Accès ouvert
2024
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta, F. Abudinén et autres
A bstract The first measurement of the Z boson production cross-section at centre-of-mass energy $$ \sqrt{s} $$ s = 5 . 02 TeV in the forward region is reported, using pp collision data collected by the LHCb experiment in year 2017, corresponding …
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Accès ouvert
2023
article
OpenAlex
R. Aaij, C. Abellán Beteta, T. Ackernley, B. Adeva et autres
In a new analysis since the publication of the original article, the LHCb collaboration performs a simultaneous test of muon-electron universality using \({B}^{+}\to {K}^{+}{{\mathscr{l}}}^{-}{{\mathscr{l}}}^{+}\) and \({B}^{0}\to {K}^{* 0}{{\mathscr{l}}}^{-}{{\mathscr{l}}}^{+}\) ( \({\mathscr{l}}=e,\mu\) ) decays with data collected between 2011 and 2018, corresponding to an …
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Accès ouvert
2022
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, F. Abudinén et autres
The first study of the angular distribution of ${\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$ pairs produced in the forward rapidity region via the Drell-Yan reaction $pp\ensuremath{\rightarrow}{\ensuremath{\gamma}}^{*}/Z+X\ensuremath{\rightarrow}{\ensuremath{\ell}}^{+}{\ensuremath{\ell}}^{\ensuremath{-}}+X$ is presented, using data collected with the LHCb detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity …
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Accès ouvert
2022
article
OpenAlex
R. Aaij, Ahmed Sameh Wagih Abdelmotteleb, C. Abellán Beteta, F. J. Abudinen Gallego et autres
Abstract A data sample collected with the LHCb detector corresponding to an integrated luminosity of 9 fb−1 is used to measure eleven CP violation observables in B±→ Dh± decays, where h is either a kaon or a pion. The neutral D meson …
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, 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
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Accès ouvert
2022
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, T. Ackernley et autres
Two narrow resonant states are observed in the ${\mathrm{\ensuremath{\Lambda}}}_{b}^{0}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ mass spectrum using a data sample of proton-proton collisions at a center-of-mass energy of 13 TeV, collected by the LHCb experiment and corresponding to an integrated luminosity of $6\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$. The minimal …
nl, gb, ch, es, fr, us, it, de, ru, br, pl, cn
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Accès ouvert
2022
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, F. Abudinén et autres
The photon polarization in $b\ensuremath{\rightarrow}s\ensuremath{\gamma}$ transitions is measured for the first time in radiative $b$ -baryon decays exploiting the unique spin structure of ${\mathrm{\ensuremath{\Lambda}}}_{b}^{0}\ensuremath{\rightarrow}\mathrm{\ensuremath{\Lambda}}\ensuremath{\gamma}$ decays. A data sample corresponding to an integrated luminosity of $6\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected by the LHCb experiment …
fr
(code pays fourni par la source)
Accès ouvert
2022
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, Carlos Abellán Beteta, F. J. Abudinen Gallego et autres
Abstract The production cross-section of theχc1(3872) state relative to theψ(2S) meson is measured using proton-proton collision data collected with the LHCb experiment at centre-of-mass energies of $$ \sqrt{s} $$ s = 8 and 13 TeV, corresponding to integrated luminosities of 2.0 and …
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Accès ouvert
2021
article
OpenAlex
R. Aaij, A. S. W. Abdelmotteleb, Carlos Abellán Beteta, F. J. Abudinen Gallego et autres
A study of ${\mathrm{\ensuremath{\Lambda}}}_{b}^{0}$ baryon decays to the $Dp{K}^{\ensuremath{-}}$ final state is presented based on a proton-proton collision data sample corresponding to an integrated luminosity of $9\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected with the LHCb detector. Two ${\mathrm{\ensuremath{\Lambda}}}_{b}^{0}$ decays are considered, ${\mathrm{\ensuremath{\Lambda}}}_{b}^{0}\ensuremath{\rightarrow}Dp{K}^{\ensuremath{-}}$ with $D\ensuremath{\rightarrow}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ …
nl, gb, ch, es, fr, us, it, de, ru, br, pl, cn
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Accès ouvert
2021
article
OpenAlex
R. Aaij, Carlos Abellán Beteta, T. Ackernley, B. Adeva et autres
A search for time-dependent violation of the charge-parity symmetry in ${D}^{0}\ensuremath{\rightarrow}{K}^{+}{K}^{\ensuremath{-}}$ and ${D}^{0}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ decays is performed at the LHCb experiment using proton-proton collision data recorded from 2015 to 2018 at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of …
nl, ch, gb, es, fr, us, it, de, ru, br, pl, cn
(code pays fourni par la source)
Accès ouvert
2021
article
OpenAlex
R. Aaij, Carlos Abellán Beteta, T. Ackernley, B. Adeva et autres
The ratio of the ${B}_{s}^{0}$ and ${B}^{0}$ fragmentation fractions, ${f}_{s}/{f}_{d}$, in proton-proton collisions at the LHC, is obtained as a function of $B$-meson transverse momentum and collision center-of-mass energy from the combined analysis of different $B$-decay channels measured by the LHCb experiment. …
fr
(code pays fourni par la source)
Accès ouvert
2021
article
OpenAlex
R. Aaij, Carlos Abellán Beteta, T. Ackernley, B. Adeva et autres
Abstract The first search for the doubly heavy baryon and a search for the baryon are performed using collision data collected via the experiment from 2016 to 2018 at a centre-of-mass energy of , corresponding to an integrated luminosity of 5.2 . …
nl, ch, gb, es, fr, us, it, de, ru, br, pl, cn
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