L. Capriotti
A5091699390- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Black Holes and Theoretical Physics
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Computational Physics and Python Applications
- Particle Accelerators and Free-Electron Lasers
- Medical Imaging Techniques and Applications
- Atomic and Subatomic Physics Research
- Superconducting Materials and Applications
- Nuclear physics research studies
- Stochastic processes and statistical mechanics
- Cosmology and Gravitation Theories
- Distributed and Parallel Computing Systems
- International Science and Diplomacy
- Advanced NMR Techniques and Applications
- Markov Chains and Monte Carlo Methods
- Radiation Detection and Scintillator Technologies
- Astrophysics and Cosmic Phenomena
- Cold Atom Physics and Bose-Einstein Condensates
- Geophysics and Gravity Measurements
- Particle accelerators and beam dynamics
- advanced mathematical theories
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara
2023-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
2018-2024
University of Bologna
2019-2023
University of Padua
2023
European Organization for Nuclear Research
2015-2022
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
2014-2021
University of Chinese Academy of Sciences
2017-2020
Tsinghua University
2020
Peking University
2020
State Key Laboratory of Nuclear Physics and Technology
2020
Observations of exotic structures in the J/ψp channel, which we refer to as charmonium-pentaquark states, Λ0b→J/ψK−p decays are presented. The data sample corresponds an integrated luminosity 3 fb−1 acquired with LHCb detector from 7 and 8 TeV pp collisions. An amplitude analysis three-body final state reproduces two-body mass angular distributions. To obtain a satisfactory fit seen spectrum, it is necessary include two Breit-Wigner amplitudes that each describe resonant state. significance...
The branching fraction ratio R(D^{*})≡B(B[over ¯]^{0}→D^{*+}τ^{-}ν[over ¯]_{τ})/B(B[over ¯]^{0}→D^{*+}μ^{-}ν[over ¯]_{μ}) is measured using a sample of proton-proton collision data corresponding to 3.0 fb^{-1} integrated luminosity recorded by the LHCb experiment during 2011 and 2012. tau lepton identified in decay mode τ^{-}→μ^{-}ν[over ¯]_{μ}ν_{τ}. semitauonic sensitive contributions from non-standard-model particles that preferentially couple third generation fermions, particular,...
An angular analysis of the B 0 → K *0(→ + π −)μ μ − decay is presented. The dataset corresponds to an integrated luminosity 3.0 fb−1 pp collision data collected at LHCb experiment. complete information from used determine CP-averaged observables and CP asymmetries, taking account possible contamination decays with system in S-wave configuration. their correlations are reported bins q 2, invariant mass squared dimuon system. determined both unbinned maximum likelihood fit by using principal...
A bstract search for $$ {B}_s^0\to {\overline{D}}^0{f}_0(980) <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mi>B</mml:mi><mml:mi>s</mml:mi><mml:mn>0</mml:mn></mml:msubsup><mml:mo>→</mml:mo><mml:msup><mml:mover><mml:mi>D</mml:mi><mml:mo>¯</mml:mo></mml:mover><mml:mn>0</mml:mn></mml:msup><mml:msub><mml:mi>f</mml:mi><mml:mn>0</mml:mn></mml:msub><mml:mfenced><mml:mn>980</mml:mn></mml:mfenced></mml:math> decays is performed using 3 . 0 fb 1− of pp collision data...
An angular analysis and a measurement of the differential branching fraction decay B 0 → ϕμ + μ − are presented, using data corresponding to an integrated luminosity 3.0 fb−1 pp collisions recorded by LHCb experiment at $$ \sqrt{s}=7 8 TeV. Measurements reported as function q 2, square dimuon invariant mass results found be consistent with Standard Model. In range 1 < 2 6 GeV2 /c 4, where precise theoretical calculations available, is more than 3σ below Model predictions.
In the Standard Model of particle physics, strength couplings b quark to u and c quarks, |Vub| |Vcb|, are governed by coupling quarks Higgs boson. Using data from LHCb experiment at Large Hadron Collider, probability for Λb0 baryon decay into p final state relative is measured. Combined with theoretical calculations strong interaction a previously measured value first measurement use baryonic performed. This consistent previous determinations using B meson decays specific states confirms...
