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pro vyhledávání: '"Lopez Castro, G."'
We evaluate the contributions of $(\pi^0\pi^0, \pi^0\eta, \eta\eta)\gamma$ exclusive channels to the dispersion integral of the leading order HVP of the muon anomalous magnetic moment. These channels are included in some way in previous evaluations o
Externí odkaz:
http://arxiv.org/abs/2205.07130
Publikováno v:
JHEP02(2022)173
We calculate the ratios $R_{\tau / P}\equiv \Gamma \left( \tau \to P \nu_{\tau}[\gamma] \right) / \Gamma \left(P\to \mu \nu_{\mu}[\gamma]\right)$ ($P=\pi,K$) at one loop following a large-$N_C$ expansion where Chiral Perturbation Theory is enlarged b
Externí odkaz:
http://arxiv.org/abs/2112.01859
Publikováno v:
Phys. Rev. D 104, L091502 2021
The ratios $R_{\tau/P}\equiv \Gamma(\tau \to P \nu_\tau [\gamma]) / \Gamma(P \to\mu \nu_\mu[\gamma])$ ($P=\pi, K$) provide sensitive tests of lepton universality $\left|g_\tau/g_\mu\right|=1$ and are a useful tool for new physics searches. The radiat
Externí odkaz:
http://arxiv.org/abs/2107.04603
Publikováno v:
Phys. Rev. D 95, 054015 (2017)
Observation of $\tau^-\to\eta^{(\prime)}\pi^-\nu_\tau $ decays at Belle-II would indicate either a manifestation of isospin symmetry breaking or genuine second class currents (SCC) effects. The corresponding radiative $\tau^-\to\eta^{(\prime)}\pi^-\n
Externí odkaz:
http://arxiv.org/abs/1612.03291
Publikováno v:
Phys. Rev. D 95, 013003 (2017)
Semileptonic $b \to c$ transitions, and in particular the ratios $R(D^{(*)}) = \frac{\Gamma(B \rightarrow D^{(*)} \tau \nu )}{\Gamma(B \rightarrow D^{(*)} \ell \nu )}$, can be used to test the universality of the weak interactions. In light of the re
Externí odkaz:
http://arxiv.org/abs/1610.04190
Publikováno v:
Journal of University of Science and Technology of China, Vol. 46, No. 5, May 2016, pages 392-397
We study the $L\to l l' l' \nu_l \nu_L$ decays ($L=\tau,\mu$; $l,l'=\mu,e$) in the Standard Model (SM) and in the effective field theory (EFT) description of the weak charged current at low energy, both for polarized and unpolarized $L$, keeping the
Externí odkaz:
http://arxiv.org/abs/1510.07985
Publikováno v:
Phys.Rev.D80:055017,2009
We study flavor violating processes in the production or decay of a neutral pseudoscalar meson $P^0$ in the framework of a general two Higgs Doublet Model type III (2HDM-III). We use a version of the model where Yukawa interactions of neutral Higgs b
Externí odkaz:
http://arxiv.org/abs/0905.3351
Publikováno v:
Phys.Rev.D77:094010,2008
Top quark decays are of particular interest as a mean to test the standard model (SM) predictions, both for dominant (t -> b + W) and rare decays (t -> q + W, cV, cVV, c phi^{0}, bWZ). As the latter are highly suppressed, they become an excellent win
Externí odkaz:
http://arxiv.org/abs/0712.3782
Publikováno v:
In Nuclear and Particle Physics Proceedings March 2015 260:70-74
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