Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Bayona, C. A. Ballon"'
Autor:
Bayona, C. A. Ballon, Boschi-Filho, Henrique, Braga, Nelson R. F., Ihl, Matthias, Torres, Marcus A. C.
Publikováno v:
Nucl Phys B 866 (2013) 124
We investigate the production of positive parity baryon resonances in proton electromagnetic scattering within the Sakai-Sugimoto model. The latter is a string model for the non-perturbative regime of large $N_c$ QCD. Using holographic techniques we
Externí odkaz:
http://arxiv.org/abs/1112.1439
In this proceeding we review some of our recent results for the vector meson electromagnetic form factors and structure functions in the Sakai-Sugimoto model. The latter is a string model that describes many features of the non-perturbative regime of
Externí odkaz:
http://arxiv.org/abs/1111.1658
Publikováno v:
JHEP 1106:092,2011
We study the instability of the low-temperature QCD vacuum at large-N_c due to an axial chemical potential, using the holographic Sakai-Sugimoto model. We explicitly construct the ground state of the theory, which corresponds to a translationally non
Externí odkaz:
http://arxiv.org/abs/1104.2291
Publikováno v:
JHEP 1109:026,2011
Recently, Dymarsky, Kuperstein and Sonnenschein constructed an embedding of flavor D7- and anti-D7-branes in the Klebanov-Strassler geometry that breaks the supersymmetry of the background, yet is stable. In this article, we study in detail the spect
Externí odkaz:
http://arxiv.org/abs/1010.0993
Publikováno v:
Nucl.Phys.B851:66-85,2011
We propose a holographic model for dilepton production in proton-proton collisions based on the exchange of vector mesons. The holographic hard wall model is used to describe the dynamics and interactions of vector mesons and baryons. We estimate the
Externí odkaz:
http://arxiv.org/abs/1007.4362
Publikováno v:
JHEP 1010:055,2010
We study deep inelastic scattering for vector and axial vector mesons in the holographic D4-D8 brane model. We consider tree level contributions with one particle in the final hadronic state. We obtain the unpolarized structure functions F1 and F2 fo
Externí odkaz:
http://arxiv.org/abs/1007.2448
Publikováno v:
JHEP 1008:122,2010
We study phenomenological aspects of the holographic model of chiral symmetry breaking recently introduced by Kuperstein and Sonnenschein (KS). As a first step, we calculate the spectrum of vector and axial-vector mesons in the KS model. We numerical
Externí odkaz:
http://arxiv.org/abs/1006.2363
Publikováno v:
Class.Quant.Grav.28:015011,2011
Inspired by the AdS/CFT correspondence we propose a new duality that allow the study of strongly coupled field theories living in a 2+1 conical space-time. Solving the 4-d Einstein equations in the presence of an infinite static string and negative c
Externí odkaz:
http://arxiv.org/abs/1003.5396
Publikováno v:
Phys.Rev.D81:086003,2010
We investigate the propagation of a space-like flavour current in a strongly coupled N = 2 super Yang-Mills plasma using the D3-D7 brane model at finite temperature. The partonic contribution to the plasma structure functions is obtained from the ima
Externí odkaz:
http://arxiv.org/abs/0912.0231
Publikováno v:
Nucl.Phys.Proc.Suppl.199:119-124,2010
We review in this proceedings some recent results for vector meson form factors obtained using the holographic D4-D8 brane model. The D4-D8 brane model, proposed by Sakai and Sugimoto, is a holographic dual of a semi-realistic strongly coupled large
Externí odkaz:
http://arxiv.org/abs/0912.0191