G. L'opez-Castro

activity

20152022

τ \to π (K) ν_{τ} [γ]

: a reliable new physics test

29 citations · 63 across the 5 of their papers we have counts for

collaborators

5 papers

hep-ph2022★ 2 cited

Contribution of exclusive $(π^{0} π^{0}, π^{0} η, η η) γ$ channels to the leading order HVP of the muon $g - 2$

J. L. Gutiérrez-Santiago, G. López-Castro

We evaluate the contributions of $(π^{0} π^{0}, π^{0} η, η η) γ$ exclusive channels to the dispersion integral of the leading order HVP of the muon anomalous magnetic moment. These channels…

hep-ph2021★ 15 cited

One-loop determination of $τ \to π (K) ν_{τ} [γ]$ branching ratios and new physics tests

M. A. Arroyo-Ureña, G. Hernández-Tomé, G. López-Castro +2

We calculate the ratios $R_{τ / P} \equiv Γ (τ \to P ν_{τ} [γ]) /Γ (P \to μ ν_{μ} [γ])$ ( $P = π, K$ ) at one loop following a large- $N_{C}$ expansion where Chiral Perturbatio…

hep-ph2021★ 29 cited

Radiative corrections to $τ \to π (K) ν_{τ} [γ]$ : a reliable new physics test

M. A. Arroyo-Ureña, G. Hernández-Tomé, G. López-Castro +2

The ratios $R_{τ / P} \equiv Γ (τ \to P ν_{τ} [γ]) /Γ (P \to μ ν_{μ} [γ])$ ( $P = π, K$ ) provide sensitive tests of lepton universality $∣ g_{τ} / g_{μ} ∣ = 1$ and are a useful tool for new physi…

hep-ph2016★ 17 cited

$τ^{-} \to η^{(')} π^{-} ν_{τ} γ$ decays as backgrounds in the search for second class currents

A. Guevara, G. López-Castro, P. Roig

Observation of $τ^{-} \to η^{(')} π^{-} ν_{τ}$ decays at Belle-II would indicate either a manifestation of isospin symmetry breaking or genuine second class currents (SCC) effects. The…

hep-ph2015

$L \to l l^{'} l^{'} ν_{l} ν_{L}$ in the SM and beyond

A. Flores-Tlalpa, G. López-Castro, P. Roig

We study the $L \to l l^{'} l^{'} ν_{l} ν_{L}$ decays ( $L = τ, μ$ ; $l, l^{'} = μ, e$ ) in the Standard Model (SM) and in the effective field theory (EFT) description of the weak charged current at low e…

Contribution of exclusive (π0π0,π0η,ηη)γ channels to the leading order HVP of the muon g−2

One-loop determination of τ→π(K)ντ​[γ] branching ratios and new physics tests

Radiative corrections to τ→π(K)ντ​[γ]: a reliable new physics test

τ−→η(′)π−ντ​γ decays as backgrounds in the search for second class currents

L→ll′l′νl​νL​ in the SM and beyond

Contribution of exclusive $(π^{0} π^{0}, π^{0} η, η η) γ$ channels to the leading order HVP of the muon $g - 2$

One-loop determination of $τ \to π (K) ν_{τ} [γ]$ branching ratios and new physics tests

Radiative corrections to $τ \to π (K) ν_{τ} [γ]$ : a reliable new physics test

$τ^{-} \to η^{(')} π^{-} ν_{τ} γ$ decays as backgrounds in the search for second class currents

$L \to l l^{'} l^{'} ν_{l} ν_{L}$ in the SM and beyond