80 citations · 145 across the 21 of their papers we have counts for
21 papers
Entanglement of momenta at colliders
Marco Fabbrichesi, Roberto Floreanini, Luca Marzola
We investigate the entanglement in the momenta of particle pairs produced at colliders, discarding the information on their spin state. We show how to quantify this entanglement by…
Testing the unitarity of the light neutrino mixing matrix
E. Gabrielli, A. Lind, L. Marzola +2
We propose a novel test of the unitarity of the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) mixing matrix at collider experiments. Our approach exploits the incomplete cancellation betw…
Quantum Entanglement and Bell Nonlocality at Future Lepton Collider
Emidio Gabrielli, Luca Marzola
Quantum entanglement and Bell nonlocality--cornerstones of quantum mechanics--have traditionally been investigated only in low-energy experimental settings. Only recently, these fu…
Measuring CP violation using quantum state tomography
M. Fabbrichesi, R. Floreanini, E. Gabrielli +1
We investigate direct CP violation in neutral meson decays by reconstructing the associated density matrices and measuring their difference using the trace distance. Our results co…
Quantum pions
M. Fabbrichesi, R. Floreanini, E. Gabrielli +1
We show that two- and three-pion states produced in the decay of neutral kaons are contextual, entangled, and Bell nonlocal in isospin space. By reinterpreting the experimental val…
Local vs. nonlocal entanglement in top-quark pairs at the LHC
M. Fabbrichesi, R. Floreanini, L. Marzola
We show that the entanglement observed in top-antitop quark spin states at the LHC is local in the energy region close to the production threshold. In contrast, nonlocal entangleme…
Tests of quantum contextuality in particle physics
M. Fabbrichesi, R. Floreanini, E. Gabrielli +1
Quantum contextuality refers to the impossibility of assigning a predefined, intrinsic value to a physical property of a system independently of the context in which the property i…
Quantum Information meets High-Energy Physics: Input to the update of the European Strategy for Particle Physics
Yoav Afik, Federica Fabbri, Matthew Low +68
Some of the most astonishing and prominent properties of Quantum Mechanics, such as entanglement and Bell nonlocality, have only been studied extensively in dedicated low-energy la…
Quantum contextuality of spin-1 massive particles
M. Fabbrichesi, R. Floreanini, E. Gabrielli +1
Contextuality is a fundamental property of quantum mechanics. Contrary to entanglement, which can only exist in composite systems, contextuality is also present for single entities…
The Linear Collider Facility (LCF) at CERN
H. Abramowicz, E. Adli, F. Alharthi +406
In this paper we outline a proposal for a Linear Collider Facility as the next flagship project for CERN. It offers the opportunity for a timely, cost-effective and staged construc…
About testing Bell locality at colliders
M. Fabbrichesi, R. Floreanini, L. Marzola
High-energy colliders enable the testing of quantum mechanics at its most fundamental level, in the presence of strong and electroweak interactions, with systems that consist of qu…
The trace distance between density matrices, a nifty tool in new-physics searches
Marco Fabbrichesi, Matthew Low, Luca Marzola
Quantum information methods have been brought to bear on high-energy physics, including the study of entanglement and Bell nonlocality in collider experiments. Quantum information…
Entanglement and Bell inequality violation in decays
Emidio Gabrielli, Luca Marzola
The decays of the meson into vector mesons, observed at the LHCb experiment, provide an ideal laboratory to investigate particle physics phenomena with quantum information theo…
Bell inequality is violated in charmonium decays
M. Fabbrichesi, R. Floreanini, E. Gabrielli +1
The experimental data on the helicity amplitudes of charmonium decays allow us to measure entanglement in final state spin correlations and test possible violations of the Bell ine…
Testing the CKM unitarity at high energy via the production at the LHC and future colliders
E. Gabrielli, L. Marzola, K. Müürsepp
We propose a novel test to assess the unitarity of the Cabibbo-Kobayashi-Maskawa matrix, , at present and future collider experiments. Our strategy makes use of the $W…
Quantum tomography with leptons at the FCC-ee
M. Fabbrichesi, L. Marzola
The Future Circular Collider (FCC) -- in its first incarnation as a lepton collider -- will produce, according to the proposed design, more than 100 billion pairs of leptons af…
Explaining the excess via a massless dark photon
E. Gabrielli, L. Marzola, K. Müürsepp +1
The Belle II collaboration has recently observed the rare decay , finding an excess with respect to the Standard Model prediction. We explore the possibility tha…
Quantum entanglement and Bell inequality violation at colliders
Alan J. Barr, Marco Fabbrichesi, Roberto Floreanini +2
The study of entanglement in particle physics has been gathering pace in the past few years. It is a new field that is providing important results about the possibility of detectin…
Dipole momenta and compositeness of the lepton at Belle II
M. Fabbrichesi, L. Marzola
The large number of leptons available at the Belle II experiment makes it possible to study their properties and the extent of their compositeness. Our strategy relies on three…
Probing entanglement and testing Bell inequality violation with at Belle II
Karl Ehatäht, Marco Fabbrichesi, Luca Marzola +1
We present a feasibility study to probe quantum entanglement and Belle inequality violation in the process at a center-of-mass…
Bell inequalities and quantum entanglement in weak gauge bosons production at the LHC and future colliders
M. Fabbrichesi, R. Floreanini, E. Gabrielli +1
Quantum entanglement of weak interaction gauge bosons produced at colliders can be explored by computing the corresponding polarization density matrix. To this end, we consider the…