2.6k citations · 10.3k across the 69 of their papers we have counts for
69 papers · 1 filter
Comment on 'Primary Dimensions'
G. Buchalla, O. Catà, A. Celis +1
We show that the concept of primary dimensions, first introduced in [1] as an organizing principle for chiral Lagrangians, is inconsistent. Although this had been pointed out alrea…
Anomalous Couplings from the Electroweak Chiral Lagrangian for Off-Shell Higgs in
Gerhard Buchalla, Florian Pandler
We investigate the production of (longitudinal) -boson pairs in gluon fusion as a probe of anomalous Higgs couplings. Of particular interest is the kinematic region of large cen…
Two-Higgs Doublet Model Matched to Nonlinear Effective Theory
G. Buchalla, F. König, Ch. Müller-Salditt +1
We use functional methods to match the Two-Higgs Doublet Model with heavy scalars in the nondecoupling regime to the appropriate nonlinear effective field theory, which takes the f…
and with Anomalous Couplings at Next-to-Leading Order in QCD
Gerhard Buchalla, Marius Höfer, Christoph Müller-Salditt
We generalize the next-to-leading order QCD calculations for the decay rates of and to the case of anomalous couplings of the Higgs boson. We demonstrate how thi…
Loop counting matters in SMEFT
G. Buchalla, G. Heinrich, Ch. Müller-Salditt +1
We show that, in addition to the counting of canonical dimensions, a counting of loop orders is necessary to fully specify the power counting of Standard Model Effective Field Theo…
Higgs boson potential at colliders: status and perspectives
B. Di Micco, M. Gouzevitch, J. Mazzitelli +104
This document summarises the current theoretical and experimental status of the di-Higgs boson production searches, and of the direct and indirect constraints on the Higgs boson se…
Complete One-Loop Renormalization of the Higgs-Electroweak Chiral Lagrangian
Claudius Krause, Gerhard Buchalla, Oscar Catà +2
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 fiel…
Master formula for one-loop renormalization of bosonic SMEFT operators
Gerhard Buchalla, Alejandro Celis, Claudius Krause +1
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 Eff…
Higher order and top mass effects in Higgs boson pair production beyond the Standard Model
Gerhard Buchalla, Alejandro Celis, Matteo Capozi +2
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 Effect…
Higgs boson pair production in non-linear Effective Field Theory with full -dependence at NLO QCD
G. Buchalla, M. Capozi, A. Celis +2
We present a calculation of the NLO QCD corrections to Higgs boson pair production within the framework of a non-linearly realised Effective Field Theory in the Higgs sector, descr…
Standard Model Extended by a Heavy Singlet: Linear vs. Nonlinear EFT
G. Buchalla, O. Cata, A. Celis +1
We consider the Standard Model extended by a heavy scalar singlet in different regions of parameter space and construct the appropriate low-energy effective field theories up to fi…
Comment on "Analysis of General Power Counting Rules in Effective Field Theory"
G. Buchalla, O. Cata, A. Celis +1
In a recent paper [1] a master formula has been presented for the power counting of a general effective field theory. We first show that this master formula follows immediately fro…
Fitting Higgs Data with Nonlinear Effective Theory
G. Buchalla, O. Cata, A. Celis +1
In a recent paper we showed that the electroweak chiral Lagrangian at leading order is equivalent to the conventional formalism used by ATLAS and CMS to test Higgs anomalous co…
Note on Anomalous Higgs-Boson Couplings in Effective Field Theory
G. Buchalla, O. Cata, A. Celis +1
We propose a parametrization of anomalous Higgs-boson couplings that is both systematic and practical. It is based on the electroweak chiral Lagrangian, including a light Higgs bos…
A Systematic Approach to the SILH Lagrangian
Gerhard Buchalla, Oscar Cata, Claudius Krause
We consider the electroweak chiral Lagrangian, including a light scalar boson, in the limit of small . Here is the electroweak scale and is the corresponding sca…
On the Power Counting in Effective Field Theories
Gerhard Buchalla, Oscar Cata, Claudius Krause
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 cons…
Nonstandard Higgs Couplings from Angular Distributions in
Gerhard Buchalla, Oscar Cata, Giancarlo D'Ambrosio
We compute the fully differential rate for the Higgs-boson decay , with . For these processes we assume the most general matrix elements…
Complete Electroweak Chiral Lagrangian with a Light Higgs at NLO
Gerhard Buchalla, Oscar Cata, Claudius Krause
We consider the Standard Model, including a light scalar boson , as an effective theory at the weak scale of some unknown dynamics of electroweak symmetry bre…
Effective Field Theory Analysis of New Physics in e+e- -> W+W- at a Linear Collider
G. Buchalla, O. Cata, R. Rahn +1
We analyze new physics contributions to at the TeV energy scale, employing an effective field theory framework. A complete basis of next-to-leading order operato…
Effective Theory of a Dynamically Broken Electroweak Standard Model at NLO
Gerhard Buchalla, Oscar Cata
We consider the Standard Model as an effective theory at the weak scale of a generic new strong interaction that dynamically breaks electroweak symmetry at the energy scale $Λ\…
Penguins with Charm and Quark-Hadron Duality
M. Beneke, G. Buchalla, M. Neubert +1
The integrated branching fraction of the process is dominated by resonance background from narrow charmonium states, such as , which exce…
B -> V_L V_L Decays at Next-to-Leading Order in QCD
Matthaeus Bartsch, Gerhard Buchalla, Christina Kraus
We compute the amplitudes for the two-body decay of mesons into longitudinally polarized light vector mesons at next-to-leading order in QCD. We give the explicit expressions i…
B, D and K decays
G. Buchalla, T. K. Komatsubara, F. Muheim +124
With the advent of the LHC, we will be able to probe New Physics (NP) up to energy scales almost one order of magnitude larger than it has been possible with present accelerator fa…
The Pattern of CP Asymmetries in Transitions
Gerhard Buchalla, Gudrun Hiller, Yosef Nir +1
New CP violating physics in transitions will modify the CP asymmetries in B decays into final CP eigenstates (, , , , and $ηK_…