D. Hynds

Addendum: Test of lepton universality in beauty-quark decays

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 …

nl, ch, gb, es, fr, us, it, de, ru, br, pl, cn (code pays fourni par la source)

Measurement of the W boson mass

R. Aaij, Ahmed Sameh Wagih Abdelmotteleb, Carlos Abellán Beteta, T. Ackernley et autres

A bstract The W boson mass is measured using proton-proton collision data at $$ \sqrt{s} $$ s = 13 TeV corresponding to an integrated luminosity of 1.7 fb − 1 recorded during 2016 by the LHCb experiment. With a simultaneous fit of …

ch, nl, gb, es, fr, us, it, de, ru, br, pl, cn (code pays fourni par la source)

Simultaneous determination of CKM angle γ and charm mixing parameters

R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta, F. Abudinén et autres

Abstract A combination of measurements sensitive to the CP violation angle γ of the Cabibbo-Kobayashi-Maskawa unitarity triangle and to the charm mixing parameters that describe oscillations between D0 and $$ \overline{D} $$ D ¯ 0 mesons is performed. Results from the charm …

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Searches for rare $ {B}_s^0 $ and B$^{0}$ decays into four muons

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 …

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Observation of the Mass Difference between Neutral Charm-Meson Eigenstates

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^{-} …

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Observation of Multiplicity Dependent Prompt χc1(3872) and ψ(2S) Production in pp Collisions

R. Aaij, C. Abellán Beteta, T. Ackernley, B. Adeva et autres

The production of χ_{c1}(3872) and ψ(2S) hadrons is studied as a function of charged particle multiplicity in pp collisions at a center-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 2 fb^{-1}. For both states, the fraction that is produced …

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Measurement of the $Λ^0_b\rightarrow J/ψΛ$ angular distribution and the $Λ^0_b$ polarisation in $pp$ collisions

R. Aaij, C. Abellán Beteta, T. Ackernley, B. Adeva et autres

This paper presents an analysis of the $\Lambda^0_b\rightarrow J/\psi\Lambda$ angular distribution and the transverse production polarisation of $\Lambda^0_b$ baryons in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The measurements are performed using data corresponding to an integrated luminosity …

Updated measurement of decay-time-dependent CP asymmetries in D0→K+K− and D0→π+π− decays

R. Aaij, C. Abellán Beteta, T. Ackernley, B. Adeva et autres

A search for decay-time-dependent charge-parity ($CP$) asymmetry 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 at a center-of-mass energy of 13 TeV, and corresponding to an integrated luminosity of $5.4\text{ }\text{ }{\text{fb}}^{\ensuremath{-}1}$. The ${D}^{0}$ …

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Search for the Lepton-Flavor-Violating Decays B-s(0) -> pi(+/-mu -/+) and B-0 -> tau(+/-mu -/+)

R. Aaij, C. Abellán Beteta, B. Adeva, M. Adinolfi et autres

Results are reported from a search for the rare decays B-s(0) -> tau(+/-)mu(+/-) 1T and B -> tau(+/-)mu(+/-), where the r lepton is reconstructed in the channel r- irrg vr. These processes are effectively forbidden in the standard model, hut they can …

A search for $$ {\Xi}_{\mathrm{cc}}^{++} $$→ D+pK−π+ decays

R. Aaij, C. Abellán Beteta, B. Adeva, M. Adinolfi et autres

Abstract A search for the $$ {\Xi}_{cc}^{++} $$ Ξcc++ baryon through the $$ {\Xi}_{cc}^{++} $$ Ξcc++ → D+pK−π+decay is performed with a data sample corresponding to an integrated luminosity of 1.7 fb−1recorded by the LHCb experiment inppcollisions at a centre-of-mass energy of …

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Search for the lepton-flavour violating decays $\mathcal{B}(B^+ \to K^+ μ^{\pm} e^{\mp})$

R. Aaij, C. Abellán Beteta, T. Ackernley, B. Adeva et autres

Measurement of the Mass Difference Between Neutral Charm-Meson Eigenstates

R. Aaij, C. Abellán Beteta, B. Adeva, M. Adinolfi et autres

We report a measurement of the mass difference between neutral charm-meson eigenstates using a novel approach that enhances sensitivity to this parameter. We use $2.3\ifmmode\times\else\texttimes\fi{}{10}^{6}$ ${D}^{0}\ensuremath{\rightarrow}{K}_{\mathit{S}}^{0}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ decays reconstructed in proton-proton collisions collected by the LHCb experiment in 2011 and 2012. Allowing for …

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