A5062625235- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Black Holes and Theoretical Physics
- Computational Physics and Python Applications
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Distributed and Parallel Computing Systems
- Particle Detector Development and Performance
- Superconducting Materials and Applications
- Complex Systems and Time Series Analysis
- International Science and Diplomacy
- Scientific Research and Discoveries
- Nuclear Physics and Applications
- Nonlinear Dynamics and Pattern Formation
- Particle Accelerators and Free-Electron Lasers
- Nuclear physics research studies
- Electromagnetic Simulation and Numerical Methods
- Atomic and Subatomic Physics Research
- Radio Astronomy Observations and Technology
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum and electron transport phenomena
- Model Reduction and Neural Networks
- Medical Imaging Techniques and Applications
Roma Tre University
2016-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tre
2009-2025
European Organization for Nuclear Research
1998-2022
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2002-2006
University of Padua
1993-2002
Istituto Nazionale di Fisica Nucleare, Sezione di Padova
1995-2002
Max Planck Institute for Physics
1997
New York University
1988-1993
Leibniz University Hannover
1991
A bstract We present the first complete next-to-next-to-leading order analysis of Standard Model Higgs potential. computed two-loop QCD and Yukawa corrections to relation between quartic coupling ( λ ) mass M h ), reducing theoretical uncertainty in determination critical value for vacuum stability 1 GeV. While at Planck scale is remarkably close zero, absolute potential excluded 98 % C.L. < 126 Possible consequences near vanishing scale, including speculations about role field during...
A bstract We extract from data the parameters of Higgs potential, top Yukawa coupling and electroweak gauge couplings with full 2-loop NNLO precision, we extrapolate SM up to large energies 3-loop RGE precision. Then study phase diagram Standard Model in terms high-energy parameters, finding that measured mass roughly corresponds minimum values quartic maximum value allowed by vacuum metastability. discuss various theoretical interpretations near-criticality mass.
This Report summarizes the results of activities in 2012 and first half 2013 LHC Higgs Cross Section Working Group. The main goal working group was to present state art Physics at LHC, integrating all new that have appeared last few years. report follows Handbook Sections: 1. Inclusive Observables (CERN-2011-002) second 2. Differential Distributions (CERN-2012-002). After discovery a boson mid-2012 this focuses on refined prediction Standard Model (SM) phenomenology around experimentally...
We compute the electroweak corrections due to light fermions production cross section $\sigma(g g \to H)$ and partial decay widths $\Gamma (H \gamma \gamma)$ g)$. present analytic results for these that are expressed in terms of Generalized Harmonic Polylogarithms. find gluon fusion width g)$ large Higgs mass region below 160 GeV where they reach up 9% lowest order term. For above can $-$10%
We consider the gluon fusion production cross section of a scalar Higgs boson at NLO QCD in SM and MSSM. implement calculation POWHEG approach, match NLO-QCD results with PYTHIA HERWIG parton showers. discuss few representative scenarios MSSM parameter spaces, emphasis on fermion squark mass effects distributions.
We compute the two-loop BSM contributions to $h\longrightarrow \gamma\gamma$ decay width in SM extended with a real triplet of $SU(2)$. consider scenarios which neutral components doublet and do not mix, so that lighter scalar $h$ has (at least approximately) SM-like couplings fermions gauge bosons. focus on corrections controlled by quartic couplings, obtain explicit compact formulas for $h \gamma \gamma$ amplitude means low-energy theorem connects it derivative photon self-energy w.r.t....
We employ an effective Lagrangian approach to derive the leading-logarithm two-loop electroweak contributions muon anomalous magnetic moment, a_mu. show that these corrections can be obtained using known results on dimensions of composite operators. confirm result Czarnecki et al. for bosonic part and present complete sin^2 \theta_W dependence fermionic contribution. The is then used compute three-loop contribution Finally we derive, in a fairly model-independent way, QED improvement...
The pinch technique (PT) is applied to obtain one-loop gauge-invariant self-energies, vertex and box diagrams in the electroweak sector of standard model. Describing interaction vector bosons with fermions terms current correlation functions, we propose directly identify parts contributions equal-time commutators relevant Ward identities. We argue that this procedure isolates are independent strong dynamics. formalism promptly leads us very simple transverse as well four-fermion processes...
We propose a method to determine the trilinear Higgs self coupling that is alternative direct measurement of pair production total cross sections and differential distributions. The relies on effects electroweak loops featuring an anomalous would imprint single at LHC. first calculate these contributions all phenomenologically relevant (ggF, VBF, WH, ZH, $$ t\overline{t}H ) decay \left(\gamma \gamma, W{W}^{\ast }/Z{Z}^{\ast}\to\ 4f,b\overline{b},\tau \tau \right) modes LHC then estimate...
Abstract Predictions for the Higgs masses are a distinctive feature of supersymmetric extensions Standard Model, where they play crucial role in constraining parameter space. The discovery boson and remarkably precise measurement its mass at LHC have spurred new efforts aimed improving accuracy theoretical predictions models. “ Precision SUSY Mass Calculation Initiative ” (KUTS) was launched 2014 to provide forum discussions between different groups involved these efforts. This report aims...
This Report summarises the results of second year's activities LHC Higgs Cross Section Working Group. The main goal working group was to present state art Physics at LHC, integrating all new that have appeared in last few years. first report Handbook Sections: 1. Inclusive Observables (CERN-2011-002) focuses on predictions (central values and errors) for total production cross sections branching ratios Standard Model its minimal supersymmetric extension, covering also related issues such as...