arXiv subjects

Martina Ferrillo

Publications and source records attributed to Martina Ferrillo.

3 recordsLinked to original sources

arXiv2023

Improving the potential of BDF@SPS to search for new physics with liquid argon time projection chambers

Beam dump experiments proposed at the SPS are perfectly suited to explore the parameter space of models with long-lived particles, thanks to the combination of a large intensity with a high proton beam energy. In this paper, we study how the exploration power may be augmented further by installing a detector based on liquid argon time projection chamber technology. In particular, we consider several signatures of new physics particles that may be uniquely searched for with such a detector, including double bang events with heavy neutral leptons, inelastic light dark matter, and millicharged particles.

hep-ph↗

arXiv2023

FunTuple: A new N-tuple component for offline data processing at the LHCb experiment

The offline software framework of the LHCb experiment has undergone a significant overhaul to tackle the data processing challenges that will arise in the upcoming Run 3 and Run 4 of the Large Hadron Collider. This paper introduces FunTuple, a novel component developed for offline data processing within the LHCb experiment. This component enables the computation and storage of a diverse range of observables for both reconstructed and simulated events by leveraging on the tools initially developed for the trigger system. This feature is crucial for ensuring consistency between trigger-computed and offline-analysed observables. The component and its tool suite offer users flexibility to customise stored observables, and its reliability is validated through a full-coverage set of rigorous unit tests. This paper comprehensively explores FunTuple's design, interface, interaction with other algorithms, and its role in facilitating offline data processing for the LHCb experiment for the next decade and beyond.

physics.data-an↗

arXiv2020

Probing effects of new physics in $Λ^0_{b}\toΛ^+_{c}μ^{-}\barν_μ$ decays

We present, for the first time, the six-fold differential decay density expression for $Λ^0_b\toΛ^+_{c} l^- \barν_{l}$, taking into account the polarisation of the $Λ^0_b$ baryon and a complete basis of new physics operators. Using the expected yield in the current dataset collected at the LHCb experiment, we present sensitivity studies to determine the experimental precision on the Wilson coefficients of the new physics operators with $Λ^0_{b}\toΛ^+_{c}μ^{-}\barν_μ$ decays in two scenarios. In the first case, unpolarised $Λ^0_{b}\toΛ^+_{c}μ^{-}\barν_μ$ decays with $Λ^+_c\to p K^+ π^-$ are considered, whereas polarised $Λ^0_{b}\toΛ^+_{c}μ^{-}\barν_μ$ decays with $Λ^+_c \to p K^0_S$ are studied in the second. For the latter scenario, the experimental precision that can be achieved on the determination of $Λ^0_b$ polarisation and $Λ^+_c$ weak decay asymmetry parameter is also presented.

hep-ph↗