The data sample of Λ0b→J/ψpK− decays acquired with the LHCb detector from 7 and 8 TeV pp collisions, corresponding to an integrated luminosity 3 fb−1, is inspected for presence J/ψp or J/ψK− contributions minimal assumptions about K−p contributions. It demonstrated at more than nine standard deviations that cannot be described alone, play a dominant role in this incompatibility. These model-independent results support previously obtained model-dependent evidence P+c→J/ψp...
A full amplitude analysis of $\Lambda_b^0 \to J/\psi p \pi^-$ decays is performed with a data sample acquired the LHCb detector from 7 and 8 TeV $pp$ collisions, corresponding to an integrated luminosity 3 fb$^{-1}$. significantly better description achieved when, in addition previously observed nucleon excitations $N\to p\pi^-$, either $P_c(4380)^+$ $P_c(4450)^+\to p$ states, K^-$ decays, or $Z_c(4200)^-\to state, reported $B^0 K^+ all three, are included models. The support model...
A search is presented for hidden-sector bosons, $\ensuremath{\chi}$, produced in the decay ${B}^{0}\ensuremath{\rightarrow}{K}^{*}(892{)}^{0}\ensuremath{\chi}$, with ${K}^{*}(892{)}^{0}\ensuremath{\rightarrow}{K}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and $\ensuremath{\chi}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$. The performed using $pp$-collision data corresponding to $3.0\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected LHCb detector. No...
A bstract The differential branching fraction of the rare decay Λ b 0 → Λμ + μ − is measured as a function q 2 , square dimuon invariant mass. analysis performed using proton-proton collision data, corresponding to an integrated luminosity 3 . fb −1 collected by LHCb experiment. Evidence signal observed in region below J/ψ Integrating over 15 < 20 GeV /c 4 $$ \mathrm{d}\mathrm{\mathcal{B}}\left({\varLambda}_b^0\to \varLambda {\mu}^{+}{\mu}^{-}\right)/d{q}^2=\left({1.18}_{-0.08}^{+0.09}\pm...
A measurement of the differential branching fraction decay B 0 → K ∗(892)0 μ + − is presented together with a determination S-wave π system in +π− −. The analysis based on pp-collision data corresponding to an integrated luminosity 3 fb−1 collected LHCb experiment. measurements are made bins invariant mass squared dimuon system, q 2. Precise theoretical predictions for decays available 2 region 1.1 < 6.0 GeV2 /c 4. In this region, range 796 m Kπ 996 MeV/c 2, found be $$...
Measurements are presented of electroweak boson production using data from $pp$ collisions at a centre-of-mass energy $\sqrt{s} = 8\mathrm{\,Te\kern -0.1em V}$. The analysis is based on an integrated luminosity $2.0\mathrm{\,fb}^{-1}$ recorded with the LHCb detector. bosons identified in $W\rightarrow\mu\nu$ and $Z\rightarrow\mu^{+}\mu^{-}$ decay channels. cross-sections measured for muons pseudorapidity range $2.0 < \eta 4.5$, transverse momenta $p_{\rm T} > 20{\mathrm{\,Ge\kern V\!/}c}$...
The resonant substructures of ${B}^{0}\ensuremath{\rightarrow}{\overline{D}}^{0}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ decays are studied with the Dalitz plot technique. In this study a data sample corresponding to an integrated luminosity $3.0\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ $pp$ collisions collected by LHCb detector is used. branching fraction decay in region $m({\overline{D}}^{0}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}})>2.1\text{...
Production cross-sections of prompt charm mesons are measured with the first data from pp collisions at LHC a centre-of-mass energy 13 TeV. The sample corresponds to an integrated luminosity 4.98 ± 0.19 pb−1 collected by LHCb experiment. production D 0, +, + , and *+ in bins meson transverse momentum, p T, rapidity, y, cover range 0 < T 15GeV/c 2.0 y 4.5. inclusive for four mesons, including charge conjugation, within 1 8 GeV/c found be $$ \begin{array}{l}\sigma \left( pp\to...
