Zobrazeno 1 - 10
of 17
pro vyhledávání: '"L. X. Gutiérrez-Guerrero"'
Publikováno v:
Physical Review
We calculate masses of light and heavy mesons as well as baryons of negative parity containing $u,d,s,c$ and $b$ quarks. It is an extension of our previous work where we had studied the positive parity baryons. We adopt a quark-diquark picture of bar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2778d9383b6a912c67efb3f6c04b367b
Publikováno v:
International Journal of Modern Physics A. 36:2150171
In this article, the mass spectra of mesons with one or two heavy quarks and their diquarks partners are estimated within a non-relativistic framework by solving Schr\"odinger equation with an effective potential inspired by a symmetry preserving Poi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f29b89539e66748e05087cd814983e8f
https://doi.org/10.1142/s0217751x21501712
https://doi.org/10.1142/s0217751x21501712
We compute masses of positive parity spin-$1/2$ and $3/2$ baryons composed of $u$, $d$, $s$, $c$ and $b$ quarks in a quark-diaquark picture. The mathematical foundation for this analysis is implemented through a symmetry-preserving Schwinger-Dyson eq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f045c614394f5608fd499169f8cb56bc
http://arxiv.org/abs/1911.09213
http://arxiv.org/abs/1911.09213
Publikováno v:
Physical Review D. 100
In this article, we employ transverse Takahashi identities to impose valuable non-perturbative constraints on the transverse part of the fermion-photon vertex in terms of new form factors, the so called $Y_i$ functions. We show that the implementatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75293762c6a2ceebc7f61c669f88acfc
https://doi.org/10.1103/physrevd.100.054028
https://doi.org/10.1103/physrevd.100.054028
Publikováno v:
Physical Review D. 95
There has been growing evidence that the infrared enhancement of the form factors defining the full quark-gluon vertex plays an important role in realizing a dynamical breakdown of chiral symmetry in quantum chromodynamics, leading to the observed sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3067a3a8473072a3a70aa64cff5fbc4b
https://doi.org/10.1103/physrevd.95.034041
https://doi.org/10.1103/physrevd.95.034041
Publikováno v:
Journal of Physics: Conference Series. 1208:012001
Gauge covariance properties of the scalar propagator in spinless/scalar quantum electrodynamics (SQED) are explored in the light of the corresponding Landau-Khalatnikov-Fradkin transformation (LKFT). These transformations are non perturbative in natu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::323271d80b05d0c44d535fff3f36ca9e
https://doi.org/10.1088/1742-6596/1208/1/012001
https://doi.org/10.1088/1742-6596/1208/1/012001
Non perturbative studies of Schwinger-Dyson equations (SDEs) require their infnite, coupled tower to be truncated in order to reduce them to a practically solvable set. In this connection, a physically acceptable ansatz for the three point vertex is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ecbd703e15e5f5e2a75d00a41ba4f93f
http://arxiv.org/abs/1603.01201
http://arxiv.org/abs/1603.01201
Autor:
Carlos Calcaneo-Roldan, Jose Rodríguez-Quintero, Maria Elena Tejeda-Yeomans, Bilal Masud, L. X. Gutiérrez-Guerrero, Adnan Bashir, Faisal Akram
Publikováno v:
Physical Review D. 87
We study chiral symmetry breaking for fundamental charged fermions coupled electromagnetically to photons with the inclusion of four-fermion contact self-interaction term. We employ multiplicatively renormalizable models for the photon dressing funct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e39f67595797c980ab9e2ffeafb176d0
https://doi.org/10.1103/physrevd.87.013011
https://doi.org/10.1103/physrevd.87.013011
Publikováno v:
Journal of Physics: Conference Series. 761:012063
Non perturbative studies of Schwinger-Dyson equations (SDEs) require their infinite, coupled tower to be truncated in order to reduce them to a practically solvable set. In this connection, a physically acceptable ansatz for the three point vertex is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a12706cb01c44806799787b4f1d02eda
https://doi.org/10.1088/1742-6596/761/1/012063
https://doi.org/10.1088/1742-6596/761/1/012063
Publikováno v:
Physical Review C. 83
We present a unified Dyson-Schwinger equation treatment of static and electromagnetic properties of pseudoscalar and vector mesons, and scalar and axial-vector diquark correlations, based upon a vector-vector contact interaction. A basic motivation f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c08f89f7969c93a81ebab1d0fca99e4f
https://doi.org/10.1103/physrevc.83.065206
https://doi.org/10.1103/physrevc.83.065206