Zobrazeno 1 - 10
of 206
pro vyhledávání: '"Masjuan, Pere"'
Autor:
Cancio, Héctor, Masjuan, Pere
Through a holographic model of QCD, we present a phenomenological approach to study the running of the strong coupling constant $\alpha_s$ in both non-perturbative and perturbative regimes. The renormalization of the metric tensor, driven by the Ricc
Externí odkaz:
http://arxiv.org/abs/2408.00455
We review the tau data-driven computation of Euclidean windows for the hadronic vacuum polarization contribution to the muon anomalous magnetic moment (a_mu), which agree with the lattice results, making the difference of the $e^+e^-$ data-driven met
Externí odkaz:
http://arxiv.org/abs/2406.00902
The MUonE experiment is designed to extract the hadronic contribution to the electromagnetic coupling in the space-like region, $\Delta \alpha_{\rm had}(t)$, from elastic $e\mu$ scattering. The leading order hadronic vacuum polarization contribution
Externí odkaz:
http://arxiv.org/abs/2405.13638
Autor:
Masjuan, Pere, Roig, Pablo
We review recent progress on the numerical determination of the Hadronic Light-by-Light contribution to the anomalous magnetic moment of the muon. We advocate for a slight increase of the White Paper number for its Standard Model prediction, to $(102
Externí odkaz:
http://arxiv.org/abs/2401.05666
Publikováno v:
NPPP15510 2023
Windows in Euclidean time have become a standard tool for comparing lattice QCD and data-driven computations of the hadronic vacuum polarization (HVP) contribution to the muon $g-2$. Here we review our results, obtained using isospin-rotated $\tau^-\
Externí odkaz:
http://arxiv.org/abs/2310.14102
Publikováno v:
Physics Letters B Volume 850, March 2024, 138492
We compute for the first time the $\tau$ data-driven Euclidean windows for the hadronic vacuum polarization contribution to the muon $g-2$. We show that $\tau$-based results agree with the available lattice window evaluations and with the full result
Externí odkaz:
http://arxiv.org/abs/2305.20005
We determine the bottom quark mass $\hat{m}_b$ from QCD sum rules of moments of the vector current correlator calculated in perturbative QCD to ${\cal O} (\hat\alpha_s^3)$. Our approach is based on the mutual consistency across a set of moments where
Externí odkaz:
http://arxiv.org/abs/2203.02348
We use rational approximants to study missing higher orders in the massless scalar-current quark correlator. We predict the yet unknown six-loop coefficient of its imaginary part, related to $\Gamma(H\to b \bar b)$, to be $c_5=-6900\pm 1400$. With th
Externí odkaz:
http://arxiv.org/abs/2110.09909
In light of the first observation of the semileptonic decay $B^{0}_{s}\to K^{-}\mu^{+}\nu_{\mu}$ by the LHCb collaboration, we revisit the determination of the CKM parameter $|V_{ub}|$ from exclusive semileptonic $B$-meson decays. A controlled theore
Externí odkaz:
http://arxiv.org/abs/2110.06153
Autor:
Algueró, Marcel, Cartelle, Paula Alvarez, Marshall, Alexander Mclean, Masjuan, Pere, Matias, Joaquim, McCann, Michael Andrew, Patel, Mitesh, Petridis, Konstantinos A., Smith, Mark
Publikováno v:
JHEP 12 (2021) 085
In this paper we present a detailed study of the four-body decay $B^0\to K^{+}\pi^{-}\ell^{+}\ell^{-}$, where tensions with the Standard Model predictions have been observed. Our analysis of the decay with P- and S-wave contributions to the $K^{+}\pi
Externí odkaz:
http://arxiv.org/abs/2107.05301