A5019357887- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Cosmology and Gravitation Theories
- Black Holes and Theoretical Physics
- Computational Physics and Python Applications
- Particle Accelerators and Free-Electron Lasers
- Muon and positron interactions and applications
- Superconducting Materials and Applications
- Rocket and propulsion systems research
- Particle accelerators and beam dynamics
- International Science and Diplomacy
- Pulsars and Gravitational Waves Research
- Business Strategies and Innovation
- Biotechnology and Related Fields
- Astrophysics and Cosmic Phenomena
- Radioactive Decay and Measurement Techniques
- CNS Lymphoma Diagnosis and Treatment
- Medical Imaging Techniques and Applications
- Spacecraft and Cryogenic Technologies
- Quantum, superfluid, helium dynamics
University of Padua
2015-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Padova
2014-2025
Istituto Nazionale di Fisica Nucleare
2024
University of Turin
2024
Scuola Internazionale Superiore di Studi Avanzati
2014
European Organization for Nuclear Research
2012-2013
Technical University of Munich
2008-2011
Universitat de València
2007-2008
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2008
University of Rome Tor Vergata
2005-2008
This chapter of the report "Flavor in era LHC" Workshop discusses theoretical, phenomenological and experimental issues related to flavor phenomena charged lepton sector conserving CP-violating processes. We review current limits main theoretical models for structure fundamental particles. analyze consequences available data, setting constraints on explicit beyond standard model, presenting benchmarks discovery potential forthcoming measurements both at LHC low energy, exploring options...
During 2011 the LHCb experiment at CERN collected 1.0 fb−1 of $\sqrt{s} = 7\mbox{~TeV}$ pp collisions. Due to large heavy quark production cross-sections, these data provide unprecedented samples flavoured hadrons. The first results from have made a significant impact on flavour physics landscape and definitively proved concept dedicated in forward region hadron collider. This document discusses implications measurements classes extensions Standard Model, bearing mind interplay with searches...
Lepton flavor universality (LFU) in $B$ decays is revisited by considering a class of semileptonic operators defined at scale $\mathrm{\ensuremath{\Lambda}}$ above the electroweak $v$. The importance quantum effects, so far neglected literature, emphasized. We construct low-energy effective Lagrangian taking into account running effects from down to $v$ through one-loop renormalization group equations (RGEs) limit exact symmetry and QED RGEs 1 GeV scale. most important turn out be...
Motivated by the first evidence of Bu→τν transition reported Belle [Belle Collaboration, K. Ikado, et al., hep-ex/0604018] and precise ΔMBs measurement CDF [CDF G. Gomez-Ceballos, Talk presented at FPCP 2006, Vancouver, Canada, 9–12 April http://fpcp2006.triumf.ca/; D∅ V. Abazov, hep-ex/0603029], we analyse these other low-energy observables in framework MSSM large tanβ. We show that for heavy squarks A terms (Mq˜, AU≳1 TeV) such scenario has several interesting virtues. It naturally...
The present report documents the results of Working Group 2: B, D and K decays, workshop on Flavor in Era LHC, held at CERN from November 2005 through March 2007. With advent we will be able to probe New Physics (NP) up energy scales almost one order magnitude larger than it has been possible with accelerator facilities. While direct detection new particles main avenue establish presence NP indirect searches provide precious complementary information, since most probably not measure full...
The growing experimental indication of Lepton Flavour Universality Violation (LFUV) both in charged- and neutral-current semileptonic B-decays, has triggered many theoretical interpretations such non-standard phenomena. Focusing on popular scenarios where the explanation these anomalies requires New Physics at TeV scale, we emphasise importance including electroweak corrections to obtain trustable predictions for models question. We find that most important quantum effects are modifications...
Contributions of a spin-0 axionlike particle (ALP) to lepton dipole moments, $g\ensuremath{-}2$ and EDMs are examined. Barr-Zee light-by-light loop effects from light pseudoscalar ALP found be capable resolving the longstanding muon discrepancy at expense relatively large $\mathrm{ALP}\text{\ensuremath{-}}\ensuremath{\gamma}\ensuremath{\gamma}$ couplings. The compatibility such couplings with direct experimental constraints perturbative unitarity bounds is discussed. Future tests scenario...
