Accès ouvert
2024
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, Carlos Abellán Beteta, F. Abudinén et autres
A bstract The decays of the χ b1 (1P), χ b2 (1P), χ b1 (2P) and χ b2 (2P) mesons into the Υ(1S)μ + μ − final state are observed with a high significance using proton-proton collision data collected with the LHCb …
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Accès ouvert
2024
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta, F. Abudinén et autres
A bstract A measurement of the transverse polarization of the Λ and $$ \overline{\varLambda} $$ Λ ¯ hyperons in p Ne fixed-target collisions at $$ \sqrt{{\textrm{s}}_{\textrm{NN}}} $$ s NN = 68 . 4 GeV is presented using data collected by the LHCb …
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Accès ouvert
2024
article
OpenAlex
R. Aaij, Ahmed Sameh Wagih Abdelmotteleb, C. Abellan Beteta, F. Abudinén et autres
A bstract Decays of $$ {\Xi}_b^{-} $$ Ξ b − and $$ {\Omega}_b^{-} $$ Ω b − baryons to $$ {\Lambda}_c^{+}{h}^{-}{h}^{\prime -} $$ Λ c + h − h ′ − final states, with h − h ′− being π − π …
nl, gb, ch, us, es, se, fr, it, de, br, cn, cr, cz, pl
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Accès ouvert
2024
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, F. Abudinén et autres
A bstract A search for radiative decay of $$ {B}_s^0 $$ B s 0 mesons to orbitally excited K + K − states is performed using proton proton collisions recorded by the LHCb experiment, corresponding to an integrated luminosity of 9 fb …
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Accès ouvert
2024
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, F. Abudinén et autres
A bstract Measurements of the branching fraction ratio $$ \mathcal{B}\left(\phi \to {\mu}^{+}{\mu}^{-}\right)/\mathcal{B}\left(\phi \to {e}^{+}{e}^{-}\right) $$ B ϕ → μ + μ − / B ϕ → e + e − with $$ {D}_s^{+}\to {\pi}^{+}\phi $$ D s + → π + ϕ …
nl, gb, ch, es, se, us, fr, it, de, br, cn, cr, cz, pl
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Accès ouvert
2024
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, F. Abudinén et autres
A bstract The ratio of production cross-sections of ψ (2 S ) over J/ψ mesons as a function of charged-particle multiplicity in proton-proton collisions at a centre-of-mass energy $$ \sqrt{s} $$ s = 13 TeV is measured with a data sample collected …
nl, gb, ch, es, se, us, fr, it, de, br, cn, cr, cz, pl
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Accès ouvert
2024
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, F. Abudinén et autres
A bstract The ratio of branching fractions between B 0 → J/ψπ 0 and B + → J/ψK *+ decays is measured with proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb − 1 . …
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Accès ouvert
2024
erratum
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, F. Abudinén et autres
We report on a measurement of the + c to D 0 production ratio in peripheral PbPb collisions at s NN = 5.02 TeV with the LHCb detector in the forward rapidity region
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Accès ouvert
2024
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, F. Abudinén et autres
A bstract The production cross-section of J/ψ pairs in proton-proton collisions at a centre-of-mass energy of $$ \sqrt{s} $$ s = 13 TeV is measured using a data sample corresponding to an integrated luminosity of 4 . 2 fb − 1 collected …
nl, gb, ch, es, se, fr, us, it, de, br, cn, cr, cz, pl
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Accès ouvert
2022
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, F. J. Abudinen Gallego et autres
Abstract Conventional, hadronic matter consists of baryons and mesons made of three quarks and a quark–antiquark pair, respectively 1,2 . Here, we report the observation of a hadronic state containing four quarks in the Large Hadron Collider beauty experiment. This so-called tetraquark …
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Accès ouvert
2022
article
OpenAlex
C. Ahdida, Atakan Tugberk Akmete, R. Albanese, J. Alt et autres
Abstract The Search for Hidden Particles (SHiP) Collaboration has proposed a general-purpose experimental facility operating in beam-dump mode at the CERN SPS accelerator to search for light, feebly interacting particles. In the baseline configuration, the SHiP experiment incorporates two complementary detectors. The …
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Accès ouvert
2022
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, F. J. Abudinen Gallego et autres
Abstract A search is performed for massive long-lived particles (LLPs) decaying semileptonically into a muon and two quarks. Two kinds of LLP production processes were considered. In the first, a Higgs-like boson with mass from 30 to 200 $$\text {\,GeV\!/}c^2$$ \,GeV\!/ c …
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