E. Usai
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View article: Spatio-Temporal Anomaly Detection with Graph Networks for Data Quality Monitoring of the Hadron Calorimeter
Spatio-Temporal Anomaly Detection with Graph Networks for Data Quality Monitoring of the Hadron Calorimeter Open
The Compact Muon Solenoid (CMS) experiment is a general-purpose detector for high-energy collision at the Large Hadron Collider (LHC) at CERN. It employs an online data quality monitoring (DQM) system to promptly spot and diagnose particle…
View article: Spatio-Temporal Anomaly Detection with Graph Networks for Data Quality Monitoring of the Hadron Calorimeter
Spatio-Temporal Anomaly Detection with Graph Networks for Data Quality Monitoring of the Hadron Calorimeter Open
The Compact Muon Solenoid (CMS) experiment is a general-purpose detector for high-energy collision at the Large Hadron Collider (LHC) at CERN. It employs an online data quality monitoring (DQM) system to promptly spot and diagnose particle…
View article: Four-top quark physics at the LHC
Four-top quark physics at the LHC Open
The production of four top quarks presents a rare process in the Standard Model that provides unique opportunities and sensitivity to Standard Model observables including potential enhancement of many popular new physics extensions. This a…
View article: Search for Higgs Boson Pair Production in the Four b Quark Final State in Proton-Proton Collisions at sqrt[s]=13 TeV.
Search for Higgs Boson Pair Production in the Four b Quark Final State in Proton-Proton Collisions at sqrt[s]=13 TeV. Open
A search for pairs of Higgs bosons produced via gluon and vector boson fusion is presented, focusing on the four b quark final state. The data sample consists of proton-proton collisions at a center-of-mass energy of 13 TeV, collected with…
View article: Four-top quark physics at the LHC
Four-top quark physics at the LHC Open
The production of four top quarks is a rare process in the Standard Model that provides unique opportunities and sensitivity to Standard Model observables including potential enhancement from many popular new physics extensions. This artic…
View article: End-to-end jet classification of boosted top quarks with the CMS open data
End-to-end jet classification of boosted top quarks with the CMS open data Open
Here we describe a novel application of the end-to-end deep learning technique to the task of discriminating top quark-initiated jets from those originating from the hadronization of a light quark or a gluon. The end-to-end deep learning t…
View article: Strange quark as a probe for new physics in the Higgs sector
Strange quark as a probe for new physics in the Higgs sector Open
This paper describes a novel algorithm for tagging jets originating from the hadronisation of strange quarks (strange-tagging) with the future International Large Detector (ILD) at the International Linear Collider (ILC). It also presents …
View article: Observation of the B$_\mathrm{c}^+$ meson in PbPb and pp collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
Observation of the B$_\mathrm{c}^+$ meson in PbPb and pp collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV Open
The B$_\mathrm{c}^+$ meson is observed for the first time in heavy ion collisions. Data from the CMS detector are used to measure the production of the B$_\mathrm{c}^+$ meson in lead-lead (PbPb) and proton-proton (pp) collisions at a cente…
View article: Search for single production of a vector-like T quark decaying to a top quark and a Z boson in the final state with jets and missing transverse momentum at $ \sqrt{s} $ = 13 TeV
Search for single production of a vector-like T quark decaying to a top quark and a Z boson in the final state with jets and missing transverse momentum at $ \sqrt{s} $ = 13 TeV Open
A search is presented for single production of a vector-like T quark with charge 2/3 $e$, in the decay channel featuring a top quark and a Z boson, with the top quark decaying hadronically and the Z boson decaying to neutrinos. The search …
View article: Measurement of the inclusive and differential WZ production cross sections, polarization angles, and triple gauge couplings in pp collisions at $ \sqrt{s} $ = 13 TeV
