A5047466984- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Particle Accelerators and Free-Electron Lasers
- Medical Imaging Techniques and Applications
- Radiation Therapy and Dosimetry
- Atomic and Subatomic Physics Research
- Computational Physics and Python Applications
- Black Holes and Theoretical Physics
- Superconducting Materials and Applications
- Advanced Radiotherapy Techniques
- Radiation Effects in Electronics
- Nuclear Physics and Applications
- Nuclear physics research studies
- Muon and positron interactions and applications
- Astrophysics and Cosmic Phenomena
- Stochastic processes and statistical mechanics
- Particle accelerators and beam dynamics
- Boron Compounds in Chemistry
- Radiomics and Machine Learning in Medical Imaging
- Atomic and Molecular Physics
Sapienza University of Rome
2011-2024
Istituto Nazionale di Fisica Nucleare
2015-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
2010-2024
University of Pisa
2009-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2014-2023
Istituto Nazionale di Fisica Nucleare, Sezione di Lecce
2018-2022
University of Salento
2018-2022
The University of Tokyo
2021
Paul Scherrer Institute
2010-2021
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2012-2021
The final results of the search for lepton flavour violating decay $$\mathrm {\mu }^+ \rightarrow \mathrm {e}^+ {\gamma }$$ based on full dataset collected by MEG experiment at Paul Scherrer Institut in period 2009–2013 and totalling $$7.5\times 10^{14}$$ stopped muons target are presented. No significant excess events is observed with respect to expected background a new upper limit branching ratio this $$ \mathcal{B} (\mu ^+ \mathrm{e}^+ \gamma ) < 4.2 \times 10^{-13}$$ (90 % confidence...
The analysis of a combined data set, totaling 3.6 × 10(14) stopped muons on target, in the search for lepton flavor violating decay μ(+) → e(+)γ is presented. collected by MEG experiment at Paul Scherrer Institut show no excess events compared to background expectations and yield new upper limit branching ratio this 5.7 10(-13) (90% confidence level). This represents four times more stringent than previous world best set MEG.
The MEG experiment, designed to search for the mu+->e+ gamma decay at a 10^-13 sensitivity level, completed data taking in 2013. In order increase reach of experiment by an magnitude level 6 x 10-14 branching ratio, total upgrade, involving substantial changes has been undertaken, known as II. We present both motivation upgrade and detailed overview design expected detector performance.
We present a new result based on an analysis of the data collected by MEG detector at Paul Scherrer Institut in 2009 and 2010, search lepton-flavor-violating decay μ+→e+γ. The likelihood combined sample, which corresponds to total 1.8×1014 muon decays, gives 90% C.L. upper limit 2.4×10−12 branching ratio μ+→e+γ decay, constituting most stringent existence this date.Received 31 July 2011DOI:https://doi.org/10.1103/PhysRevLett.107.171801© 2011 American Physical Society
Abstract The MEG II experiment, based at the Paul Scherrer Institut in Switzerland, reports result of a search for decay $$\upmu ^+ \rightarrow {\textrm{e}}^+ \upgamma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msup> <mml:mi>μ</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:mo>→</mml:mo> <mml:mtext>e</mml:mtext> </mml:mrow> <mml:mi>γ</mml:mi> </mml:math> from data taken first physics run 2021. No excess events over expected background is observed, yielding an...
This article reports world averages for measurements of b-hadron and c-hadron properties obtained by the Heavy Flavor Averaging Group (HFAG) using results available at end 2007. For averaging, common input parameters used in various analyses are adjusted (rescaled) to values, known correlations taken into account. The include branching fractions, lifetimes, neutral meson mixing parameters, CP violation semileptonic decays.
The MEG (Mu to Electron Gamma) experiment has been running at the Paul Scherrer Institut (PSI), Switzerland since 2008 search for decay μ +→e+ γ by using one of most intense continuous + beams in world. This paper presents components: positron spectrometer, including a thin target, superconducting magnet, set drift chambers measuring muon vertex and momentum, timing counter time, liquid xenon detector photon energy, position time. trigger system, read-out electronics data acquisition system...
Abstract The workshop “Shedding light on X17” brings together scientists looking for the existence of a possible new particle, often referred to as X17. This hypothetical particle can explain resonant structure observed at $$\sim $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mo>∼</mml:mo> </mml:math> 17 MeV in invariant mass electron-positron pairs, produced after excitation nuclei such $$^8\hbox {Be}$$ <mml:mrow> <mml:msup> <mml:mrow /> <mml:mn>8</mml:mn> </mml:msup>...
