Zobrazeno 1 - 10
of 115
pro vyhledávání: '"Espriu, Domènec"'
Loss of unitarity in an effective field theory is often cured by the appearance of dynamical resonances, revealing the presence of new degrees of freedom. These resonances may manifest themselves when suitable unitarization techniques are implemented
Externí odkaz:
http://arxiv.org/abs/2305.03622
In this work we explore in detail the presence of scalar resonances in $WW$ fusion process in the context of the LHC experiments working in the theoretical framework provided by Higgs Effective Field Theories (HEFT). While the phenomenology of vector
Externí odkaz:
http://arxiv.org/abs/2301.13030
In this work we interpret the Einstein-Hilbert (EH) Lagrangian of gravitation as the first term of a low-energy effective theory similar to those considered in the chiral Lagrangian approach to low-energy hadron physics or the electroweak chiral Lagr
Externí odkaz:
http://arxiv.org/abs/2211.10406
Some effective field theories exhibit dynamical resonances that, when properly included, mitigate their bad behaviour at high energies. Unitarization of the partial wave amplitudes is the preferred method to unveil such resonances. Interpreting the E
Externí odkaz:
http://arxiv.org/abs/2207.06070
We analize the most general low-energy effective lagrangian including local parity violating terms parametrized by an axial chemical potential $\mu_5$. This result is obtained following the external source method, up to $\mathcal{O}(p^4)$ order in th
Externí odkaz:
http://arxiv.org/abs/2112.13038
Effective field theories are useful tools to search for physics beyond the Standard Model (SM). However, effective theories can lead to non-unitary behavior with fastly growing amplitudes. This unphysical behavior may lead to large sensitivity to SM
Externí odkaz:
http://arxiv.org/abs/2109.02673
Autor:
Espriu, Domènec, Rodoreda, Marc
Some time ago it was pointed out that the presence of cosmological components could affect the propagation of gravitational waves (GW) beyond the usual cosmological redshift and that such effects might be observable in pulsar timing arrays. These ana
Externí odkaz:
http://arxiv.org/abs/2108.09567
Autor:
Espriu, Domenec, Katanaeva, Alisa
Publikováno v:
Phys. Rev. D 103, 055006 (2021)
We reassess employing the holographic technique to the description of 4D minimal composite Higgs model with $SO(5)\to SO(4)$ global symmetry breaking pattern. The particular 5D bottom-up holographic treatment is inspired by previous work in the conte
Externí odkaz:
http://arxiv.org/abs/2008.06207
We construct the most general low-energy effective lagrangian including local parity violating terms parametrized by an axial chemical potential or chiral imbalance $\mu_5$, up to ${\cal O}(p^4)$ order in the chiral expansion for two light flavours.
Externí odkaz:
http://arxiv.org/abs/2002.11696
Autor:
Espriu, Domenec, Katanaeva, Alisa
Publikováno v:
Phys. Rev. D 101, 074017 (2020)
We put forward a new bottom-up AdS/QCD holographic model bearing a distinct treatment of the pion fields. We argue that a standard approach to the pion description is neither transparent nor totally satisfactory. In the paper we provide a new one bas
Externí odkaz:
http://arxiv.org/abs/2001.08723