Measurement of the inclusive and differential WZ production cross sections, polarization angles, and triple gauge couplings in pp collisions at $ \sqrt{s} $ = 13 TeV Open
The associated production of a W and a Z boson is studied in final states with multiple leptons produced in proton-proton (pp) collisions at a centre-of-mass energy of 13 TeV using 137 fb$^{-1}$ of data collected with the CMS detector at t…
View article: Nuclear modification of $\Upsilon$ states in pPb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV
Nuclear modification of $\Upsilon$ states in pPb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV Open
Production cross sections of $\Upsilon$(1S), $\Upsilon$(2S), and $\Upsilon$(3S) states decaying into \muplusmuminus in proton-lead (pPb) collisions are reported using data collected by the CMS experiment at$\sqrt{s_\mathrm{NN}}$ = 5.02 TeV…
View article: Search for a W' boson decaying to a vector-like quark and a top or bottom quark in the all-jets final state at $\\sqrt{s}$ = 13 TeV
Search for a W' boson decaying to a vector-like quark and a top or bottom quark in the all-jets final state at $\\sqrt{s}$ = 13 TeV Open
A search is presented for a heavy W' boson resonance decaying to a B or T vector-like quark and a t or a b quark, respectively. The analysis is performed using proton-proton collisions collected with the CMS detector at the LHC. The data c…
View article: Search for long-lived heavy neutral leptons with displaced vertices in proton-proton collisions at $\sqrt{s}$ =13 TeV
Search for long-lived heavy neutral leptons with displaced vertices in proton-proton collisions at $\sqrt{s}$ =13 TeV Open
A search for heavy neutral leptons (HNLs), the right-handed Dirac or Majorana neutrinos, is performed in final states with three charged leptons (electrons or muons) using proton-proton collision data collected by the CMS experiment at $\s…
View article: Measurement of the inclusive and differential $\mathrm{t\bar{t}}\gamma$ cross sections in the dilepton channel and effective field theory interpretation in proton-proton collisions at $\sqrt{s}$ =13 TeV
Measurement of the inclusive and differential $\mathrm{t\bar{t}}\gamma$ cross sections in the dilepton channel and effective field theory interpretation in proton-proton collisions at $\sqrt{s}$ =13 TeV Open
The production cross section of a top quark pair in association with a photon is measured in proton-proton collisions in the decay channel with two oppositely charged leptons (e$^{±}$μ$^{∓}$, e$^{+}$e$^{−}$, or μ$^{+}$μ$^{−}$). The measure…
View article: Search for supersymmetry in final states with two or three soft leptons and missing transverse momentum in proton-proton collisions at $ \sqrt{s} $ = 13 TeV
Search for supersymmetry in final states with two or three soft leptons and missing transverse momentum in proton-proton collisions at $ \sqrt{s} $ = 13 TeV Open
A search for supersymmetry in events with two or three low-momentum leptons and missing transverse momentum is performed. The search uses proton-proton collisions at $\\sqrt{s}$ = 13 TeV collected in the three-year period 2016–2018 by the …
View article: Identification of hadronic tau lepton decays using a deep neural network
Identification of hadronic tau lepton decays using a deep neural network Open
A new algorithm is presented to discriminate reconstructed hadronic decays of tau leptons (τh) that originate from genuine tau leptons in the CMS detector against τh candidates that originate from quark or gluon jets, electrons, or muons. …
View article: Measurement of the Drell-Yan forward-backward asymmetry at high dilepton masses in proton-proton collisions at $\sqrt{s}$ = 13 TeV
Measurement of the Drell-Yan forward-backward asymmetry at high dilepton masses in proton-proton collisions at $\sqrt{s}$ = 13 TeV Open
A measurement of the forward-backward asymmetry of pairs of oppositely charged leptons (dimuons and dielectrons) produced by the Drell-Yan process in proton-proton collisions is presented. The data sample corresponds to an integrated lumi…
View article: Measurement of W$^\pm\gamma$ differential cross sections in proton-proton collisions at $\sqrt{s}$ = 13 TeV and effective field theory constraints
Measurement of W$^\pm\gamma$ differential cross sections in proton-proton collisions at $\sqrt{s}$ = 13 TeV and effective field theory constraints Open
