Karam Kaspar

Search for light charged Higgs bosons decaying to charm and strange quarks in $$ t\overline{t} $$ events in proton-proton collisions at $$ \sqrt{s}=13 $$ TeV

A. Hayrapetyan, В. Макаренко, A. Tumasyan, W. Adam et autres

A bstract A search is presented for a light charged Higgs boson H ± in top quark pair production ( $$ \mathrm{t}\overline{\mathrm{t}} $$ t t ¯ ), where one of the top quarks decays to an H ± and a bottom quark, …

am, at, us, be, de, br (code pays fourni par la source)

Measurement of dijet angular distributions and search for beyond the standard model physics in proton-proton collisions at s=13TeV

Arzunik Gevorgyan, A. Hayrapetyan, В. Макаренко, A. Tumasyan et autres

A measurement is presented of dijet angular distributions in proton-proton collisions at s = 13 TeV , using data collected with the CMS detector at the CERN LHC and corresponding to an integrated luminosity of 138 f b − 1 . For …

Full event interpretation with machine-learning-based particle-flow reconstruction in the CMS detector

Aram Hayrapetyan, Vladimir Makarenko, A. Tumasyan, W. Adam et autres

Abstract The particle-flow (PF) algorithm constructs a global description of each particle collision by producing a comprehensive list of final-state particles, and is central to event reconstruction in the CMS experiment at the CERN LHC. The existing PF implementation relies on physics-motivated …

am, at, us, be, ph, br (code pays fourni par la source)

A search for microscopic black holes, string balls, and sphalerons in proton-proton collisions at $$ \sqrt{s}=13 $$ TeV

Aram Hayrapetyan, В. Макаренко, A. Tumasyan, W. Adam et autres

A bstract A search for microscopic black holes, string balls, and electroweak sphalerons using proton-proton collisions at $$ \sqrt{s}=13 $$ s = 13 TeV recorded with the CMS detector at the CERN LHC during the 2016–2018 data taking, and corresponding to an …

am, at, us, be, de, br (code pays fourni par la source)

Measurement of the top quark pair production cross section in PbPb collisions at $$ \sqrt{s_{\mathrm{NN}}}=5.36 $$ TeV

Andrey Belyaev, Arzunik Gevorgyan, A. Hayrapetyan, A. Tumasyan et autres

A bstract The inclusive cross section for top quark pair ( $$ \mathrm{t}\overline{\mathrm{t}} $$ t t ¯ ) production in lead-lead (PbPb) collisions is reported for the first time at a center-of-mass energy per nucleon pair of 5.36 TeV. The analysis uses …

gb, am, ca, at, us, be, de, br (code pays fourni par la source)

Search for a new heavy resonance decaying to a top quark and a neutral scalar boson in proton-proton collisions at s=13TeV

A. Hayrapetyan, В. Макаренко, A. Tumasyan, W. Adam et autres

A first search at the LHC for a new heavy resonance decaying to a top quark and a neutral scalar boson ϕ in the fully hadronic final state is presented, where the ϕ boson is identified by its decay into a bottom …

Search for Higgs boson pair production in the $$ \mathrm{b}\overline{\mathrm{b}}\mathrm{WW} $$ decay channel with two leptons in the final state using proton-proton collision data at $$ \sqrt{s}=13.6 $$ TeV

Arzunik Gevorgyan, A. Hayrapetyan, В. Макаренко, A. Tumasyan et autres

A bstract A search for Higgs boson pair production is presented, targeting final states where one Higgs boson decays to a bottom quark-antiquark pair and the other Higgs boson decays to two W bosons, both of which decay leptonically, to an electron …

am, ca, at, us, be, br (code pays fourni par la source)

Search for heavy resonances decaying into two Higgs bosons in the $$\text {b}{\bar{\text {b}}} \tau ^{+} \tau ^{-} $$ final state in proton–proton collisions at $$\sqrt{s} = 13\,\text {Te}\hspace{-.08em}\text {V} $$

A. Hayrapetyan, В. Макаренко, A. Tumasyan, W. Adam et autres

Abstract A search is presented for massive narrow-width resonances in the mass range of 1–4.5 $$\,\text {Te}\hspace{-.08em}\text {V}$$ Te V , decaying into pairs of Higgs bosons (HH). The search uses proton–proton collision data at a center-of-mass energy of 13 $$\,\text {Te}\hspace{-.08em}\text …

am, at, us, be, de, br (code pays fourni par la source)

Search for Higgs boson production at high transverse momentum in the WW decay channel in proton-proton collisions at $$ \sqrt{s}=13 $$ TeV

A. Hayrapetyan, В. Макаренко, A. Tumasyan, W. Adam et autres

A bstract A search for Higgs boson (H) production at high transverse momentum ( p T ) in the WW decay channel is presented. The analysis uses proton-proton collisions at $$ \sqrt{s}=13 $$ s = 13 TeV recorded by the CMS experiment …

am, at, us, be, de, br (code pays fourni par la source)

Measurement of the Υ(1S), Υ(2S), and Υ(3S) differential cross sections in pp collisions at $$ \sqrt{s}=13.6 $$ TeV

A. Hayrapetyan, В. Макаренко, A. Tumasyan, W. Adam et autres

A bstract The production cross sections of the Υ(1S), Υ(2S), and Υ(3S) mesons are measured in proton-proton collisions at $$ \sqrt{s}=13.6 $$ s = 13.6 TeV, using a data sample collected in 2022 by the CMS experiment and corresponding to an integrated …

am, at, us, be, de, br (code pays fourni par la source)

Search for the pair production of long-lived supersymmetric partners of the tau lepton in proton-proton collisions at $$ \sqrt{s}=13 $$ TeV

A. Hayrapetyan, В. Макаренко, A. Tumasyan, W. Adam et autres

A bstract Gauge-mediated supersymmetry-breaking models provide a strong motivation to search for a supersymmetric partner of the tau lepton (stau) with a macroscopic lifetime. Long-lived stau decays produce tau leptons that are displaced from the primary proton-proton interaction vertex, leading to an …

am, at, us, be, de, br (code pays fourni par la source)

System-size dependence of charged-particle suppression in ultrarelativistic nucleus-nucleus collisions

Andrey V. Belyaev, Arzunik Gevorgyan, A. Hayrapetyan, A. Tumasyan et autres

High-energy partons lose energy while propagating through the hot, strongly interacting medium produced in ultrarelativistic nucleus-nucleus collisions, leading to a suppression of particle production at high transverse momentum ( p T ). The dependence of this energy loss on the size of …