Accès ouvert
2025
article
OpenAlex
A. Hayrapetyan, A. Tumasyan, W. Adam, J. W. Andrejkovic et autres
An analysis is presented based on models of the intrinsic transverse momentum (intrinsic kT ) of partons in nucleons by studying the dilepton transverse momentum in Drell-Yan events. Using parameter tuning in event generators and existing data from fixed-target experiments and from …
am, at, us, be, in, br, ve, mx
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Accès ouvert
2025
article
OpenAlex
A. Hayrapetyan, A. Tumasyan, W. Adam, Janik Walter Andrejkovic et autres
A search is presented for fractionally charged particles with charges below 1e , using their small energy loss in the tracking detector as a key variable to observe a signal. The analyzed dataset corresponds to an integrated luminosity of 138 fb−1 of …
am, at, in, be, gb, 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
2024
article
OpenAlex
A. Tumasyan, W. Adam, J. W. Andrejkovic, T. Bergauer et autres
The production of ϒ(2S) and ϒ(3S) mesons in lead-lead (Pb-Pb) and proton-proton (pp) collisions is studied in their dimuon decay channel using the CMS detector at the LHC. The ϒ(3S) meson is observed for the first time in Pb-Pb collisions, with a …
am, us, at, be, br
(code pays fourni par la source)
Accès ouvert
2019
article
OpenAlex
A. M. Sirunyan, A. Tumasyan, W. Adam, F. Ambrogi et autres
Abstract Measurements of the differential cross section for the Drell-Yan process, based on proton-proton collision data at a centre-of-mass energy of 13 TeV, collected by the CMS experiment, are presented. The data correspond to an integrated luminosity of 2.8 (2.3) fb −1 …
am, at, be
(code pays fourni par la source)