Zobrazeno 1 - 10
of 123
pro vyhledávání: '"Buchalla, Gerhard"'
We generalize the next-to-leading order QCD calculations for the decay rates of $h\to gg$ and $h\to\gamma\gamma$ to the case of anomalous couplings of the Higgs boson. We demonstrate how this computation can be done in a consistent way within the fra
Externí odkaz:
http://arxiv.org/abs/2212.08560
Publikováno v:
PoS(CD2018)072
The electroweak sector of the Standard Model can be formulated in a way similar to Chiral Perturbation Theory (ChPT), but extended by a singlet scalar. The resulting effective field theory (EFT) is called Higgs-Electroweak Chiral Lagrangian (EWCh$\ma
Externí odkaz:
http://arxiv.org/abs/1907.07605
Using background-field method and super-heat-kernel expansion, we derive a master formula for the one-loop UV divergences of the bosonic dimension-6 operators in Standard Model Effective Field Theory (SMEFT). This approach reduces the calculation of
Externí odkaz:
http://arxiv.org/abs/1904.07840
We discuss the interplay between NLO QCD corrections and anomalous couplings in Higgs boson pair production via gluon fusion, within the framework of a non-linearly realised Effective Field Theory, described by the electroweak chiral Lagrangian. We s
Externí odkaz:
http://arxiv.org/abs/1807.11839
We consider the electroweak chiral Lagrangian, including a light scalar boson, in the limit of small $\xi=v^2/f^2$. Here $v$ is the electroweak scale and $f$ is the corresponding scale of the new strong dynamics. We show how the conventional SILH Lag
Externí odkaz:
http://arxiv.org/abs/1412.6356
We discuss the systematics of power counting in general effective field theories, focussing on those that are nonrenormalizable at leading order. As an illuminating example we consider chiral perturbation theory gauged under the electromagnetic $U(1)
Externí odkaz:
http://arxiv.org/abs/1312.5624
We compute the fully differential rate for the Higgs-boson decay $h\to Z\ell^+\ell^-$, with $Z\to\ell^{'+}\ell^{'-}$. For these processes we assume the most general matrix elements within an effective Lagrangian framework. The electroweak chiral Lagr
Externí odkaz:
http://arxiv.org/abs/1310.2574
We consider the Standard Model, including a light scalar boson $h$, as an effective theory at the weak scale $v=246\,{\rm GeV}$ of some unknown dynamics of electroweak symmetry breaking. This dynamics may be strong, with $h$ emerging as a pseudo-Gold
Externí odkaz:
http://arxiv.org/abs/1307.5017
Autor:
Buchalla, Gerhard, Cata, Oscar
Publikováno v:
JHEP 1207 (2012) 101
We consider the Standard Model as an effective theory at the weak scale $v$ of a generic new strong interaction that dynamically breaks electroweak symmetry at the energy scale $\Lambda\sim $ (few) TeV. Assuming only the minimal field content with th
Externí odkaz:
http://arxiv.org/abs/1203.6510
Autor:
Buchalla, Gerhard
Publikováno v:
Nucl.Phys.Proc.Suppl.209:137-142,2010
We discuss how the combined analysis of $B\to K\nu\bar\nu$ and $B\to Kl^+l^-$ can provide us with new physics tests practically free of form factor uncertainties. Residual theory errors are at the level of several percent. This study underlines the e
Externí odkaz:
http://arxiv.org/abs/1010.2674