A bstract We argue that the anomalous magnetic moment of electron ( a e ) can be used to probe new physics. show present bound on new-physics contributions is 8 × 10 −13 , but sensitivity improved by about an order magnitude with measurements and more refined determinations α in atomic-physics experiments. Tests effects play crucial role interpretation observed discrepancy muon μ ). In large class models, moments scale square lepton masses thus anomaly suggests effect (0 . 7 ± 0 2) also...
A bstract We provide a comprehensive model-independent analysis of rare decays involving the b → s transition to put constraints on dimension-six Δ F = 1 effective operators. The are derived from all available up-to-date experimental data B-factories, CDF and LHCb. implications future prospects for observables in sℓ + ℓ − $ s\nu \overline \nu transitions view improved measurements also investigated. present work updates generalises previous studies providing, at same time, useful tool test...
The recent high-precision measurement of the W mass by CDF collaboration is in sharp tension with Standard Model prediction as obtained electroweak fit. If confirmed, this finding can only be explained terms new physics effects. In work, we point out a generic connection between MW anomaly and Higgs observables such h→γγ,Zγ ratio h→ZZ/WW. Moreover, systematically classify scenarios which address via tree-level contribution to Tˆ parameter. These include real scalar triplet, quadruplet same...
We analyze the correlations between electric dipole moments (EDMs) of neutron and heavy atoms CP violation in Bs,d mixing two Higgs doublet models respecting Minimal Flavour Violation hypothesis, with flavour-blind CP-violating (CPV) phases. In particular, we consider case CPV phases from (i) Yukawa interactions (ii) potential. show that both cases upper bounds on above EDMs do not forbid sizable non-standard effects Bs mixing. However, if a large phase will be confirmed, this imply very...
A bstract We investigate the implications of scalar and tensor operators proposed to accommodate hints lepton flavor universality violation in charged-current B -meson decays. show that these scenarios unavoidably induce chirality enhanced contributions charged magnetic moments Yukawa couplings. By using an effective field theory approach we quantify a model independent way connection $$ {R}_{D^{\left(\ast \right)}} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub>...
A bstract We examine the low-energy signatures of axion-like particles (ALPs) in lep- ton flavor violating (LFV) processes. By using a dimension-5 effective Lagrangian, we compute most general ALP contributions to LFV decays leptons and mesons. The provided expressions are valid for any choice mass couplings. explore complementarity different processes, identifying specific patterns be experimentally tested. Constraints on couplings derived from existing data prospects forthcoming...
We point out that heavy new physics contributions in leptonic dipole moments and high-energy cross sections of lepton pairs into Higgs bosons photons are connected model-independently. In particular, we demonstrate a muon collider, running at center-of-mass energies several TeV, can provide unique test the $g\ensuremath{-}2$ through study processes such as ${\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}\ensuremath{\rightarrow}h\ensuremath{\gamma}$. This would be utmost importance...
A bstract We discuss the construction of most general CP-violating chiral Lagrangian for an axion-like particle (ALP). Starting with effective containing light quarks and gluons, we provide its matching onto a at $$ \mathcal{O} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>O</mml:mi> </mml:math> ( p 2 ) described in terms mesons baryons, identifying correspondence between Jarlskog invariants two theories. After deriving ALP interactions analyse few relevant...
The minimal supersymmetric extension of the standard model with large $\mathrm{tan}\ensuremath{\beta}$ and heavy squarks (${M}_{\stackrel{\texttildelow{}}{q}}\ensuremath{\gtrsim}1\text{ }\text{ }\mathrm{TeV}$) is a theoretically well-motivated phenomenologically interesting model. This scenario naturally satisfies all electroweak precision constraints and, in case not too slepton sector (${M}_{\stackrel{\texttildelow{}}{\ensuremath{\ell}}}\ensuremath{\lesssim}0.5\text{ }\mathrm{TeV}$), can...
The recent NA48/2 improvement on R_K=Gamma(K->e nu_e)/Gamma(K->mu nu_mu) emphasizes the role of K_l2 decays in probing mu-e universality. Supersymmetric (SUSY) extensions Standard Model can exhibit non-universal contributions. Their origin is twofold: those deriving from lepton flavor conserving couplings are subdominant with respect to arising violating (LFV) sources. We show that non-universality quite effective constraining relevant regions SUSY models LFV (for instance,...