Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Agustín Sabio Vera"'
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 7, Pp 1-23 (2022)
Abstract We study the four-gluon scattering amplitude in the high energy limit of QCD written in terms of its conformal expansion. We highlight the need to include both even and odd conformal spin contributions in order to map it to an iterative repr
Externí odkaz:
https://doaj.org/article/20cae44aaeb240b7abb311728884f9cf
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 12, Pp 1-9 (2020)
Abstract We present an effective action for the electroweak sector of the standard model valid for the calculation of scattering amplitudes in the high energy (Regge) limit. Gauge invariant Wilson lines are introduced to describe reggeized degrees of
Externí odkaz:
https://doaj.org/article/2cb68d24a5e241a4a1612e0e2c645eb6
Autor:
Agustín Sabio Vera
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 1, Pp 1-23 (2020)
Abstract A study of the double logarithmic in the center-of-mass energy, s, contributions to the four-graviton scattering amplitude is presented for four-dimensional N $$ \mathcal{N} $$ ≥ 4 supergravities. This includes a novel representation for t
Externí odkaz:
https://doaj.org/article/e0ed2a58f2c540c99edb15af98f5beb5
Autor:
Agustín Sabio Vera
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 7, Pp 1-20 (2019)
Abstract The set of double-logarithmic (DL) contributions (α t ln2 s) n to the 4-graviton amplitude in N $$ \mathcal{N} $$ = 8 supergravity (SUGRA), with α being the gravitational coupling and (s, t) the Mandelstam invariants, is studied in impact
Externí odkaz:
https://doaj.org/article/c7e59d74c8564a599148e9f1002f69e4
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 78, Iss 6, Pp 1-12 (2018)
Abstract In the high energy limit of scattering amplitudes in Quantum Chromodynamics and supersymmetric theories the dominant Feynman diagrams are characterized by a hidden integrability in the planar limit. A well-known example is that of Odderon ex
Externí odkaz:
https://doaj.org/article/cc6353d7c3174ff59f8509562e8d3bb3
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 1, Pp 1-26 (2018)
Abstract We show that the use of Sudakov variables greatly simplifies the study of the solutions to the scattering equations in the Cachazo-He-Yuan formalism. We work in the center-of-mass frame for the two incoming particles, which partially fixes t
Externí odkaz:
https://doaj.org/article/e6d7f678479b4621a75c8b711182a513
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 5, Pp 1-29 (2017)
Abstract We study the projective properties of planar zeros of tree-level scattering amplitudes in various theories. Whereas for pure scalar field theories we find that the planar zeros of the five-point amplitude do not enjoy projective invariance,
Externí odkaz:
https://doaj.org/article/964ba23334f44f2e89fcebc34f7bb2f0
Autor:
Douglas A. Ross, Agustín Sabio Vera
Publikováno v:
Physics Letters B, Vol 760, Iss C, Pp 428-431 (2016)
We investigate the sensitivity of the discrete BFKL spectrum, which appears in the gluon Green function when the running coupling is considered, to a lower cut-off in the relative rapidities of the emitted particles. We find that the eigenvalues asso
Externí odkaz:
https://doaj.org/article/ce1a7412cc974436baffe2ee05b0cb3b