L. Gärtner

collaborators

2 papers

hep-ex2026

Joint LHCb--Belle II Prospects to Constrain New Physics in $B \to D^{(*)} τ ν$

Johannes Albrecht, Florian Bernlochner, Marco Colonna +5

Semileptonic $b \to c τ ν ˉ_{τ}$ decays are powerful probes of non-Standard-Model effects within an effective-field-theory (EFT) framework, but fully exploiting them in current and fu…

hep-ph2026

Constraints on invisible $B^{+} \to K^{+} X$ decays from the Belle II $B^{+} \to K^{+} ν ν ˉ$ measurement

Lorenz Gärtner, Nikolai Krug, Thomas Kuhr +3

The Belle II measurement of the branching fraction for $B^{+} \to K^{+} ν ν ˉ$ shows a $2.7 σ$ excess over the Standard Model prediction and motivates new-physics explanations such as…

Joint LHCb--Belle II Prospects to Constrain New Physics in B→D(∗)τν

Constraints on invisible B+→K+X decays from the Belle II B+→K+ννˉ measurement

Joint LHCb--Belle II Prospects to Constrain New Physics in $B \to D^{(*)} τ ν$

Constraints on invisible $B^{+} \to K^{+} X$ decays from the Belle II $B^{+} \to K^{+} ν ν ˉ$ measurement