1.5k citations · 23k across the 212 of their papers we have counts for
211 papers · 1 filter
ALP-LEFT Interference and the Muon
Anne Mareike Galda, Matthias Neubert
The low-energy effective field theory (LEFT) provides the appropriate framework to describe particle interactions below the scale of electroweak symmetry breaking, . By…
at Next-to-Leading Order in Chiral Perturbation Theory and Updated Bounds on ALP Couplings
Claudia Cornella, Anne Mareike Galda, Matthias Neubert +1
The weak decays offer a powerful probe of axion-like particles (ALPs). In this work, we provide a comprehensive analysis of these processes within chiral perturba…
Glauber Phases in Non-Global LHC Observables: Resummation for Quark-Initiated Processes
Philipp Böer, Matthias Neubert, Michel Stillger
It has been known for many years that jet cross sections at hadron colliders exhibit double-logarithmic corrections starting at four-loop order, arising from two soft Glauber-gluon…
A global analysis of axion-like particle interactions using SMEFT fits
Anke Biekötter, Javier Fuentes-Martín, Anne Mareike Galda +1
In the presence of an axion or axion-like particle (ALP) that couples to the Standard Model via dimension-five interactions, dimension-six SMEFT interactions are generated via reno…
Factorization of Non-Global LHC Observables and Resummation of Super-Leading Logarithms
Thomas Becher, Matthias Neubert, Ding Yu Shao +1
We present a systematic formalism based on a factorization theorem in soft-collinear effective theory to describe non-global observables at hadron colliders, such as gap-between-je…
Factorization at Next-to-Leading Power and Endpoint Divergences in Production
Ze Long Liu, Matthias Neubert, Marvin Schnubel +1
We derive a factorization theorem for the Higgs-boson production amplitude in gluon-gluon fusion induced by a light-quark loop, working at next-to-leading power in soft-collinear e…
Structure-Dependent QED Effects in Exclusive B Decays at Subleading Power
Claudia Cornella, Matthias König, Matthias Neubert
We derive a factorization theorem for the structure-dependent QED effects in the weak exclusive process , i.e., effects probing the internal structure of th…
Report of the Topical Group on Physics Beyond the Standard Model at Energy Frontier for Snowmass 2021
Tulika Bose, Antonio Boveia, Caterina Doglioni +318
This is the Snowmass2021 Energy Frontier (EF) Beyond the Standard Model (BSM) report. It combines the EF topical group reports of EF08 (Model-specific explorations), EF09 (More gen…
New Physics Searches at Kaon and Hyperon Factories
Evgueni Goudzovski, Diego Redigolo, Kohsaku Tobioka +61
Rare meson decays are among the most sensitive probes of both heavy and light new physics. Among them, new physics searches using kaons benefit from their small total decay widths…
Radiative Quark Jet Function with an External Gluon
Ze Long Liu, Matthias Neubert, Marvin Schnubel +1
Factorization theorems in soft-collinear effective theory at subleading order in power counting involve ``radiative jet functions'', defined in terms of matrix elements of collinea…
Flavor probes of axion-like particles
Martin Bauer, Matthias Neubert, Sophie Renner +2
Axions and axion-like particles (ALPs) are well-motivated low-energy relics of high-energy extensions of the Standard Model (SM). We investigate the phenomenology of an ALP with fl…
Resummation of Super-Leading Logarithms
Thomas Becher, Matthias Neubert, Ding Yu Shao
Jet cross sections at high-energy colliders exhibit intricate patterns of logarithmically enhanced higher-order corrections. In particular, so-called non-global logarithms emerge f…
ALP-SMEFT Interference
Anne Mareike Galda, Matthias Neubert, Sophie Renner
The Standard Model Effective Field Theory (SMEFT) offers a powerful theoretical framework for parameterizing the low-energy effects of heavy new particles with masses far above the…
Reading the footprints of the B-meson flavor anomalies
Claudia Cornella, Darius A. Faroughy, Javier Fuentes-Martin +2
Motivated by the recent LHCb announcement of a violation of lepton-flavor universality in the ratio , we present an updated, comprehen…
Consistent treatment of axions in the weak chiral Lagrangian
Martin Bauer, Matthias Neubert, Sophie Renner +2
We present a consistent implementation of weak decays involving an axion or axion-like particle in the context of an effective chiral Lagrangian. We argue that previous treatments…
The Low-Energy Effective Theory of Axions and ALPs
Martin Bauer, Matthias Neubert, Sophie Renner +2
Axions and axion-like particles (ALPs) are well-motivated low-energy relics of high-energy extensions of the Standard Model, which interact with the known particles through higher-…
Effective Field Theory for Leptoquarks
Bianka Mecaj, Matthias Neubert
Leptoquarks enter in several extensions of the Standard Model as possible solutions to a number of observed anomalies. We work within the soft-collinear effective theory framework…
Effective Field Theory for Heavy Vector Resonances Coupled to the Standard Model
Mathias Heiles, Matthias König, Matthias Neubert
We construct an effective field theory describing the decays of a heavy vector resonance into Standard Model particles. The effective theory is built using an extension of Soft…
A warped scalar portal to fermionic dark matter
Adrian Carmona, Javier Castellano Ruiz, Matthias Neubert
We argue that extensions of the SM with a warped extra dimension, together with a new -odd scalar singlet, provide a natural explanation not only for the hierarchy pr…
Factorization at Subleading Power and Endpoint Divergences in Decay: II. Renormalization and Scale Evolution
Ze Long Liu, Bianka Mecaj, Matthias Neubert +1
Building on the recent derivation of a bare factorization theorem for the -quark induced contribution to the decay amplitude based on soft-collinear effective theory, w…
Factorization at Subleading Power, Sudakov Resummation and Endpoint Divergences in Soft-Collinear Effective Theory
Ze Long Liu, Bianka Mecaj, Matthias Neubert +1
Starting from the first renormalized factorization theorem for a process described at subleading power in soft-collinear effective theory, we discuss the resummation of Sudakov log…
Evolution of the -Meson Light-Cone Distribution Amplitude in Laplace Space
Anne Mareike Galda, Matthias Neubert
The -meson light-cone distribution amplitude is a central quantity governing non-perturbative hadronic dynamics in exclusive decays. We show that the information needed to d…
Renormalization and Scale Evolution of the Soft-Quark Soft Function
Ze Long Liu, Bianka Mecaj, Matthias Neubert +2
Soft functions defined in terms of matrix elements of soft fields dressed by Wilson lines are central components of factorization theorems for cross sections and decay rates in col…
Two-Loop Radiative Jet Function for Exclusive -Meson and Higgs Decays
Ze Long Liu, Matthias Neubert
The rare radiative -meson decay and the radiative Higgs-boson decay mediated by light-quark loops both receive large logarithmic corrections in QCD…