Accès ouvert
2021
article
OpenAlex
R. Aaij, Carlos Abellán Beteta, T. Ackernley, B. Adeva et autres
Using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of $8.5\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$, the observation of a new excited ${\mathrm{\ensuremath{\Xi}}}_{b}^{0}$ resonance decaying to the ${\mathrm{\ensuremath{\Xi}}}_{b}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ final state is presented. The state, referred to as ${\mathrm{\ensuremath{\Xi}}}_{b}(6227{)}^{0}$, …
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, Carlos Abellán Beteta, T. Ackernley, B. Adeva et autres
The decay ${\mathrm{\ensuremath{\Lambda}}}_{b}^{0}\ensuremath{\rightarrow}{\ensuremath{\eta}}_{c}(1S)p{K}^{\ensuremath{-}}$ is observed for the first time using a data sample of proton-proton collisions, corresponding to an integrated luminosity of $5.5\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$, collected with the LHCb experiment at a center-of-mass energy of 13 TeV. The branching fraction of the …
nl, ch, gb, es, fr, us, it, de, ru, br, pl, cn
(code pays fourni par la source)
Accès ouvert
2019
article
OpenAlex
R. Aaij, Carlos Abellán Beteta, B. Adeva, M. Adinolfi et autres
Results are reported from a search for the rare decays ${B}_{s}^{0}\ensuremath{\rightarrow}{\ensuremath{\tau}}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\mu}}^{\ensuremath{\mp}}$ and ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\tau}}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\mu}}^{\ensuremath{\mp}}$, where the $\ensuremath{\tau}$ lepton is reconstructed in the channel ${\ensuremath{\tau}}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\nu}}_{\ensuremath{\tau}}$. These processes are effectively forbidden in the standard model, but they can potentially occur at detectable rates in models …
nl, ch, es, gb, us, fr, it, de, ru, br, pl, cn
(code pays fourni par la source)
Accès ouvert
2019
article
OpenAlex
R. Aaij, Carlos Abellán Beteta, B. Adeva, M. Adinolfi et autres
A time-dependent analysis of the ${B}_{s}^{0}\ensuremath{\rightarrow}\ensuremath{\phi}\ensuremath{\gamma}$ decay rate is performed to determine the $CP$ -violating observables ${S}_{\ensuremath{\phi}\ensuremath{\gamma}}$ and ${C}_{\ensuremath{\phi}\ensuremath{\gamma}}$ and the mixing-induced observable ${\mathcal{A}}_{\ensuremath{\phi}\ensuremath{\gamma}}^{\mathrm{\ensuremath{\Delta}}}$. The measurement is based on a sample of $pp$ collision data recorded with the LHCb detector, corresponding to …
nl, ch, es, gb, us, fr, it, de, ru, br, pl, cn
(code pays fourni par la source)
Accès ouvert
2019
article
OpenAlex
R. Aaij, Carlos Abellán Beteta, T. Ackernley, B. Adeva et autres
The decay-time-dependent CP asymmetry in B 0 s → J/ψ K + K -decays is measured using proton-proton collision data, corresponding to an integrated luminosity of 1.9 fb -1 , collected with the LHCb detector at a centre-ofmass energy of 13 TeV …
nl, ch, gb, es, fr, ua, us, it, de, ru, br, cn, pl, Soudan du Sud
(code pays fourni par la source)
Accès ouvert
2019
article
OpenAlex
R. Aaij, Carlos Abellán Beteta, B. Adeva, M. Adinolfi et autres
The first measurement of the production rate of ${\mathrm{\ensuremath{\Xi}}}_{b}^{\ensuremath{-}}$ baryons in $pp$ collisions relative to that of ${\mathrm{\ensuremath{\Lambda}}}_{b}^{0}$ baryons is reported, using data samples collected by the LHCb experiment, and corresponding to integrated luminosities of 1, 2 and $1.6\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ at …
nl, ch, es, gb, us, fr, it, de, ru, br, pl, cn
(code pays fourni par la source)
Accès ouvert
2019
article
OpenAlex
R. Aaij, Carlos Abellán Beteta, B. Adeva, C. Aidala et autres
Abstract The branching fractions of the doubly Cabibbo-suppressed decays D + → K − K + K +, D + → π−π+ K + and D s + → π − K + K + are measured using the decays D + …
nl, ch, es, gb, us, fr, it, de, ru, br, pl, cn
(code pays fourni par la source)
Accès ouvert
2018
article
OpenAlex
R. Aaij, C. Abellán Beteta, B. Adeva, M. Adinolfi et autres
A Dalitz plot analysis of B 0 → η c (1S)K + π - decays is performed using data samples of pp collisions collected with the LHCb detector at centre-of-mass energies of √ s = 7, 8 and 13 TeV, corresponding to …
nl, ch, es, gb, us, fr, it, de, ru, br, cn, Zimbabwe, pl
(code pays fourni par la source)
Accès ouvert
2018
article
OpenAlex
R. Aaij, B. Adeva, M. Adinolfi, Z. Ajaltouni et autres
The time-dependent $CP$ asymmetries in ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and ${B}_{s}^{0}\ensuremath{\rightarrow}{K}^{+}{K}^{\ensuremath{-}}$ decays are measured using a data sample of $p$ $p$ collisions corresponding to an integrated luminosity of $3.0\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$, collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV. The …
fr
(code pays fourni par la source)
Accès ouvert
2018
article
OpenAlex
R. Aaij, B. Adeva, M. Adinolfi, Z. Ajaltouni et autres
A search for decays of Bc+ mesons to two charm mesons is performed for the first time using data corresponding to an integrated luminosity of 3.0fb−1, collected by the LHCb experiment in pp collisions at centre-of-mass energies of 7 and 8 TeV. …
ch, es, gb, fr, us, de, nl, ru, br, it, cn, pl
(code pays fourni par la source)