Accès ouvert
2023
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, F. Abudinén et autres
An amplitude analysis of ${B}^{0}\ensuremath{\rightarrow}J/\ensuremath{\psi}\ensuremath{\phi}{K}_{\text{S}}^{0}$ decays is performed using proton-proton collision data, corresponding to an integrated luminosity of $9\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$, collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV. Evidence with a significance of 4.0 standard …
nl, gb, ch, es, se, fr, us, it, de, br, cn, pl, ie, hu, ua, co, ro, au
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Accès ouvert
2023
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, F. Abudinén et autres
Two new excited states, Ω_{c}(3185)^{0} and Ω_{c}(3327)^{0}, are observed in the Ξ_{c}^{+}K^{-} invariant-mass spectrum using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb^{-1}. Five previously observed excited Ω_{c}^{0} states are confirmed, namely Ω_{c}(3000)^{0}, Ω_{c}(3050)^{0}, …
nl, gb, ch, es, se, fr, us, it, de, br, cn, pl, ie, hu, ua, co, ro, au
(code pays fourni par la source)
Accès ouvert
2023
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, F. Abudinén et autres
A bstract The B + → Jψη ′ K + decay is observed for the first time using proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of …
nl, gb, ch, es, se, fr, us, it, de, br, cn, cz, pl
(code pays fourni par la source)
Accès ouvert
2023
article
OpenAlex
C. Abellán Beteta, B. Adeva, H. Afsharnia, Z. Ajaltouni et autres
The branching fraction of the rare decay Λ_{b}^{0}→Λ(1520)μ^{+}μ^{-} is measured for the first time, in the squared dimuon mass intervals q^{2}, excluding the J/ψ and ψ(2S) regions. The data sample analyzed was collected by the LHCb experiment at center-of-mass energies of 7, …
nl, gb, ch, es, se, fr, us, it, de, br, cn, pl
(code pays fourni par la source)
Accès ouvert
2023
preprint
OpenAlex
LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb, Ph. Charpentier et autres
The decay-time-dependent $CP$ asymmetry in $B^0_s\to J/ψ(\to μ^{+}μ^{-}) K^{+}K^{-}$ decays is measured using proton-proton collision data, corresponding to an integrated luminosity of 6 $fb^{-1}$, collected with the LHCb detector at a center-of-mass energy of 13 TeV. Using a sample of approximately 349 …
es, it, de, cn, nl, fr, ch, gb, ua, us, pl
(code pays fourni par la source)
Accès ouvert
2022
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, F. Abudinén et autres
Abstract A precision measurement of theZboson production cross-section at $$ \sqrt{\mathrm{s}} $$ s = 13 TeV in the forward region is presented, usingppcollision data collected by the LHCb detector, corresponding to an integrated luminosity of 5.1 fb−1. The production cross-section is measured …
fr
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Accès ouvert
2022
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, F. Abudinén et autres
The first full angular analysis and an updated measurement of the decay-rate $CP$ asymmetry of the ${D}^{0}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$ and ${D}^{0}\ensuremath{\rightarrow}{K}^{+}{K}^{\ensuremath{-}}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$ decays are reported. The analysis uses proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV. …
nl, gb, ch, es, fr, us, it, de, ru, br, pl, cn
(code pays fourni par la source)
Accès ouvert
2022
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, F. Abudinén et autres
A measurement of the ratios of the effective decay widths of ${D}^{0}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ and ${D}^{0}\ensuremath{\rightarrow}{K}^{\ensuremath{-}}{K}^{+}$ decays over that of ${D}^{0}\ensuremath{\rightarrow}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ decays is performed with the LHCb experiment using proton--proton collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of …
nl, gb, ch, es, fr, us, it, de, ru, br, cn, pl
(code pays fourni par la source)
Accès ouvert
2022
article
OpenAlex
R. Aaij, Ahmed Sameh Wagih Abdelmotteleb, C. Abellán Beteta, F. Abudinén et autres
The first observation of the semileptonic $b$-baryon decay ${\mathrm{\ensuremath{\Lambda}}}_{b}^{0}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Lambda}}}_{c}^{+}{\ensuremath{\tau}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\tau}}$, with a significance of $6.1\ensuremath{\sigma}$, is reported using a data sample corresponding to $3\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of integrated luminosity, collected by the LHCb experiment at center-of-mass energies of 7 and 8 TeV at …
nl, gb, ch, es, fr, us, it, de, ru, br, pl, cn
(code pays fourni par la source)
Accès ouvert
2021
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, F. Abudinén et autres
Searches for rare $B_s^0$ and $B^0$ decays into four muons are performed using proton-proton collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 9 $\text{fb}^{-1}$. Direct decays and decays via light scalar and $J/\psi$ resonances are considered. No …
de
(code pays fourni par la source)
Accès ouvert
2021
article
OpenAlex
R. Aaij, C. Abellán Beteta, T. Ackernley, B. Adeva et autres
A measurement of mixing and CP violation in neutral charm mesons is performed using data reconstructed in proton-proton collisions collected by the LHCb experiment from 2016 to 2018, corresponding to an integrated luminosity of 5.4 fb^{-1}. A total of 30.6 million D^{0}→K_{S}^{0}π^{+}π^{-} …
nl, ch, gb, es, fr, us, it, de, ru, br, pl, cn
(code pays fourni par la source)
Accès ouvert
2020
article
OpenAlex
R. Aaij, C. Abellán Beteta, B. Adeva, M. Adinolfi et autres
Observations are reported of different sources of CP violation from an amplitude analysis of B^{+}→π^{+}π^{+}π^{-} decays, based on a data sample corresponding to an integrated luminosity of 3 fb^{-1} of pp collisions recorded with the LHCb detector. A large CP asymmetry is …
nl, ch, es, gb, us, fr, it, de, ru, br, pl, cn
(code pays fourni par la source)