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Search: authors:"E. Brondolin"

146 papers found.
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Measurement of exclusive \(\mathrm {\Upsilon }\) photoproduction from protons in \(\mathrm {p}\) Pb collisions at \(\sqrt{\smash [b]{s_{_{\mathrm {NN}}}}} = 5.02\,\text {TeV} \)

The exclusive photoproduction of \(\mathrm {\Upsilon }\mathrm {(nS)} \) meson states from protons, \(\gamma \mathrm {p} \rightarrow \mathrm {\Upsilon }\mathrm {(nS)} \,\mathrm {p}\) (with \(\mathrm {n}=1,2,3\)), is studied in ultraperipheral \(\mathrm {p}\)Pb collisions at a centre-of-mass energy per nucleon pair of \(\sqrt{\smash [b]{s_{_{\mathrm {NN}}}}} = 5.02\,\text {TeV...

Study of the underlying event in top quark pair production in \(\mathrm {p}\mathrm {p}\) collisions at 13 \(~\text {Te}\text {V}\)

Measurements of normalized differential cross sections as functions of the multiplicity and kinematic variables of charged-particle tracks from the underlying event in top quark and antiquark pair production are presented. The measurements are performed in proton-proton collisions at a center-of-mass energy of 13\(~\text {Te}\text {V}\), and are based on data collected by the CMS...

Measurement of differential cross sections for inclusive isolated-photon and photon+jet production in proton-proton collisions at \(\sqrt{s} = 13\,\text {TeV} \)

Measurements of inclusive isolated-photon and photon+jet production in proton–proton collisions at \(\sqrt{s} = 13\,\text {TeV} \) are presented. The analysis uses data collected by the CMS experiment in 2015, corresponding to an integrated luminosity of 2.26\(\,\text {fb}^{-1}\). The cross section for inclusive isolated photon production is measured as a function of the photon...

Search for heavy resonances decaying into two Higgs bosons or into a Higgs boson and a W or Z boson in proton-proton collisions at 13 TeV

Abstract A search is presented for massive narrow resonances decaying either into two Higgs bosons, or into a Higgs boson and a W or Z boson. The decay channels considered are \( \mathrm{H}\mathrm{H}\to \mathrm{b}\overline{\mathrm{b}}{\tau}^{+}{\tau}^{-} \) and \( \mathrm{V}\mathrm{H}\to \mathrm{q}\overline{\mathrm{q}}{\tau}^{+}{\tau}^{-} \), where H denotes the Higgs boson, and...

Measurements of Higgs boson properties in the diphoton decay channel in proton-proton collisions at \( \sqrt{s}=13 \) TeV

Abstract Measurements of Higgs boson properties in the H → γγ decay channel are reported. The analysis is based on data collected by the CMS experiment in proton-proton collisions at \( \sqrt{s}=13 \) TeV during the 2016 LHC running period, corresponding to an integrated luminosity of 35.9 fb−1. Allowing the Higgs mass to float, the measurement yields a signal strength relative...

Search for heavy resonances decaying into a vector boson and a Higgs boson in final states with charged leptons, neutrinos and b quarks at \( \sqrt{s}=13 \) TeV

Abstract A search for heavy resonances, decaying into the standard model vector bosons and the standard model Higgs boson, is presented. The final states considered contain a b quark-antiquark pair from the decay of the Higgs boson, along with electrons and muons and missing transverse momentum, due to undetected neutrinos, from the decay of the vector bosons. The mass spectra...

Search for the decay of a Higgs boson in the ℓℓγ channel in proton-proton collisions at \( \sqrt{s}=13 \) TeV

Abstract A search for a Higgs boson decaying into a pair of electrons or muons and a photon is described. Higgs boson decays to a Z boson and a photon (H → Zγ → ℓℓγ, ℓ = e or μ), or to two photons, one of which has an internal conversion into a muon pair (H → γ*γ → μμγ) were considered. The analysis is performed using a data set recorded by the CMS experiment at the LHC from...

Measurement of the production cross section for single top quarks in association with W bosons in proton-proton collisions at \( \sqrt{s}=13 \) TeV

Abstract A measurement is presented of the associated production of a single top quark and a W boson in proton-proton collisions at \( \sqrt{s}=13 \) TeV by the CMS Collaboration at the CERN LHC. The data collected corresponds to an integrated luminosity of 35.9 fb−1. The measurement is performed using events with one electron and one muon in the final state along with at least...

