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pro vyhledávání: '"Cappiello, Luigi"'
We evaluate the contribution of scalar mesons to the hadronic light-by-light piece of the muon anomalous magnetic moment, using a warped five-dimensional model and holographic methods. We assess the contribution of the lightest, sub-GeV scalars $\sig
Externí odkaz:
http://arxiv.org/abs/2110.05962
Akademický článek
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Publikováno v:
Phys. Rev. D 102, 016009 (2020)
Despite recent developments, there are a number of conceptual issues on the hadronic light-by-light (HLbL) contribution to the muon $(g-2)$ which remain unresolved. One of the most controversial ones is the precise way in which short-distance constra
Externí odkaz:
http://arxiv.org/abs/1912.02779
We point out that, given the current experimental status of radiative kaon decays, a subclass of the ${\cal O} (p^4)$ counterterms of the weak chiral lagrangian can be determined in closed form. This involves in a decisive way the decay $K^\pm \to \p
Externí odkaz:
http://arxiv.org/abs/1712.10270
The soft wall model in holographic QCD has Regge trajectories but wrong operator product expansion (OPE) for the two-point vectorial QCD Green function. We modify the dilaton potential to comply OPE. We study also the axial two-point function using t
Externí odkaz:
http://arxiv.org/abs/1505.01000
Autor:
Cappiello, Luigi1,2 luigi.cappiello@na.infn.it
Publikováno v:
EPJ Web of Conferences. 11/17/2022, Vol. 270, p1-8. 8p.
Motivated by the recent evidence for direct CP-violation in D0 -> h+h- decays, we provide an exhaustive study of both Cabibbo-favored and Cabibbo-suppressed (singly and doubly) D0 -> h1+h2-l+l- decays. In particular, we study the Dalitz plot for the
Externí odkaz:
http://arxiv.org/abs/1209.4235
We study the decay K^+ -> pi^+ pi^0 e^+ e^-, currently under analysis by the NA62 Collaboration at CERN. In particular, we provide a detailed analysis of the Dalitz plot for the long-distance, gamma^*-mediated, contributions (Bremsstrahlung, direct e
Externí odkaz:
http://arxiv.org/abs/1112.5184
We apply the double-trace formalism to incorporate nonleptonic weak interactions of hadrons into holographic models of the strong interactions. We focus our attention upon $\Delta S=1$ nonleptonic kaon decays. By working with a Yang-Mills--Chern-Simo
Externí odkaz:
http://arxiv.org/abs/1106.0467
Publikováno v:
Phys.Rev.D83:093006,2011
We study the anomalous electromagnetic pion form factor $F_{\pi^0\gamma^*\gamma^*}$ with a set of holographic models. By comparing with the measured value of the linear slope, some of these models can be ruled out. From the remaining models we obtain
Externí odkaz:
http://arxiv.org/abs/1009.1161