Simone Caletti

A complete list of my papers can be found at INSPIRE-HEP

Selected publications

2025
NNLO QCD predictions for jet observables in ZH production at electron-positron colliders
arXiv:2510.20485 · S. Caletti, A. Gehrmann-De Ridder, M. Marcoli

We present precise predictions for jet observables in ZH production at electron-positron colliders up to NNLO in perturbative QCD. The study considers Higgs boson decays into bottom quarks, charm quarks, and gluons. We highlight differences in differential distributions between these decay modes. The results are relevant for future precision collider experiments.

#NNLO QCD#ZH Production#Jet Observables#Higgs Decay#Lepton Colliders

We present precise predictions for jet observables in ZH production at electron-positron colliders up to NNLO in perturbative QCD. The study considers Higgs boson decays into bottom quarks, charm quarks, and gluons. We highlight differences in differential distributions between these decay modes. The results are relevant for future precision collider experiments.

#NNLO QCD#ZH Production#Jet Observables#Higgs Decay#Lepton Colliders
2024
On heavy-flavour jets with Soft Drop
Eur. Phys. J. C 84 (2024) 212 · S. Caletti, A. Ghira, S. Marzani

We investigate heavy-flavour jets groomed with the Soft Drop algorithm using resummed perturbation theory. We perform analytic calculations for the opening angle and momentum fraction of the splitting. Comparisons with Monte Carlo simulations provide a deeper understanding of these substructure observables. The study also explores correlations between Soft Drop variables and heavy-quark fragmentation functions.

#Heavy-Flavour Jets#Soft Drop#Resummed Perturbation Theory#Jet Substructure#Fragmentation

We investigate heavy-flavour jets groomed with the Soft Drop algorithm using resummed perturbation theory. We perform analytic calculations for the opening angle and momentum fraction of the splitting. Comparisons with Monte Carlo simulations provide a deeper understanding of these substructure observables. The study also explores correlations between Soft Drop variables and heavy-quark fragmentation functions.

#Heavy-Flavour Jets#Soft Drop#Resummed Perturbation Theory#Jet Substructure#Fragmentation
2023
Quantum gradient evaluation through quantum non-demolition measurements
Eur. Phys. J. D 77 (2023) 76 · P. Solinas, S. Caletti, G. Minuto

We propose a protocol based on Quantum Non-Demolition Measurements (QNDM) to estimate cost function derivatives on a quantum computer. This method allows for the direct estimation of derivatives, reducing the number of circuit iterations required. We show that this approach can also decrease the total number of logical gates needed. The results suggest QNDM is a valuable alternative for implementing variational quantum circuits.

#Quantum Computing#Cost Function Derivatives#QNDM#Variational Circuits#Quantum Measurement

We propose a protocol based on Quantum Non-Demolition Measurements (QNDM) to estimate cost function derivatives on a quantum computer. This method allows for the direct estimation of derivatives, reducing the number of circuit iterations required. We show that this approach can also decrease the total number of logical gates needed. The results suggest QNDM is a valuable alternative for implementing variational quantum circuits.

#Quantum Computing#Cost Function Derivatives#QNDM#Variational Circuits#Quantum Measurement
2022
A fragmentation approach to jet flavor
JHEP 10 (2022) 158 · S. Caletti, A.J. Larkoski, S. Marzani, D. Reichelt

We introduce a new definition of partonic jet flavor in the infrared, based on the net flavor along the Winner-Take-All axis. This definition is robust against soft emissions and handles collinear divergences via a perturbative fragmentation function. We solve the associated evolution equations to leading-logarithmic accuracy. The method allows for a theoretically rigorous definition of jet flavor in QCD.

#Jet Flavor#Fragmentation Function#DGLAP Evolution#IRC Safety#QCD

We introduce a new definition of partonic jet flavor in the infrared, based on the net flavor along the Winner-Take-All axis. This definition is robust against soft emissions and handles collinear divergences via a perturbative fragmentation function. We solve the associated evolution equations to leading-logarithmic accuracy. The method allows for a theoretically rigorous definition of jet flavor in QCD.

#Jet Flavor#Fragmentation Function#DGLAP Evolution#IRC Safety#QCD
2022
Practical jet flavour through NNLO
Eur. Phys. J. C 82 (2022) 632 · S. Caletti, A.J. Larkoski, S. Marzani, D. Reichelt

We propose a novel, infrared and collinear safe jet flavour definition applicable at next-to-next-to-leading order (NNLO). The definition relies on the sum of flavours of partons remaining after Soft Drop grooming, reclustered with the anti-kT algorithm. We validate the safety of this prescription using fixed-order numerical codes. This approach enables the use of precise fixed-order calculations for flavoured jet observables.

#Jet Flavor#NNLO#IRC Safety#Soft Drop#Precision QCD

We propose a novel, infrared and collinear safe jet flavour definition applicable at next-to-next-to-leading order (NNLO). The definition relies on the sum of flavours of partons remaining after Soft Drop grooming, reclustered with the anti-kT algorithm. We validate the safety of this prescription using fixed-order numerical codes. This approach enables the use of precise fixed-order calculations for flavoured jet observables.

#Jet Flavor#NNLO#IRC Safety#Soft Drop#Precision QCD
2021
Jet angularities in Z+jet production at the LHC
JHEP 07 (2021) 076 · S. Caletti, O. Fedkevych, S. Marzani, D. Reichelt, S. Schumann, G. Soyez, V. Theeuwes

We perform a phenomenological study of jet angularities in Z+jet production at the LHC. Our predictions combine analytic resummation at NLL accuracy with exact NLO results. We include the effects of soft emissions and non-global logarithms. The results are tailored for comparison with upcoming experimental measurements.

#Jet Angularities#Z+Jet#NLL Resummation#Soft Drop#LHC Phenomenology