Non-standard interactions in $\tau^- \to (\pi^-\eta,\pi^-\pi^0)\nu_{\tau}$ decays

Autor: Gabriel López Castro

Publikováno v: SciPost Physics Proceedings, Iss 1, p 008 (2019)

Originally thought as clean processes to study the hadronization of the weak currents, semileptonic tau lepton decays can be useful to set constraints on non-standard (NS) weak interactions. In this talk we summarize our recent studies on the effects

Externí odkaz: https://doaj.org/article/65bd0135a87545feb7491a9428bb4437

Lightest pseudoscalar exchange contribution to light-by-light scattering piece of the muon g−2

Autor: Pablo Roig, Adolfo Guevara, Gabriel López Castro

Publikováno v: Nuclear and Particle Physics Proceedings. :2702-2704

Lightest pseudoscalar (P= pi^0, eta, eta') exchange contribution to the light-by-light (LbL) scattering piece of the muon anomaly, a_mu=(g_mu-2)/2, has been evaluated using a resonance chiral Lagrangian (R\chi L). Best description of pion transition

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7a006cf4492bd81e9c379a80470f365
https://doi.org/10.1016/j.nuclphysbps.2015.10.036

Lepton pair emission in the top quark decayt→bW+ℓ−ℓ+

Autor: Gabriel López Castro, Nestor Quintero, J. Lorenzo Diaz-Cruz

Publikováno v: Physical Review D. 89

The heaviness of the top quark makes its two-body Cabibbo-favored decay mode t → b W + to be dominant, at such a level that hardly any other decay mode reaches a detectable branching ratio within the Standard Model. Here we study the decay t → b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a05180d308b9ff33f69d36b0dc0227ee
https://doi.org/10.1103/physrevd.89.093014

CC and NC Pion Production

Autor: Gabriel López-Castro, Alejandro Edgardo Mariano, César Alberto Barbero

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP

The disappearance searching experiments vμ→vx use charged current quasielastic (CCQE) reaction to detect an arriving neutrino and reconstruct its energy, while the CC1π+ production can mimic the CCQE signal process. In vμ→ve appearance experim

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e67c582794fb093c0320bada96916fc5
http://sedici.unlp.edu.ar/handle/10915/81344

A new strategy for probing the Majorana neutrino CP violating phases and masses[sup 1]

Autor: David Delepine, Vannia González Macias, Shaaban Khalil, Gabriel López Castro, Alejandro Ayala, Guillermo Contreras, Ildefonso Leon, Pedro Podesta

Publikováno v: AIP Conference Proceedings.

We propose a new strategy for detecting the CP-violating phases and the effective mass of muon Majorana neutrinos by measuring observables associated with neutrino-antineutrino oscillations in $\pi^{\pm}$ decays. Within the generic framework of quant

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::11b5092c47d47eed0e62bfc4be726151
https://doi.org/10.1063/1.3622737