org/abs/2309.17191
Publikováno v:
Phys. Rev. D 108, 094022 (2023)
We present a detailed theoretical study of nonfactorizable contributions of the charm-quark loop to the amplitude of the $B_s\to \gamma\,\gamma$ decay. This contribution involves the $B$-meson three-particle Bethe-Salpeter amplitude, $\langle 0|\bar
Externí odkaz:
http://arxiv.org/abs/2309.00358