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Your search keyword '"Pasquali, A"' showing total 371 results
Start Over Author "Pasquali, A" Publication Type Conference Materials
371 results on '"Pasquali, A"'

24. Measurements With A Quantum Vision Transformer: A Naive Approach.

Author

Pasquali, Dominic, Grossi, Michele, and Vallecorsa, Sofia

Subjects
MACHINE learning, PARTICLE physics, IMAGE recognition (Computer vision), QUANTUM computing, TRANSFORMER models
Abstract

In mainstream machine learning, transformers are gaining widespread usage. As Vision Transformers rise in popularity in computer vision, they now aim to tackle a wide variety of machine learning applications. In particular, transformers for High Energy Physics (HEP) experiments continue to be investigated for tasks including jet tagging, particle reconstruction, and pile-up mitigation. An improved Quantum Vision Transformer (QViT) with a quantum-enhanced self-attention mechanism is introduced and discussed. A shallow circuit is proposed for each component of self-attention to leverage current Noisy Intermediate Scale Quantum (NISQ) devices. Variations of the hybrid architecture/model are explored and analyzed. The results demonstrate a successful proof of concept for the QViT, and establish a competitive performance benchmark for the proposed design and implementation. The findings also provide strong motivation to experiment with different architectures, hyperparameters, and datasets, setting the stage for implementation in HEP environments where transformers are increasingly used in state of the art machine learning solutions. [ABSTRACT FROM AUTHOR]

Published
2024
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41. Study of highly excited states in 16O with 3He+13C reactions at low energies.

Author

Lombardo, Ivano, Dell'Aquila, Daniele, Vigilante, Mariano, Aytekin, Mualla, Redigolo, Luigi, Baldesi, Lucia, Barlini, Sandro, Camaiani, Alberto, Casini, Giovanni, Ciampi, Caterina, Cicerchia, Magda, Fabris, Daniela, Frosin, Catalin, Gramegna, Fabiana, Marchi, Tommaso, Ordine, Antonio, Ottanelli, Pietro, Pasquali, Gabriele, Piantelli, Silvia, and Russo, Marco

Subjects
EXCITATION (Physiology), RESONANCE, ANGULAR distribution (Nuclear physics), NERVOUS system, KINEMATICS
Abstract

We report some preliminary experimental results on 13C(3He,α)12C reactions at low bombarding energies, in the range 1.4 – 2.2 MeV. The reconstruction of kinematic quantities in the final channel was performed by using a high-performance, low-threshold hodoscope, allowing for the particle identification even for low energy ejectiles. We succeeded in measuring detailed angular distributions, in absolute values, even for the transition leading to the emission of 12C in the Hoyle state, then resulting into 4 α particles in the final channel. The analysis of angular distributions as a function of energy suggests the occurrence of two low-spin resonant states, respectively with Jπ = 1− and 2+, at excitation energies of ≈ 24.1 and 24.5 MeV. [ABSTRACT FROM AUTHOR]

Published
2024
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