Search for new physics in dijet angular distributions using proton–proton collisions at \(\sqrt{s}=13\hbox {TeV}\) and constraints on dark matter and other models

A search is presented for physics beyond the standard model, based on measurements of dijet angular distributions in proton–proton collisions at \(\sqrt{s}=13\hbox {TeV}\). The data collected with the CMS detector at the LHC correspond to an integrated luminosity of 35.9\(\,\text {fb}^{-1}\). The observed distributions, corrected to particle level, are found to be in agreement...

Search for Zγ resonances using leptonic and hadronic final states in proton-proton collisions at \( \sqrt{s}=13 \) TeV

Abstract A search is presented for resonances decaying to a Z boson and a photon. The analysis is based on data from proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1, and collected with the CMS detector at the LHC in 2016. Two decay modes of the Z boson are investigated. In the leptonic channels, the Z boson...

Search for a heavy resonance decaying into a Z boson and a Z or W boson in 2ℓ2q final states at \( \sqrt{s}=13 \) TeV

Abstract A search has been performed for heavy resonances decaying to ZZ or ZW in 2ℓ2q final states, with two charged leptons (ℓ = e, μ) produced by the decay of a Z boson, and two quarks produced by the decay of a W or Z boson. The analysis is sensitive to resonances with masses in the range from 400 to 4500 GeV. Two categories are defined based on the merged or resolved...

Search for top squarks decaying via four-body or chargino-mediated modes in single-lepton final states in proton-proton collisions at \( \sqrt{s}=13 \) TeV

Abstract A search for the pair production of the lightest supersymmetric partner of the top quark \( \left({\tilde{\mathrm{t}}}_1\right) \) is presented. The search focuses on a compressed scenario where the mass difference between the top squark and the lightest supersymmetric particle, often considered to be the lightest neutralino \( \left({\tilde{\upchi}}_1^0\right) \), is...

Search for third-generation scalar leptoquarks decaying to a top quark and a \(\tau \) lepton at \(\sqrt{s}=13\,\text {Te}\text {V} \)

A search for pair production of heavy scalar leptoquarks (LQs), each decaying into a top quark and a \(\tau \) lepton, is presented. The search considers final states with an electron or a muon, one or two \(\tau \) leptons that decayed to hadrons, and additional jets. The data were collected in 2016 in proton–proton collisions at \(\sqrt{s}=13\,\text {Te}\text {V} \) with the...

Search for additional neutral MSSM Higgs bosons in the τ τ final state in proton-proton collisions at \( \sqrt{s}=13 \) TeV

Abstract A search is presented for additional neutral Higgs bosons in the τ τ final state in proton-proton collisions at the LHC. The search is performed in the context of the minimal supersymmetric extension of the standard model (MSSM), using the data collected with the CMS detector in 2016 at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9...

Measurement of the weak mixing angle using the forward–backward asymmetry of Drell–Yan events in \(\mathrm {p}\mathrm {p}\) collisions at 8 \(\,\text {TeV}\)

A measurement is presented of the effective leptonic weak mixing angle (\(\sin ^2\theta ^{\ell }_{\text {eff}}\)) using the forward–backward asymmetry of Drell–Yan lepton pairs (\(\mu \mu \) and \(\mathrm {e}\) \(\mathrm {e}\)) produced in proton–proton collisions at \(\sqrt{s}=8\,\text {TeV} \) at the CMS experiment of the LHC. The data correspond to integrated luminosities of...

Measurement of charged particle spectra in minimum-bias events from proton–proton collisions at \(\sqrt{s}=13\,\text {TeV} \)

Pseudorapidity, transverse momentum, and multiplicity distributions are measured in the pseudorapidity range \(|\eta | < 2.4\) for charged particles with transverse momenta satisfying \(p_{\mathrm {T}} > 0.5\,\text {GeV} \) in proton–proton collisions at a center-of-mass energy of \(\sqrt{s} = 13\,\text {TeV} \). Measurements are presented in three different event categories. The...

Search for vector-like T and B quark pairs in final states with leptons at \( \sqrt{s}=13 \) TeV

Abstract A search is presented for pair production of heavy vector-like T and B quarks in proton-proton collisions at \( \sqrt{s}=13 \) TeV. The data sample corresponds to an integrated luminosity of 35.9 fb−1, collected with the CMS detector at the CERN LHC in 2016. Pair production of T quarks would result in a wide range of final states, since vector-like T quarks of charge 2e...

Search for resonant pair production of Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at 13 TeV

Abstract A search for a narrow-width resonance decaying into two Higgs bosons, each decaying into a bottom quark-antiquark pair, is presented. The search is performed using proton-proton collision data corresponding to an integrated luminosity of 35.9 fb−1 at \( \sqrt{s}=13 \) TeV recorded by the CMS detector at the LHC. No evidence for such a signal is observed. Upper limits are...