Pascal Reeck

activity

20242026

collaborators

8 papers

hep-ph2026

Next-to-next-to-leading QCD corrections to the $B^{+}$ - $B_{d}^{0}$ , $D^{+}$ - $D^{0}$ , and $D_{s}^{+}$ - $D^{0}$ lifetime ratios

Francesco Moretti, Ulrich Nierste, Pascal Reeck +1

The total decay widths of heavy mesons can be systematically calculated in terms of an expansion in the two parameters $1/ m_{Q}$ and $α_{s} (m_{Q})$ , where $Q = c, b$ denotes the heavy quark…

hep-ph2025

Complete next-to-next-to-leading order QCD corrections to the decay matrix in $B$ -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 $a_{fs}$ in flavour-specific decays…

hep-ph2025

Current-current operator contribution to the decay matrix in $B$ -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 $a_{fs}$ in flavour-specific…

hep-ph2025

Kaon Physics: A Cornerstone for Future Discoveries

Jason Aebischer, Atakan Tugberk Akmete, Riccardo Aliberti +153

The kaon physics programme, long heralded as a cutting-edge frontier by the European Strategy for Particle Physics, continues to stand at the intersection of discovery and innovati…

hep-ph2024

Update on technical aspects of $B$ meson mixing at NNLO

Pascal Reeck

This report summarises important technical challenges and their solutions in the calculation of the next-to-next-to-leading order QCD corrections to the width difference $Δ Γ_{s}$ in…

hep-ph2024

$B$ 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 $B$ mesons. This inclu…

hep-ph2024

Summary of Working Group 4: Mixing and mixing-related $C P$ violation in the B system: $Δ m$ , $ΔΓ$ , $ϕ_{s}$ , $ϕ_{1} / α$ , $ϕ_{2} / β$ , $ϕ_{3} / γ$

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 $C P$ violation in B system. The theoretical and experimental progress is d…

hep-ph2024

NNLO QCD corrections to $Δ Γ_{s}$ in the $B_{s} - B_{s}$ 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 $Δ Γ_{s}$ in the $B_{s} - B_{s}$ system. The inclusion of the e…

Next-to-next-to-leading QCD corrections to the B+-Bd0​, D+-D0, and Ds+​-D0 lifetime ratios

Complete next-to-next-to-leading order QCD corrections to the decay matrix in B-meson mixing at leading power

Current-current operator contribution to the decay matrix in B-meson mixing at next-to-next-to-leading order of QCD

Kaon Physics: A Cornerstone for Future Discoveries

Update on technical aspects of B meson mixing at NNLO

B meson mixing at NNLO: technical aspects

Summary of Working Group 4: Mixing and mixing-related CP violation in the B system: Δm, ΔΓ, ϕs​, ϕ1​/α, ϕ2​/β, ϕ3​/γ

NNLO QCD corrections to ΔΓs​ in the Bs​−Bs​ system

Next-to-next-to-leading QCD corrections to the $B^{+}$ - $B_{d}^{0}$ , $D^{+}$ - $D^{0}$ , and $D_{s}^{+}$ - $D^{0}$ lifetime ratios

Complete next-to-next-to-leading order QCD corrections to the decay matrix in $B$ -meson mixing at leading power

Current-current operator contribution to the decay matrix in $B$ -meson mixing at next-to-next-to-leading order of QCD

Update on technical aspects of $B$ meson mixing at NNLO

$B$ meson mixing at NNLO: technical aspects

Summary of Working Group 4: Mixing and mixing-related $C P$ violation in the B system: $Δ m$ , $ΔΓ$ , $ϕ_{s}$ , $ϕ_{1} / α$ , $ϕ_{2} / β$ , $ϕ_{3} / γ$

NNLO QCD corrections to $Δ Γ_{s}$ in the $B_{s} - B_{s}$ system