Zobrazeno 1 - 10
of 290
pro vyhledávání: '"W de Paula"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 8, Pp 1-8 (2024)
Abstract A conformal invariant QED-inspired model is solved for a general covariant linear gauge using the Dyson–Schwinger equations for the propagators assuming a pure vector like interaction. The leading corrections to the asymptotic solutions an
Externí odkaz:
https://doaj.org/article/3a87c6bdae6e4cdf98fa4c602976c8a6
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 3, Pp 1-8 (2024)
Abstract This work investigates static and dynamical quark star properties within a $$D_3{-}D_7$$ D 3 - D 7 holographic model. We solve the Tolman–Oppenheimer–Volkoff equations for the quark matter equation of state obtained from the brane config
Externí odkaz:
https://doaj.org/article/a7ab1401e7a44acdaa29975e08937430
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 10, Pp 1-30 (2023)
Abstract The unpolarized twist-2 (leading) and twist-3 (subleading), T-even, transverse-momentum dependent quark distributions in the pion are evaluated for the first time by using the actual solution of a dynamical equation in Minkowski space. The a
Externí odkaz:
https://doaj.org/article/30d2d5d9d48e4f0c8ff70274d900cd5c
Publikováno v:
Physics Letters B, Vol 846, Iss , Pp 138174- (2023)
Strange axial-vector kaons, K1, and f1 meson resonances are investigated in the 4-flavor AdS/QCD model. Their underlying differential configurational entropy is computed and the mass spectra of higher-excited resonances, in both these mesonic familie
Externí odkaz:
https://doaj.org/article/cf7f424d827745bfb9b5f5f60d86ccc9
Publikováno v:
Physics Letters B, Vol 845, Iss , Pp 138159- (2023)
The Bethe-Salpeter equation for a pseudoscalar bound-system, with i) a ladder kernel with massive gluons, ii) dynamically-dressed quark mass function and iii) an extended quark-gluon vertex, is solved in Minkowski space by using the Nakanishi integra
Externí odkaz:
https://doaj.org/article/1436e2012ad740e3a6c3ac6e4c498ad6
Publikováno v:
Physics Letters B, Vol 820, Iss , Pp 136494- (2021)
The pion electromagnetic form factor has been calculated for the first time from the solutions of the Bethe-Salpeter equation, obtained directly in Minkowski space by using the Nakanishi integral representation of the Bethe-Salpeter amplitude. The on
Externí odkaz:
https://doaj.org/article/1f95a93bfaef4368bf58c2c9f769ad97
Autor:
W. de Paula-Júnior, R.C.R.M. do Nascimento, R.S. Matiles, F.F. de Lima-Neto, M.C.R. Leles, H.N. Guimarães, A. Grabe-Guimarães
Publikováno v:
Brazilian Journal of Medical and Biological Research, Vol 54, Iss 11 (2021)
The present study focused on the scenario of confirmed cases of SARS-CoV-2 infection in the state of Minas Gerais (MG), Brazil, from March 2020 to March 2021. We evaluated the evolution of COVID-19 prevalence and death in one municipality from each o
Externí odkaz:
https://doaj.org/article/a845118381e844388da833f76ab875a3
Publikováno v:
Physics Letters B, Vol 803, Iss , Pp - (2020)
We propose a medium-modified holographic-hadron dynamics suitable for the study of symmetric nuclear matter, with a key property of a simple law for the evolution of the five dimensional mass with the scalar background field. We show that the model s
Externí odkaz:
https://doaj.org/article/4807442b98cc4cb2a907cc31e818080e
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 78, Iss 11, Pp 1-8 (2018)
Abstract In this work we derive and analyse cosmological scenarios coming from multi-component scalar field models. We consider a direct sum of a sine-Gordon with a Z2 model, and also a combination of those with a BNRT model. Moreover, we work with a
Externí odkaz:
https://doaj.org/article/9fa548aed831406692a991aaacc0c9ab
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 78, Iss 7, Pp 1-7 (2018)
Abstract The soft gluon limit of the longitudinal part of the quark-gluon vertex is studied by resorting to non-perturbative approaches to quantum chromodynamics (QCD). Based on a Slavnov–Taylor identity (STI), the longitudinal form factors is expr
Externí odkaz:
https://doaj.org/article/2e05bf49539c48799f261a306dbecbaf