Zobrazeno 1 - 10
of 1 099
pro vyhledávání: '"Cherchiglia, A."'
Recent efforts, both theoretical and experimental, have increasingly focused on the scalar potential of the Standard Model, with a highlight on the trilinear Higgs coupling. This parameter has long been recognized for its potential to test Beyond-Sta
Externí odkaz:
http://arxiv.org/abs/2411.00094
The decays of the Z boson and CP-even or CP-odd scalar bosons into quark-antiquark pairs have been calculated at NLO in the framework of Implicit Regularization (IReg) , which operates strictly in the physical dimension and complies with the BPHZ pro
Externí odkaz:
http://arxiv.org/abs/2410.07944
We investigate how the solution to the strong CP problem and the explanation for the observed fermion mass hierarchies can be intrinsically related. Specifically, we explore the Nelson-Barr mechanism and identify its "seesaw limit", where light quark
Externí odkaz:
http://arxiv.org/abs/2404.16945
We examine the subtleties of regularization schemes in four-dimensional space ($4S$), related in particular to the introduction of the $\gamma_5$ matrix. To illustrate we use a "Bumblebee" model featuring dynamically induced Lorentz symmetry violatio
Externí odkaz:
http://arxiv.org/abs/2404.15551
Autor:
Cherchiglia, Adriano, Pasquini, Pedro, Peres, O. L. G., Rodrigues, F. F., Rossi, R. R., Souza, E. S.
Since neutrino oscillation was observed, several experiments have been built to measure its parameters. NO$\nu$A and T2K are two long-baseline experiments dedicated to measuring mainly the mixing angle $\theta_{23}$, the charge-parity conjugation pha
Externí odkaz:
http://arxiv.org/abs/2310.18401
Autor:
Cherchiglia, Adriano, Santiago, Jose
Neutrino experiments, in the next years, aim to determine with precision all the six parameters of the three-neutrino standard paradigm. The complete success of the experimental program is, nevertheless, attached to the non-existence (or at least sma
Externí odkaz:
http://arxiv.org/abs/2309.15924
We employ implicit regularization (IReg) in quark-antiquark decays of the Z, or of a scalar (CP-even or odd) boson at NLO, and compare with dimensional schemes to reveal subtleties involving infrared divergence cancellation and $\gamma_5$-matrix issu
Externí odkaz:
http://arxiv.org/abs/2305.07129
Autor:
Alves, João M., Branco, G. C., Cherchiglia, A. L., Nishi, C. C., Penedo, J. T., Pereira, Pedro M. F., Rebelo, M. N., Silva-Marcos, J. I.
Publikováno v:
Physics Reports 1057 (2024) 1-69
We review the theory and phenomenology of isosinglet vector-like quarks (VLQs). In recent years, interest in VLQs has been increasing, due to their contributions to new physics effects that can be tested in experiments at LHC and High-Luminosity LHC.
Externí odkaz:
http://arxiv.org/abs/2304.10561
Nelson-Barr models solve the strong CP problem based on spontaneous CP violation and generically requires vector-like quarks (VLQs) mixing with standard quarks to transmit the CP violation. We devise an explicit parametrization for the case of two VL
Externí odkaz:
http://arxiv.org/abs/2304.06078
One simple way to lower the scale of the seesaw mechanism that generates neutrino masses is to attribute part of their smallness to a suppressed vacuum expectation value of a second Higgs doublet as in the neutrinophilic 2HDM or in the type IB seesaw
Externí odkaz:
http://arxiv.org/abs/2304.00038