Abstract The MEG II experiment, located at the Paul Scherrer Institut (PSI) in Switzerland, is successor to which completed data taking 2013. started fully operational 2021, with goal of improving sensitivity $$\upmu ^+ \rightarrow {\textrm{e}}^+ \upgamma $$ <mml:math...
The radiation used in hadrontherapy treatments interacts with the patient body producing secondary particles, either neutral or charged, that can be for dose and Bragg peak monitoring to provide a fast feedback on treatment plans. Recent results obtained from authors simplified setups (mono-energetic primary beams interacting homogeneous tissue-like target) have already indicated correlation exists between flux of these secondaries coming target (e.g. protons photons) position beam peak. In...
A novel radio guided surgery (RGS) technique for cerebral tumors using $\beta^{-}$ radiation is being developed. Checking the availability of a radio-tracer that can deliver emitter to tumor fundamental step in deployment such technique. This paper reports study uptake 90Y labeled (DOTATOC) meningioma and high grade glioma (HGG) feasibility RGS these cases.
The background induced by the high penetration power of radiation is main limiting factor current radio-guided surgery (RGS). To partially mitigate it, a RGS with β(+)-emitting radio-tracers has been suggested in literature. Here we propose use β(-)-emitting and β(-) probes discuss advantage this method respect to previously explored ones: electron low allows for simple versatile could extend tumours which originating from nearby healthy tissue makes less effective. We developed probe...
The MEG experiment took data at the Paul Scherrer Institute in years 2009–2013 to test violation of lepton flavor conservation law, which originates from an accidental symmetry that Standard Model elementary particle physics has, and published most stringent limit on charged violating decay μ+→e+γ: BR(μ+→e+γ) <4.2×10−13 90% confidence level. detector has been upgraded order reach a sensitivity 6×10−14. basic principle II is achieve highest possible using full muon beam intensity (7×107...
Abstract The cylindrical drift chamber is the most innovative part of MEG II detector, upgraded version experiment. differs from one because it a single volume structure, instead segmented one, chosen to improve its resolutions and efficiency in detecting low energy positrons muon decays at rest. In this paper, we show characteristics performances fundamental apparatus discuss impact higher resolution on sensitivity Because structure high quality will be cornerstone development an ideal...
The electric dipole moments~(EDM) of fundamental particles inherently violate parity~(P) and time-reversal~(T) symmetries. By virtue the CPT theorem in quantum field theory, latter also implies violation combined charge-conjugation parity~(CP) symmetry. We aim to measure EDM muon using frozen-spin technique within a compact storage trap. This method exploits high effective field, \$E \approx 165\$ MV/m, experienced rest frame with momentum about 23 MeV/c when it passes through solenoidal...
Organic scintillators are often chosen as radiation detectors for their fast decay time and low Z, while inorganic ones used when high light yields required. In this paper we show that a para-terphenyl based detector has blend of properties the two categories can be optimal energy position measurements low-energy charged particles. Using 0.1% diphenylbutadiene doped samples measured attenuation length λ = 4.73 ±0.06 mm, quenching factor α particles Q <sub...
This letter of intent proposes an experiment to search for electric dipole moment the muon based on frozen-spin technique. We intend exploit high field, $E=1{\rm GV/m}$, experienced in rest frame with a momentum $p=125 {\rm MeV/}c$ when passing through large magnetic field $|\vec{B}|=3{\rm T}$. Current fluxes at $μ$E1 beam line permit improved sensitivity $σ(d_μ)\leq 6\times10^{-23}e{\rm cm}$, about three orders magnitude more than current upper limit $|d_μ|\leq1.8\times10^{-19}e{\rm...
Charged particle beams are used in therapy (PT) to treat oncological patients due their selective dose deposition tissues with respect the photons and electrons conventional radiotherapy. Heavy (Z > 1) PT can additionally be exploited for high biological effectiveness killing cancer cells. Nowadays, protons carbon ions clinical routines. Recently, interest potential application of helium oxygen has been growing. With protons, such characterized by reduced multiple scattering inside body,...
Spread through air spaces (STAS) has been reported as a negative prognostic factor in patients with lung cancer undergoing sublobar resection. Radiomics recently proposed to predict STAS using preoperative computed tomography (CT). However, limitations of previous studies included the strict selection imaging acquisition protocols, leading results hardly applicable daily clinical practice. The aim this study is test radiomics-based prediction model practice-based dataset.A training cohort 99...