Differential cross section measurements of W$^\pm\gamma$ production in proton-proton collisions at $\sqrt{s}$ = 13 TeV are presented. The data set used in this study was collected with the CMS detector at the CERN LHC in 2016-2018 with an …
View article: Search for new physics in the lepton plus missing transverse momentum final state in proton-proton collisions at $\sqrt{s} =$ 13 TeV
Search for new physics in the lepton plus missing transverse momentum final state in proton-proton collisions at $\sqrt{s} =$ 13 TeV Open
A search for physics beyond the standard model (SM) in final states with an electron or muon and missing transverse momentum is presented. The analysis uses data from proton-proton collisions at a centre-of-mass energy of 13 TeV, collected…
View article: Search for new particles in an extended Higgs sector with four b quarks in the final state at $\sqrt{s}$ = 13 TeV
Search for new particles in an extended Higgs sector with four b quarks in the final state at $\sqrt{s}$ = 13 TeV Open
A search for an extended Higgs sector, characterized by a massive resonance X decaying to a pair of spin-0 bosons $\phi$ that themselves decay to pairs of bottom quarks, is presented. The analysis is restricted to the mass ranges $m_\phi$ …
View article: Inclusive nonresonant multilepton probes of new phenomena at $\sqrt s$=13 TeV
Inclusive nonresonant multilepton probes of new phenomena at $\sqrt s$=13 TeV Open
An inclusive search for nonresonant signatures of beyond the standard model (SM) phenomena in events with three or more charged leptons, including hadronically decaying $τ$ leptons, is presented. The analysis is based on a data sample corr…
View article: Study of dijet events with large rapidity separation in proton-proton collisions at $ \sqrt{s} $ = 2.76 TeV
Study of dijet events with large rapidity separation in proton-proton collisions at $ \sqrt{s} $ = 2.76 TeV Open
The cross sections for inclusive and Mueller-Navelet dijet production are measured as a function of the rapidity separation between the jets in proton-proton collisions at $\\sqrt{s}$ = 2.76 TeV for jets with transverse momentum pT > 35 Ge…
View article: Observation of B$^0$$\to$$\psi$(2S)K$^0_\mathrm{S}\pi^+\pi^-$ and B$^0_\mathrm{S}$$\to$$\psi$(2S)K$^0_\mathrm{S}$ decays
Observation of B$^0$$\to$$\psi$(2S)K$^0_\mathrm{S}\pi^+\pi^-$ and B$^0_\mathrm{S}$$\to$$\psi$(2S)K$^0_\mathrm{S}$ decays Open
Using a data sample of $\sqrt{s}$ = 13 TeV proton-proton collisions collected by the CMS experiment at the LHC in 2017 and 2018 with an integrated luminosity of 103 fb$^{-1}$, the B$^0$$\to$$\psi$(2S)K$^0_\mathrm{S}$ and B$^0_\mathrm{S}$$\…
View article: Probing Charm Quark Dynamics via Multiparticle Correlations in Pb-Pb Collisions at $\sqrt{s_\mathrm{NN}}$ =5.02 TeV
Probing Charm Quark Dynamics via Multiparticle Correlations in Pb-Pb Collisions at $\sqrt{s_\mathrm{NN}}$ =5.02 TeV Open
Multiparticle azimuthal correlations of prompt D$^0$ mesons are measured in PbPb collisions at a nucleon-nucleon center-of-mass energy of $\\sqrt{s_\\mathrm{NN}}$ =5.02 TeV. The data, collected using the CMS detector at the LHC in 2018, co…
View article: Evidence for WW/WZ vector boson scattering in the decay channel $\\ell\\nu$qq produced in association with two jets in proton-proton collisions at $\\sqrt{s} = $ 13 TeV
Evidence for WW/WZ vector boson scattering in the decay channel $\\ell\\nu$qq produced in association with two jets in proton-proton collisions at $\\sqrt{s} = $ 13 TeV Open
Evidence is reported for electroweak (EW) vector boson scattering in the decay channel $\\ell\\nu$qq of two weak vector bosons WV (V = W or Z), produced in association with two parton jets. The search uses a data set of proton-proton colli…
View article: Determination of $\kappa_\text{t}$ from $\text{t}\bar{\text{t}}$, $\text{t}\bar{\text{t}}\text{t}\bar{\text{t}}$, and others
Determination of $\kappa_\text{t}$ from $\text{t}\bar{\text{t}}$, $\text{t}\bar{\text{t}}\text{t}\bar{\text{t}}$, and others Open
In this document I report the determination of the Yukawa coupling of the top quark in $\\text{t}\\bar{\\text{t}}$ and $\\text{t}\\bar{\\text{t}}\\text{t}\\bar{\\text{t}}$ final states in ATLAS and CMS. I will also briefly describe the det…