Tag Archives: Evento scientifico

Speaker: Haoyu Shi (IHEP) The discovery of the Higgs boson at the LHC in 2012 completed the Standard Model, yet precision measurements of its couplings and the electroweak sector are essential to reveal physics beyond it. The Circular Electron-Positron Collider (CEPC), a proposed next-generation Higgs factory, is designed to operate at a centre-of-mass energy of 240 GeV with a peak luminosity of $10^34 cm^{-2}~s^{-1}$, producing millions of Higgs bosons over its operation. The facility will also serve as a Z -boson factory and, in subsequent stages, explore higher energy frontiers. In this talk, I will present the baseline designs of the CEPC accelerator and reference detector—based on the Technical Design Reports published in 2023 and 2025, respectively —with particular emphasis on the machine–detector interface and integration challenges.

Speaker: Fernando Arias Aragón (LPSC, CNRS) Neutron stars are very dense media in which axions may be produced. Such a link leads to stringent limits on the axion characteristic energy scale by imposing restrictions on the neutron star cooling. In this presentation, I will show our current study on the dependence of this limit with respect to the particle composition of the neutron star core. We will do so by recalculating the limits on KSVZ and DFSZ axions using equations of state that assume different particles to be present within the neutron star.

Speaker: Claudio Emma (SLAC National Accelerator Laboratory) High intensity relativistic electron beams are among the most versatile and powerful probes of the natural world.Progress in our understanding of the fundamental forces of nature, as well as the structure of matter, has gone hand in hand with improvements to beam brightness, intensity and control. Next generation experiments will require beams with unprecedented properties: bunch lengths of 10s – 100s of nm, peak currents in the Mega Ampere scale and peak electric fields exceeding 1 V/angstrom. These experiments will push the boundaries of our understanding in areas ranging from high energy physics, strong field quantum electrodynamics, laboratory astrophysics, ultrafast photochemistry and material science. Furthermore, ultrashort, ultrahigh current electron beams are envisioned as drivers for future light sources, advanced particle accelerators and laserless gamma-gamma colliders. In this talk I will report on progress towards generating such extreme beams at the FACET-II facility at SLAC National Accelerator Laboratory. I will highlight recent experimental work conducted at the FACET-II Facility which generated the first 100 kA peak current, petawatt peak power electron bunches in a particle accelerator [1]. I will also outline a planned experimental campaign dedicated to increasing the peak current further from this result by an order of magnitude using plasma-based electron beam compression [2]. Finally, I will discuss relevant applications of these beams focusing on driving advanced attosecond X-ray sources with high peak power and broad tunability [3-4]. [1] C. Emma, N. Majernik, K. Swanson et al., PRL 134, 085001 (2025) [2] …

Speaker: Fabio Sciarrino (Dipartimento di fisica) Quantum computing harnesses the law of quantum mechanics to perform information processing in ways unattainable by classical devices. This colloquium surveys the current state of quantum computing, discussing leading hardware platforms (superconducting qubits, trapped ions, neutral atoms, and photonics) and recent milestones in scale, coherence, and algorithmic benchmarks. I will highlight integrated quantum photonics – on‑chip sources, reconfigurable interferometers and detectors – discussing its advantages and engineering challenges for scalable processors. The talk also reviews algorithmic progress (quantum simulation, variational methods), error‑mitigation and verification techniques, and key obstacles to fault tolerance: scalable connectivity, practical error correction, and robust quantum‑classical interfaces. Finally, I outline hardware‑software co‑design strategies and emerging hybrid architectures, offering an outlook on research priorities and opportunities for new contributors.

The XXII LNF Spring School “Bruno Touschek” in Nuclear, Subnuclear and Astroparticle Physics will take place at the INFN, Laboratori Nazionali di Frascati, Italy from Monday, May 11th to Friday, May 15th, 2026. The School is addressed to graduate students and young post-doctoral fellows in theoretical and experimental high-energy, nuclear and astroparticle physics. The 2026 edition of the School includes lectures on selected theoretical and experimental topics, discussion sessions, a colloquium and the 9th Young Researchers’ Workshop on “Challenges in high-energy, nuclear and astroparticle physics”, scheduled on Monday, May 11th and on Wednesday, May 13th. Students and postdocs planning to participate in the School are strongly encouraged to apply to give a presentation of their research in the workshop, by sending an email to the school chair, with the proposed talk title. The contributions will be published in Frascati Physics Series. The registration fee is 150 euros and covers lunches at the LNF canteen, coffee breaks, social dinner and excursion. Some funding covering the registration fee is available for participants giving talks in the Young Researchers’ Workshop.

