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pro vyhledávání: '"IVANOV, Mikhail A."'
Autor:
de Belsunce, Roger, Chen, Shi-Fan, Ivanov, Mikhail M., Ravoux, Corentin, Chabanier, Solene, Sexton, Jean, Lukic, Zarija
We present precision measurements of the bias parameters of the one-loop power spectrum model of the Lyman-alpha (Lya) forest, derived within the effective field theory of large-scale structure (EFT). We fit our model to the three-dimensional flux po
Externí odkaz:
http://arxiv.org/abs/2412.06892
Autor:
Ivanov, Mikhail M., Cuesta-Lazaro, Carolina, Obuljen, Andrej, Toomey, Michael W., Ni, Yueying, Bose, Sownak, Hadzhiyska, Boryana, Hernández-Aguayo, César, Hernquist, Lars, Kannan, Rahul, Springel, Volker
Cosmological analyses of redshift space clustering data are primarily based on using luminous ``red'' galaxies (LRGs) and ``blue'' emission line galaxies (ELGs) to trace underlying dark matter. Using the large high-fidelity high-resolution Millennium
Externí odkaz:
http://arxiv.org/abs/2412.01888
Parameter estimation from galaxy survey data from the full-shape method depends on scale cuts and priors on EFT parameters. The effects of priors, including the so-called "prior volume" phenomenon have been originally studied in Ivanov et al. (2019)
Externí odkaz:
http://arxiv.org/abs/2410.16358
We explore full-shape analysis with simulation-based priors, which is the simplest approach to galaxy clustering data analysis that combines effective field theory (EFT) on large scales and numerical simulations on small scales. The core ingredient o
Externí odkaz:
http://arxiv.org/abs/2409.10609
Cosmological models are often motivated and formulated in the language of particle physics, using quantities such as the axion decay constant, but tested against data using ostensibly physical quantities, such as energy density ratios, assuming unifo
Externí odkaz:
http://arxiv.org/abs/2409.09029
We study the exclusive semileptonic decays $\Upsilon(1S)\to B_{(c)}\ell\bar{\nu}_\ell$, where $\ell = e,\mu,\tau$. The relevant hadronic form factors are calculated using the Covariant Confined Quark Model developed previously by our group. We predic
Externí odkaz:
http://arxiv.org/abs/2408.13776
Akademický článek
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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
Suppression without Thawing: Constraining Structure Formation and Dark Energy with Galaxy Clustering
We present a new perturbative full-shape analysis of BOSS galaxy clustering data, including the full combination of the galaxy power spectrum and bispectrum multipoles, baryon acoustic oscillations, and cross-correlations with the gravitational lensi
Externí odkaz:
http://arxiv.org/abs/2406.13388
Autor:
Dubnička, Stanislav, Dubničková, Anna Zuzana, Ivanov, Mikhail A., Liptaj, Andrej, Tyulemissova, Akmaral, Tyulemissov, Zhomart
The leptonic decay widths of heavy quarkonia are complementary observables to the semileptonic decays of heavy mesons and provide additional insight into the possible lepton flavor universality breaking. We analyze the former in the framework of the
Externí odkaz:
http://arxiv.org/abs/2406.09763