Accès ouvert
2025
article
OpenAlex
Aram Hayrapetyan, A. Tumasyan, W. Adam, J. W. Andrejkovic et autres
A first search for beyond the standard model physics in jet multiplicity patterns of multilepton events is presented, using a data sample corresponding to an integrated luminosity of 138 fb^{-1} of 13 TeV proton-proton collisions recorded by the CMS detector at the …
am, at, us, be, in, br, ve, mx
(code pays fourni par la source)
Accès ouvert
2025
article
OpenAlex
A. Hayrapetyan, A. Tumasyan, W. Adam, J. W. Andrejkovic et autres
Nuclear medium effects on B^{+} meson production are studied using the binary-collision scaled cross section ratio between events of different charged-particle multiplicities from proton-lead collisions. Data, collected by the CMS experiment in 2016 at a nucleon-nucleon center-of-mass energy of sqrt[s_{NN}]=8.16 TeV, corresponding …
am, at, in, us, be, br
(code pays fourni par la source)
Accès ouvert
2025
article
OpenAlex
Aram Hayrapetyan, A. Tumasyan, W. Adam, J. W. Andrejkovic et autres
A measurement of the ratio of branching fractions R ( J / ψ ) = B ( B c + → J / ψ τ + ν τ ) / B ( B c + → J / ψ μ + ν …
am, at, in, us, be, br
(code pays fourni par la source)
Accès ouvert
2025
article
OpenAlex
Aram Hayrapetyan, A. Tumasyan, W. Adam, J. W. Andrejkovic et autres
A search is presented for an extended Higgs sector with two new particles, X and ϕ, in the process X→ϕϕ→(γγ)(γγ). Novel neural networks classify events with diphotons that are merged and determine the diphoton masses. The search uses LHC proton-proton collision data …
am, at, in, us, be, br
(code pays fourni par la source)
Accès ouvert
2023
article
OpenAlex
A. Tumasyan, W. Adam, J. W. Andrejkovic, T. Bergauer et autres
Abstract The double differential cross sections of the Drell–Yan lepton pair ( $$\ell ^+\ell ^-$$ ℓ + ℓ - , dielectron or dimuon) production are measured as functions of the invariant mass $$m_{\ell \ell }$$ m ℓ ℓ , transverse momentum $$p_{\textrm{T}} …
am, at, be, Égypte, kr, br
(code pays fourni par la source)
Accès ouvert
2023
article
OpenAlex
A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic et autres
A bstract Results are presented from a search for CP violation in top quark pair production, using proton-proton collisions at a center-of-mass energy of 13 TeV. The data used for this analysis consist of final states with two charged leptons collected by …
am, at, be, br
(code pays fourni par la source)
Accès ouvert
2023
article
OpenAlex
A. Tumasyan, W. Adam, Janik Walter Andrejkovic, T. Bergauer et autres
A bstract The collective behavior of $$ {\textrm{K}}_{\textrm{S}}^0 $$ K S 0 and $$ \Lambda /\overline{\Lambda} $$ Λ / Λ ¯ strange hadrons is studied by measuring the elliptic azimuthal anisotropy ( v 2 ) using the scalar-product and multiparticle correlation methods. …
am, at, be, br
(code pays fourni par la source)
Accès ouvert
2022
article
OpenAlex
A. Tumasyan, W. Adam, Janik Walter Andrejkovic, T. Bergauer et autres
Abstract A measurement of the forward-backward asymmetry of pairs of oppositely charged leptons (dimuons and dielectrons) produced by the Drell-Yan process in proton-proton collisions is presented. The data sample corresponds to an integrated luminosity of 138 fb−1 collected with the CMS detector …
am, at, by, be, fr, br
(code pays fourni par la source)
Accès ouvert
2022
article
OpenAlex
A. Tumasyan, W. Adam, J. W. Andrejkovic, T. Bergauer et autres
Abstract A search for heavy neutral leptons (HNLs), the right-handed Dirac or Majorana neutrinos, is performed in final states with three charged leptons (electrons or muons) using proton-proton collision data collected by the CMS experiment at $$ \sqrt{s} $$ s = 13 …
am, at, be, br
(code pays fourni par la source)
Accès ouvert
2021
article
OpenAlex
A. M. Sirunyan, A. Tumasyan, W. Adam, F. Ambrogi et autres
Event-by-event long-range correlations of azimuthal anisotropy Fourier coefficients $({v}_{n})$ in 8.16 TeV $p\mathrm{Pb}$ data, collected by the CMS experiment at the CERN Large Hadron Collider, are extracted using a subevent four-particle cumulant technique applied to very low multiplicity events. Each combination of …
am, at, be, us
(code pays fourni par la source)
Accès ouvert
2020
article
OpenAlex
A. M. Sirunyan, A. Tumasyan, W. Adam, F. Ambrogi et autres
The second- and third-order azimuthal anisotropy Fourier harmonics of charged particles produced in $\text{pPb}$ collisions, at $\sqrt{{s}_{NN}}=8.16\phantom{\rule{0.16em}{0ex}}\text{TeV}$, are studied over a wide range of event multiplicities. Multiparticle correlations are used to isolate global properties stemming from the collision overlap geometry. The second-order …
am, at, be, us
(code pays fourni par la source)
Accès ouvert
2018
article
OpenAlex
A. M. Sirunyan, A. Tumasyan, W. Adam, F. Ambrogi et autres
Abstract A search for resonances in the mass range 12–70 GeV produced in association with a b quark jet and a second jet, and decaying to a muon pair, is reported. The analysis is based on data from proton-proton collisions at center-of-mass …
am, at, be
(code pays fourni par la source)