S. Schacht

activity

20242026

collaborators

6 papers

hep-ph2026

$B ˉ \to D^{(*)} ℓ I^ˉ ½$ Branching Ratios and Evidence for Isospin Breaking in $I^¥ (4 S)$ Decays

Martin Jung, Stefan Schacht

We introduce a new method for the determination of the ratio of production fractions $R^{\pm 0} = B (I^¥ (4 S) \to B^{+} B^{-}) / B (I^¥ (4 S) \to B^{0} B ˉ^{0})$ based on $\bar B\to D…

hep-ph2025

CP Violation in Charmed Meson Decays into Final States with $η^{'}$

Carolina Bolognani, Ulrich Nierste, Stefan Schacht +1

We derive Standard Model predictions for the CP asymmetries of singly-Cabibbo suppressed $D \to P η^{'}$ decays, where $P = K, π, η$ . Our predictions are based on the approximate SU…

hep-ph2025

Anatomy of Non-Leptonic Two-Body Decays of Charmed Mesons into Final States with $I^\cdot^{'}$

Carolina Bolognani, Ulrich Nierste, Stefan Schacht +1

We show that $D \to P I^\cdot^{'}$ decay amplitudes, where $P = K, I ¨ , I^\cdot$ , cannot be simply related to their $D \to P I^\cdot$ counterparts with a single $I^\cdot_{0}$ -- $I^\cdot_{8}$ mixing an…

hep-ph2025

$B ˉ \to D ˉ D$ Decays and the Extraction of $f_{d} / f_{u}$ at Hadron Colliders

Jonathan Davies, Martin Jung, Stefan Schacht

We perform a detailed model-independent phenomenological analysis of $B ˉ \to D ˉ D$ decays. Employing an SU(3) $_{F}$ analysis including symmetry-breaking contributions together…

hep-ph2024

Reappraisal of SU(3)-flavor breaking in $B \to D P$

Jonathan Davies, Stefan Schacht, Nicola Skidmore +1

In light of recently found deviations of the experimental data from predictions from QCD factorization for $B_{(s)} \to D_{(s)} P$ decays, where $P = {I ¨ , K}$ , we systematical…

hep-ph2024

Charm CP violation and searches

Stefan Schacht

Charm CP violation is a unique gate to the physics of up-type quarks and allows searches for physics beyond the Standard Model in new and exciting ways, complementary to kaon and $…

Bˉ→D(∗)ℓI^ˉ½ Branching Ratios and Evidence for Isospin Breaking in I^¥(4S) Decays

CP Violation in Charmed Meson Decays into Final States with η′

Anatomy of Non-Leptonic Two-Body Decays of Charmed Mesons into Final States with I^⋅′

Bˉ→DˉD Decays and the Extraction of fd​/fu​ at Hadron Colliders

Reappraisal of SU(3)-flavor breaking in B→DP

Charm CP violation and searches

$B ˉ \to D^{(*)} ℓ I^ˉ ½$ Branching Ratios and Evidence for Isospin Breaking in $I^¥ (4 S)$ Decays

CP Violation in Charmed Meson Decays into Final States with $η^{'}$

Anatomy of Non-Leptonic Two-Body Decays of Charmed Mesons into Final States with $I^\cdot^{'}$

$B ˉ \to D ˉ D$ Decays and the Extraction of $f_{d} / f_{u}$ at Hadron Colliders

Reappraisal of SU(3)-flavor breaking in $B \to D P$