Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Almeida, Eduardo da Silva"'
In this work, we study flavor-violating scalars (flavons) in a range of large masses that have not been explored previously. We model the interactions with an effective field theory formulation where the flavon is heavier than the top quark. In addit
Externí odkaz:
http://arxiv.org/abs/2407.12118
The search for double Higgs production in $b\bar{b}W^+W^-$, where both $W$ bosons decay to leptons, has been rehabilitated as a good option to look for that key process to the Standard Model scalar sector study in the LHC. The missing neutrinos, howe
Externí odkaz:
http://arxiv.org/abs/2402.10273
Autor:
Almeida, Eduardo da Silva
Neste trabalho consideramos extensões do Modelo Padrão contendo vértices quárticos anômalos parametrizados por operadores efetivos de dimensão oito. Estes alteram o comportamento das amplitudes do tipo VV VV, onde V pode ser o fóton, o bóson
We explore single and double flavor-violating scalar (flavon) production at the 13 and 14 TeV LHC in an effective field theory formulation where flavons always change the flavor of the Standard Model fermions. When those scalars couple to mass, their
Externí odkaz:
http://arxiv.org/abs/2306.14957
We study the lepton-induced resonant production of color-adjoint leptons (leptogluons) at the LHC employing the lepton parton density function of the proton. We demonstrate that this production mechanism can be useful to extend the LHC ability to sea
Externí odkaz:
http://arxiv.org/abs/2212.06178
We analyze the impact of the recently released CDF-II measurement of $W$ mass on the SMEFT analyses of the electroweak precision data as well as Higgs and electroweak diboson productions. We work in the Hagiwara, Ishihara, Szalapski, and Zeppenfeld b
Externí odkaz:
http://arxiv.org/abs/2204.10130
We present a comprehensive study of the electroweak interactions using the available Higgs and electroweak diboson production results from LHC Runs 1 and 2 as well as the electroweak precision data, in terms of the dimension-six operators. Under the
Externí odkaz:
http://arxiv.org/abs/2108.04828
Publikováno v:
Phys. Rev. D 102, 113002 (2020)
The off-shell Higgs production in pp -> ZZ at LHC provides at present the most direct measurement of the Higgs width in the absence of beyond the standard model contributions. Here, we analyze the impact of anomalous Z couplings to fermions on the Hi
Externí odkaz:
http://arxiv.org/abs/2007.15013
Publikováno v:
Phys. Rev. D 101, 113003 (2020)
We obtain the partial-wave unitarity constraints on the lowest-dimension effective operators which generate anomalous quartic gauge couplings but leave the triple gauge couplings unaffected. We consider operator expansions with linear and nonlinear r
Externí odkaz:
http://arxiv.org/abs/2004.05174
Publikováno v:
Phys. Rev. D 100, 013003 (2019)
We study the effect of operators generating dipole couplings of the light quarks to electroweak gauge bosons on several observables at LHC. We start by demonstrating that the determination of the gauge boson self-couplings from electroweak diboson pr
Externí odkaz:
http://arxiv.org/abs/1905.05187