Zobrazeno 1 - 10
of 138
pro vyhledávání: '"Gérardin Antoine"'
Hadronic contributions dominate the uncertainty of the Standard Model prediction for the anomalous magnetic moment of the muon. In this work, we present results on the hadronic light-by-light contribution obtained from the evaluation of the hadronic
Externí odkaz:
http://arxiv.org/abs/2410.17092
Autor:
Verplanke, Willem E. A., Fodor, Zoltan, Gerardin, Antoine, Guenther, Jana N., Lellouch, Laurent, Szabo, Kalman K., Toth, Balint C., Varnhorst, Lukas
We present a lattice calculation of the $\eta$ and $\eta^{\prime}$ meson masses at the physical point and in the continuum limit, based on $N_f = 2+1+1$ flavors of rooted staggered quarks. Our analysis includes gauge ensembles at the physical pion an
Externí odkaz:
http://arxiv.org/abs/2409.18846
Autor:
Conigli, Alessandro, Frison, Julien, Fritzsch, Patrick, Gérardin, Antoine, Heitger, Jochen, Herdoiza, Gregorio, Kuberski, Simon, Pena, Carlos, Simma, Hubert, Sommer, Rainer
In a somewhat forgotten paper [1] it was shown how to perform interpolations between relativistic and static computations in order to obtain results for heavy-light observables for masses from, say, $m_{\rm charm}$ to $m_{\rm bottom}$. All quantities
Externí odkaz:
http://arxiv.org/abs/2312.09811
Autor:
Conigli, Alessandro, Frison, Julien, Fritzsch, Patrick, Gérardin, Antoine, Heitger, Jochen, Herdoiza, Gregorio, Kuberski, Simon, Pena, Carlos, Simma, Hubert, Sommer, Rainer
We present preliminary results for B-physics from a combination of non-perturbative results in the static limit with relativistic computations satisfying $am_{\mathrm{heavy}}\ll 1$. Relativistic measurements are carried out at the physical b-quark ma
Externí odkaz:
http://arxiv.org/abs/2312.10017
Hadronic contributions dominate the uncertainty of the standard model prediction for the anomalous magnetic moment of the muon. In this work, we describe an ongoing lattice calculation of the hadronic light-by-light contribution, performed with stagg
Externí odkaz:
http://arxiv.org/abs/2311.10628
In this report we present the status of the Mainz group's lattice QCD calculation of the pion transition form factor, which describes the interaction of an on-shell pion with two off-shell photons. This form factor is the main ingredient in the calcu
Externí odkaz:
http://arxiv.org/abs/2311.07330
Autor:
Wittig Hartmut, Gérardin Antoine, Cè Marco, von Hippel Georg, Hörz Ben, Meyer Harvey B., Miura Kohtaroh, Mohler Daniel, Ottnad Konstantin, Risch Andreas, San José Teseo, Wilhelm Jonas
Publikováno v:
EPJ Web of Conferences, Vol 234, p 01016 (2020)
The persistent discrepancy of about 3.5 standard deviations between the experimental measurement and the Standard Model prediction for the muon anomalous magnetic moment, aµ, is one of the most promising hints for the possible existence of new physi
Externí odkaz:
https://doaj.org/article/913085a19d0f49a19428421bf7ed6552
Autor:
Davier, Michel, Fodor, Zoltan, Gerardin, Antoine, Lellouch, Laurent, Malaescu, Bogdan, Stokes, Finn M., Szabo, Kalman K., Toth, Balint C., Varnhorst, Lukas, Zhang, Zhiqing
The precision with which hadronic vacuum polarization (HVP) is obtained determines how accurately important observables, such as the muon anomalous magnetic moment, a_\mu, or the low-energy running of the electromagnetic coupling, \alpha, are predict
Externí odkaz:
http://arxiv.org/abs/2308.04221
Autor:
Gérardin, Antoine, Verplanke, Willem E. A., Wang, Gen, Fodor, Zoltan, Guenther, Jana N., Lellouch, Laurent, Szabo, Kalman K., Varnhorst, Lukas
In this paper we present a first ab-initio calculation of the $\pi^0$, $\eta$ and $\eta^{\prime}$ transition form factors performed with physical light-quark masses. We provide a complete parametrization of the form factors that includes both single
Externí odkaz:
http://arxiv.org/abs/2305.04570
Autor:
José, Teseo San, Wittig, Hartmut, Cè, Marco, Gérardin, Antoine, von Hippel, Georg, Meyer, Harvey B., Miura, Kohtaroh, Ottnad, Konstantin, Risch, Andreas, Wilhelm, Jonas
Publikováno v:
PoS(LATTICE2022)328
We present results for the hadronic running of the electromagnetic coupling and the weak mixing angle from simulations of lattice QCD with $N_f=2+1$ flavours of $O(a)$-improved Wilson fermions. Using two different discretisations of the vector curren
Externí odkaz:
http://arxiv.org/abs/2212.02366