Hector Gisbert

activity

20202025

c \to u ν ν ˉ

dineutrino null tests for

e^{+} e^{-}

-machines

41 citations · 112 across the 10 of their papers we have counts for

collaborators

10 papers

hep-ph2025

BSM reach of rare charm decays, including the rising star $Λ_{c} \to p μ^{+} μ^{-}$

Hector Gisbert, Gudrun Hiller, Dominik Suelmann

We perform the first global fit of rare charm transitions using recent data on $D^{0} \to μ^{+} μ^{-}$ , $D^{+} \to π^{+} μ^{+} μ^{-}$ , $Λ_{c} \to p μ^{+} μ^{-}$ and $D^{0} \to π^{+} π^{-} μ^{+} μ^{-}$ decays, including angul…

hep-ph2024★ 11 cited

Effective field theory analysis of rare $∣Δ c ∣ = ∣Δ u ∣ = 1$ charm decays

Hector Gisbert, Gudrun Hiller, Dominik Suelmann

We perform a global analysis of $∣Δ c ∣ = ∣Δ u ∣ = 1$ transitions using recent data on $D^{0} \to μ^{+} μ^{-}$ , $D^{+} \to π^{+} μ^{+} μ^{-}$ , $Λ_{c} \to p μ^{+} μ^{-}$ , and $D^{0} \to π^{+} π^{-} μ^{+} μ^{-}$ decays…

hep-ph2024

Constraints on baryon-number-violating top-quark operators in standard model effective field theory

Hector Gisbert, Antonio Rodríguez-Sánchez, Luiz Vale Silva

Within the Standard Model Effective Field Theory framework, we set indirect constraints on top quark operators that violate baryon number by one unit above the TeV scale. We find t…

hep-ph2023★ 1 cited

Old and new anomalies in charm

Rigo Bause, Hector Gisbert, Gudrun Hiller +3

The recent LHCb determination of the direct CP asymmetries in the decays $D^{0} \to K^{+} K^{-}, π^{+} π^{-}$ hints at a sizeable breaking of two approximate symmetries of the SM: CP and U-s…

hep-ph2023★ 7 cited

Implications of an enhanced $B \to K ν ν ˉ$ branching ratio

Rigo Bause, Hector Gisbert, Gudrun Hiller

Rare decays mediated by $b \to s ν ν ˉ$ transitions have been reported by the Belle II experiment. The branching ratio of the decay $B^{+} \to K^{+} ν ν ˉ$ is found to be enhanced…

hep-ph2022★ 22 cited

Two is better than one: The U-spin-CP anomaly in charm

Rigo Bause, Hector Gisbert, Gudrun Hiller +3

The recent measurement of the CP-asymmetry in the decay $D \to K^{+} K^{-}$ by LHCb, combined with $Δ A_{CP}$ , evidences a sizable CP-asymmetry in $D \to π^{+} π^{-}$ decays, which r…

hep-ph2022★ 30 cited

Model-independent analysis of $b \to d$ processes

Rigo Bause, Hector Gisbert, Marcel Golz +1

We perform a model-independent analysis of $∣Δ b ∣ = ∣Δ d ∣ = 1$ processes to test the standard model and probe flavor patterns of new physics. Constraints on Wilson coefficients are obtai…

hep-ph2022

The role of dineutrino modes in the search for new physics

Hector Gisbert

Dineutrino modes offer promising searches for new physics. The potential aspects of these modes are reviewed in detail. Performing a proper combination of them, novel tests of the…

hep-ph2021

Dineutrino modes probing lepton flavor violation

Rigo Bause, Hector Gisbert, Marcel Golz +1

$S U (2)_{L}$ -invariance links charged dilepton $q ˉ q^{'} ℓ^{+} ℓ^{-}$ and dineutrino $q ˉ q^{'} ν ˉ ν$ couplings. This connection can be established using the…

hep-ph2020★ 41 cited

Rare charm $c \to u ν ν ˉ$ dineutrino null tests for $e^{+} e^{-}$ -machines

Rigo Bause, Hector Gisbert, Marcel Golz +1

Rare $∣Δ c ∣ = ∣Δ u ∣ = 1$ transitions into dineutrinos are strongly GIM-suppressed and constitute excellent null tests of the standard model. While branching ratios of $D \to P ν ν ˉ$ …

BSM reach of rare charm decays, including the rising star Λc​→pμ+μ−

Effective field theory analysis of rare ∣Δc∣=∣Δu∣=1 charm decays

Constraints on baryon-number-violating top-quark operators in standard model effective field theory

Old and new anomalies in charm

Implications of an enhanced B→Kννˉ branching ratio

Two is better than one: The U-spin-CP anomaly in charm

Model-independent analysis of b→d processes

The role of dineutrino modes in the search for new physics

Dineutrino modes probing lepton flavor violation

Rare charm c→uννˉ dineutrino null tests for e+e−-machines

BSM reach of rare charm decays, including the rising star $Λ_{c} \to p μ^{+} μ^{-}$

Effective field theory analysis of rare $∣Δ c ∣ = ∣Δ u ∣ = 1$ charm decays

Implications of an enhanced $B \to K ν ν ˉ$ branching ratio

Model-independent analysis of $b \to d$ processes

Rare charm $c \to u ν ν ˉ$ dineutrino null tests for $e^{+} e^{-}$ -machines