The product of the differential production cross-section and branching fraction decay is measured as a function beauty hadron transverse momentum, pT, rapidity, y. kinematic region measurements pT < 20 GeV/c 2.0 y 4.5. use data sample corresponding to an integrated luminosity 3fb−1 collected by LHCb detector in pp collisions at centre-of-mass energies 2011 2012. Based on previous results fragmentation ratio be
Angular correlations in ${B}^{+}\ensuremath{\rightarrow}X(3872){K}^{+}$ decays, with $X(3872)\ensuremath{\rightarrow}{\ensuremath{\rho}}^{0}J/\ensuremath{\psi}$, ${\ensuremath{\rho}}^{0}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and $J/\ensuremath{\psi}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$, are used to measure orbital angular momentum contributions determine the ${J}^{PC}$ value of $X(3872)$ meson. The data...
A measurement of the production cross-section for Z bosons that decay to muons is presented. The data were recorded by LHCb detector during pp collisions at a centre-of-mass energy 7 TeV, and correspond an integrated luminosity 1.0 fb−1. measured in pseudorapidity range 2.0 < η 4.5 with transverse momenta pT > 20 GeV/c. dimuon mass restricted 60 M μ + − 120 GeV/c2. $$ {\sigma}_{Z\to \mu }{+}_{\mu }-=\left(76.0\pm 0.3\pm 0.5\pm 1.0\pm 1.3\right)\mathrm{p}\mathrm{b} where uncertainties are due...
Production of ${B}_{c}^{+}$ mesons in proton-proton collisions at a center-of-mass energy 8 TeV is studied with data corresponding to an integrated luminosity $2.0\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ recorded by the LHCb experiment. The ratio production cross sections times branching fractions between ${B}_{c}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{\ensuremath{\pi}}^{+}$ and ${B}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{K}^{+}$ decays measured as function transverse...
Two-particle angular correlations are studied in proton-lead collisions at a nucleon–nucleon centre-of-mass energy of sNN=5TeV, collected with the LHCb detector LHC. The analysis is based on data recorded two beam configurations, which either direction proton or that lead ion analysed. measured laboratory system as function relative pseudorapidity, Δη, and azimuthal angle, Δϕ, for events different classes event activity bins particle transverse momentum. In high-activity long-range...
The production of $J/\psi$ mesons in proton-proton collisions at a centre-of-mass energy $\sqrt{s}=13$ TeV is studied with the \lhcb detector. Cross-section measurements are performed as function transverse momentum $p_\mathrm{T}$ and rapidity $y$ meson region $p_\mathrm{T}<14\mathrm{GeV}/c$ $2.0<y<4.5$, for both prompt from $b$-hadron decays. cross-sections integrated over kinematic coverage $15.03\pm 0.03\pm 0.94$ $\mu$b $2.25\pm 0.01\pm 0.14$ decays, assuming zero polarization meson....
Two structures are observed close to the kinematic threshold in Ξ0bπ− mass spectrum a sample of proton-proton collision data, corresponding an integrated luminosity 3.0 fb−1, recorded by LHCb experiment. In quark model, two baryonic resonances with content bds expected this region: spin-parity JP=(1/2)+ and JP=(3/2)+ states, denoted Ξ'−b Ξ*−b. Interpreting as these resonances, we measure differences width heavier state be m(Ξ'−b)−m(Ξ0b)−m(π−)=3.653±0.018±0.006 MeV/c2,...
The differential branching fraction with respect to the dimuon invariant mass squared, and CP asymmetry of B ± → π μ + − decay are measured for first time. CKM matrix elements |V td | ts |, ratio /V determined. analysis is performed using proton-proton collision data corresponding an integrated luminosity 3.0 fb−1, collected by LHCb experiment at centre-of-mass energies 7 8 TeV. total decays be $$ \begin{array}{l}\mathrm{\mathcal{B}}\left({B}^{\pm}\to {\pi}^{\pm...
Associated production of bottomonia and open charm hadrons in $pp$ collisions at $\sqrt{s}=7$ $8$TeV is observed using data corresponding to an integrated luminosity 3$fb^{-1}$ accumulated with the LHCb detector. The observation five combinations, $\Upsilon(1S)D^0$, $\Upsilon(2S)D^0$, $\Upsilon(1S)D^+$, $\Upsilon(2S)D^+$ $\Upsilon(1S)D^+_{s}$, reported. Production cross-sections are measured for $\Upsilon(1S)D^0$ $\Upsilon(1S)D^+$ pairs forward region. differential distributions indicate...