Zobrazeno 1 - 10
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pro vyhledávání: '"Ivanov, Mikhail A."'
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
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
We present an effective field theory (EFT) approach to extract fundamental cosmological parameters from the Lyman-alpha forest flux fluctuations as an alternative to the standard simulation-based techniques. As a first application, we re-analyze the
Externí odkaz:
http://arxiv.org/abs/2405.13208
Autor:
Collaboration, Beyond-2pt, Krause, Elisabeth, Kobayashi, Yosuke, Salcedo, Andrés N., Ivanov, Mikhail M., Abel, Tom, Akitsu, Kazuyuki, Angulo, Raul E., Cabass, Giovanni, Contarini, Sofia, Cuesta-Lazaro, Carolina, Hahn, ChangHoon, Hamaus, Nico, Jeong, Donghui, Modi, Chirag, Nguyen, Nhat-Minh, Nishimichi, Takahiro, Paillas, Enrique, Ibañez, Marcos Pellejero, Philcox, Oliver H. E., Pisani, Alice, Schmidt, Fabian, Tanaka, Satoshi, Verza, Giovanni, Yuan, Sihan, Zennaro, Matteo
The last few years have seen the emergence of a wide array of novel techniques for analyzing high-precision data from upcoming galaxy surveys, which aim to extend the statistical analysis of galaxy clustering data beyond the linear regime and the can
Externí odkaz:
http://arxiv.org/abs/2405.02252
Publikováno v:
Phys. Rev. D 110, 096003 (2024)
We study the rare semileptonic decays of $B_c$ mesons within the effective field theoretical framework of covariant confined quark model. The transition form factors corresponding to $B_c^+ \to D^{(*)+}$ and $B_c^+ \to D_s^{(*)+}$ are computed in the
Externí odkaz:
http://arxiv.org/abs/2404.15085