913 citations · 2.2k across the 30 of their papers we have counts for
30 papers
form factors at large recoil: SCET analysis and a three-loop consistency check
Guido Bell, Philipp Böer, Thorsten Feldmann +2
The double-logarithmic series of non-relativistic form factors at large recoil is governed by a coupled set of integral equations, reflecting an intricate interplay b…
Complete next-to-next-to-leading order QCD corrections to the decay matrix in -meson mixing at leading power
Ulrich Nierste, Pascal Reeck, Vladyslav Shtabovenko +1
We compute next-to-next-to-leading order corrections to the decay width difference of mass eigenstates and the charge-parity (CP) asymmetry in flavour-specific decays…
FeynCalc 10.2 and FeynHelpers 2: Multiloop calculations streamlined
Vladyslav Shtabovenko
We present new versions of the Mathematica package FeynCalc and the FeynHelpers add-on that represent an important contribution to the collection of public codes for semi-automatic…
Current-current operator contribution to the decay matrix in -meson mixing at next-to-next-to-leading order of QCD
Marvin Gerlach, Ulrich Nierste, Pascal Reeck +2
We compute next-to-next-to-leading order perturbative corrections to the decay width difference of mass eigenstates and the charge-parity asymmetry in flavour-specific…
form factors at large recoil: Interplay of soft-quark and soft-gluon dynamics
Guido Bell, Philipp Böer, Thorsten Feldmann +2
We perform an all-order analysis of double-logarithmic corrections to the so-called soft-overlap contribution to heavy-to-light transition form factors at large hadronic recoil. Sp…
New multiloop capabilities of FeynCalc 10
Vladyslav Shtabovenko
We briefly introduce new multiloop capabilities of the Mathematica package FeynCalc 10 and a collection of interfaces connecting FeynCalc to such popular tools as QGRAF, Fiesta, py…
meson mixing at NNLO: technical aspects
Pascal Reeck, Vladyslav Shtabovenko, Matthias Steinhauser
We provide details to several technical aspects which are important for the calculation of next-to-next-to-leading order corrections to the mixing of neutral mesons. This inclu…
Summary of Working Group 4: Mixing and mixing-related violation in the B system: , , , , ,
Agnieszka Dziurda, Felix Erben, Marc Quentin Führing +8
This summary reviews contributions to the CKM 2023 workshop in Working Group 4: mixing and mixing-related violation in B system. The theoretical and experimental progress is d…
NNLO QCD corrections to in the system
Marvin Gerlach, Ulrich Nierste, Pascal Reeck +2
This report summarises recent advances made in the calculation of the NNLO QCD corrections to the width difference in the system. The inclusion of the e…
FeynCalc 10: Do multiloop integrals dream of computer codes?
Vladyslav Shtabovenko, Rolf Mertig, Frederik Orellana
In this work we report on a new version of FeynCalc, a Mathematica package widely used in the particle physics community for manipulating quantum field theoretical expressions and…
Soft-overlap contribution to form factors: diagrammatic resummation of double logarithms
Guido Bell, Philipp Böer, Thorsten Feldmann +2
Using diagrammatic resummation techniques, we investigate the double-logarithmic series of the "soft-overlap" contribution to transition form factors at large hadroni…
Summary of Working Group 4: Mixing and mixing-related violation in the system: , , , , ,
Veronika Chobanova, Matthew Wingate, Yosuke Yusa +12
This summary reviews contributions to the CKM 2021 workshop in Working Group 4. In particular, theoretical and experimental progress in determining meson mixing properties are…
The width difference in the system at next-to-next-to-leading order of QCD
Marvin Gerlach, Ulrich Nierste, Vladyslav Shtabovenko +1
We extend the theoretical prediction for the width difference in the mixing of neutral mesons in the Standard Model to next-to-next-to-leading order in . To this ai…
The width difference in \bbm\ at order and beyond
Marvin Gerlach, Ulrich Nierste, Vladyslav Shtabovenko +1
We complete the calculation of the element of the decay matrix in mixing, , to order in the leading power of the Heavy Quark Expansion. To t…
Bound-state formation, dissociation and decays of darkonium with potential non-relativistic Yukawa theory for scalar and pseudoscalar mediators
Simone Biondini, Vladyslav Shtabovenko
Dark matter models with light mediators featuring sizable interactions among dark particles enjoy an increasing attention in the model building community due to the elegance with w…
Towards two- and three-loop QCD corrections to the width difference in mixing
Vladyslav Shtabovenko
In this work we address the issue of large perturbative uncertainties in the theory prediction for , the width difference in the mixing process. To this…
NNLO QCD corrections to -meson mixing
Vladyslav Shtabovenko
We report on the calculation of next-to-next-to-leading order (NNLO) QCD corrections to the width difference in the neutral -meson mixing process . T…
Non-relativistic and potential non-relativistic effective field theories for scalar mediators
Simone Biondini, Vladyslav Shtabovenko
Yukawa-type interactions between heavy Dirac fermions and a scalar field are a common ingredient in various extensions of the Standard Model. Despite of that, the non-relativistic…
Two-loop QCD penguin contribution to the width difference in mixing
Marvin Gerlach, Ulrich Nierste, Vladyslav Shtabovenko +1
We consider two-loop QCD corrections to the element of the decay matrix in mixing, , in the leading power of the Heavy Quark Expansion. The calcul…
Energy-energy correlation in hadronic Higgs decays: analytic results and phenomenology at NLO
Jun Gao, Vladyslav Shtabovenko, Tong-Zhi Yang
In this work we complete the investigation of the recently introduced energy-energy correlation (EEC) function in hadronic Higgs decays at next-to-leading order (NLO) in fixed-orde…
FeynOnium: Using FeynCalc for automatic calculations in Nonrelativistic Effective Field Theories
Nora Brambilla, Hee Sok Chung, Vladyslav Shtabovenko +1
We present new results on FeynOnium, an ongoing project to develop a general purpose software toolkit for semi-automatic symbolic calculations in nonrelativistic Effective Field Th…
FeynCalc 9.3: New features and improvements
Vladyslav Shtabovenko, Rolf Mertig, Frederik Orellana
We present FeynCalc 9.3, a new stable version of a powerful and versatile Mathematica package for symbolic quantum field theory (QFT) calculations. Some interesting new features su…
Order corrections to Higgs boson decay into
Nora Brambilla, Hee Sok Chung, Wai Kin Lai +2
The process , where is the Higgs particle, provides a way to probe the size and the sign of the Higgs-charm coupling. In order to improve the theoretical control…
Analytic Next-To-Leading Order Calculation of Energy-Energy Correlation in Gluon-Initiated Higgs Decays
Ming-xing Luo, Vladyslav Shtabovenko, Tong-Zhi Yang +1
The energy-energy correlation (EEC) function in annihilation is currently the only QCD event shape observable for which we know the full analytic result at the next-to-lea…