210 citations · 719 across the 13 of their papers we have counts for
13 papers · 1 filter
Next-to-leading power endpoint DIS and PDF factorization
M. Beneke, M. Schnubel, R. Szafron
We study deep-inelastic scattering (DIS) in the threshold region beyond leading power in at leading twist. In the framework of position-space soft-collinear effectiv…
The Fate of Ultra-Collinear Modes in On-Shell Massive Sudakov Form Factors
Marvin Schnubel, Jakob Schoenleber, Robert Szafron
Individual multi-loop diagrams for the massive Sudakov form factor contain an infinite tower of ultra-collinear momentum regions. We show that, for the on-shell form factor in QCD,…
Electron and Photon Structure Functions at Two Loops
Marvin Schnubel, Robert Szafron
We present a fully analytic computation of the complete electron and photon structure functions, or QED lepton parton distribution functions (PDFs) up to two-loop order. Our comput…
SMEFT Matching to Models at Dimension-8
Sally Dawson, Matthew Forslund, Marvin Schnubel
Heavy neutral gauge bosons arise in many motivated models of Beyond the Standard Model Physics. Experimental searches require that such gauge bosons are above the TeV scale in most…
Two-loop contributions of axion-like particles to electromagnetic and chromomagnetic form factors
Matthias Neubert, Marvin Schnubel
Axions and axion-like particles emerge in many models for physics beyond the Standard Model. Thus, they have gained increasing research interest in both experimental and theoretica…
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…
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…
The Two-Loop Radiative Gluon Jet Function for via a Light Quark Loop
Marvin Schnubel
The Higgs-boson production channel mediated by light-quark loops receives large logarithmic corrections in QCD, which can be resummed using factorization formulae derived…
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-…
Axion-like particles, lepton-flavor violation and a new explanation of and
Martin Bauer, Matthias Neubert, Sophie Renner +2
Axion-like particles (ALPs) with lepton-flavor violating couplings can be probed in exotic muon and tau decays. The sensitivity of different experiments depends strongly on the ALP…