Speaker: Simone Manti (Istituto Nazionale di Fisica Nucleare) VOXES is a high-resolution X-ray spectrometer developed at the INFN Laboratori Nazionali di Frascati for X-ray spectroscopy measurements in the 5 to 50 keV energy range, with applications to both X-ray fluorescence and absorption studies. Based on the Von Hamos geometry, the setup is designed to provide a few-eV energy resolution (FWHM), depending on the adopted crystal, detector, and measurement conditions. One of the distinctive features of VOXES is its capability to perform high-resolution measurements also on extended sources, enabled by the combined use of crystal dispersion and slit-based source shaping. In this talk, after introducing the main characteristics of the spectrometer, I will show how these features make VOXES a flexible platform for a broad range of applications. The setup includes mosaic and germanium crystals, strip, CCD, and pixel detectors, and X-ray tubes with Mo and W anodes operating up to 80 kV and currents of the order of mA. The system is installed in a dedicated shielded bunker, suitable for experimental integration and further developments. The spectrometer is fully motorized for alignment procedures and complemented by auxiliary diagnostics, including a pin diode for monitoring, ensuring operational flexibility and reproducibility. On this basis, I will discuss selected application areas that illustrate the scientific and technological relevance of VOXES for LNF activities. These include measurements on liquid samples for edible-liquid analysis within the MITIQO project, measurements on perovskite detectors, imaging with the GEM detector, and ongoing activities in collaboration with ENEA on …

Speaker: Giacomo Santoni (Istituto Nazionale di Fisica Nucleare) Twist-2 operators are fundamental for the study of deep inelastic scattering in QCD because they dominate the operator product expansions on the light-cone. Recently, it was discovered that the Euclidean UV-asymptotic generating functional of the connected correlators of twist-2 operators provides highly nontrivial constraints on the yetto-come nonperturbative solution of large-N SU(N) YM theory. We extend these results to N=1 supersymmetric Yang-Mills (SYM) theory by providing a new construction of twist-2 operators in terms of covariant superfields. This construction is manifestly gauge-invariant and SUSY-covariant and makes their one-loop renormalization and mixing properties considerably transparent. We compute their asymptotic renormalization-group improved generating functional in Euclidean superspace and its planar and leading nonplanar large-N expansion. We verify that the leading nonplanar asymptotic renormalization-group improved generating functional matches the structure of logarithm of a functional superdeterminant of the corresponding nonperturbative object arising from the glueball/gluinoball effective action, which it should be asymptotic to at short distances because of the asymptotic freedom.

Speaker: Krzysztof Mekala (University of Warsaw) Among proposed future projects for particle physics, the Muon Collider has recently attracted significant attention. By combining features of both electron–positron and hadron machines, it offers a potentially powerful environment for exploring high-energy interactions. While technological challenges remain, recent studies suggest none are fundamentally prohibitive, motivating continued research in this direction. In this talk, I will briefly introduce the Muon Collider in the context of the Update of the European Strategy for Particle Physics and outline the physics opportunities it could offer. I will focus in particular on studies of electroweak interactions at previously unexplored energy scales. After discussing the role of vector boson fusion in this regime, I will review the ideas of the collinear approximation and electroweak factorisation. Finally, I will present the emerging framework of Electroweak Parton Distribution Functions and discuss their relevance for describing high-energy processes.  

Speaker: Yury Cherepennikov Based on own experience, this seminar presents a summary of research activities conducted by the author within International collaborations since 2012 in the field of applied X-ray optics and imaging, followed by the discussion on prospective research directions at LNF. The presentation addresses the development of compact accelerator-based X-ray sources and advanced X-ray optical systems, such as adaptive crystal monochromators controlled by external stimuli and polycapillary optics for the generation of high-intensity monochromatic radiation. Their implementation in applied X-ray imaging and analytical techniques for industrial applications is discussed. Particular attention is given to the use of polycapillary optics in advanced imaging systems and to the integration of 3D printing technologies for the fabrication of customized components for radiation imaging and radiation therapy setups.

This one‑afternoon workshop brings together researchers working at the interface of axion physics and Lattice QCD. Owing to the recent developments, predictions for the axion mass have been significantly improved and the role of cosmological aspects clarified. Particular attention will be devoted to topology, θ‑dependence, topological susceptibility, and onto the possibility of recent lattice advances to further sharpening predictions in these areas. Moreover, the workshop will address the recent challenge posed by a proposed GeV‑scale axion scenario in which the up‑quark mass arises dynamically from the QCD condensate, implying that the axion could be hidden among known pseudoscalar resonances. Resolving this question conclusively will require dedicated lattice studies of the corresponding deformed QCD theory. The workshop aims to highlight recent progress, clarify open problems, and identify opportunities for new breakthroughs at the intersection of axion theory and Lattice QCD. This activity is part of the Theoretical Phenomenology Visiting Institute @ LNF, running from 23 to 27 March 2026 and from 7 to 10 April 2026, and supported by CSN4 to promote the participation of early-career scientists.