14 papers
QCD corrections to charged-current decays with Heavy Sterile Neutrinos in initial or final state and their impact on decays
Tim Kretz, Ulrich Nierste
Searches for a Heavy Sterile Neutrino profit from precise predictions of inclusive decay rates, entering predictions for branching fractions and lifetime. Once decay channels i…
Next-to-next-to-leading QCD corrections to the -, -, and - 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 and , where denotes the heavy quar…
Decay matrix of B-\bar{B} mixing: Mixing of dimension-seven operators into dimension-six operators under renormalization
Artyom Hovhannisyan, Ulrich Nierste
The precise measurement of the width difference ÎÎ_s among the mass eigenstates of the B_s-\bar{B}_s system requires the calculation of the corresponding decay matrix to order α…
TeV-scale scalar leptoquarks motivated by B anomalies improve Yukawa unification in SO(10) GUT
Xiyuan Gao, Ulrich Nierste
It is common practice to explain deviations between data and Standard-Model (SM) predictions by postulating new particles at the TeV scale ad-hoc. This approach becomes much more c…
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…
CP Violation in Charmed Meson Decays into Final States with
Carolina Bolognani, Ulrich Nierste, Stefan Schacht +1
We derive Standard Model predictions for the CP asymmetries of singly-Cabibbo suppressed decays, where . Our predictions are based on the approximate SU…