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R. Aaij, A. S. W. Abdelmotteleb, Carlos Abellán Beteta, F. Abudinén et autres
A study is presented of $B^+ \to K^0_{\rm S} K^- π^+ K^-$ and $B^+ \to K^0_{\rm S} K^+ π^- K^+$ decays based on the analysis of proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 …
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R. Aaij, A. S. W. Abdelmotteleb, Carlos Abellán Beteta, F. Abudinén et autres
The first measurement of the $CP$ asymmetry of the decay rate ($A_{CP}$) and the $CP$ average ($ΣA_{\text{FB}}$) and $CP$ asymmetry ($ΔA_{\text{FB}}$) of the forward-backward asymmetry in the muon system of $\mathitΛ^+_c\to pμ^+μ^-$ decays is reported. The measurement is performed using a data …
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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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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 …
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F. Abudinén, T. Ackernley, B. Adeva, M. Adinolfi et autres
The radiative decays $χ_{c1}(3872)\rightarrowψ(2S)γ$ and $χ_{c1}(3872)\rightarrow J/ψγ$ are used to probe the~nature of the~$χ_{c1}(3872)$ state using proton-proton collision data collected with the LHCb detector, corresponding to an~integrated luminosity of~9fb$^{-1}$. Using the~$B^+\rightarrow χ_{c1}(3872)K^+$decay, the $χ_{c1}(3872)\rightarrow ψ(2S)γ$ process is observed for the first time …
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R. Aaij, Ahmed Sameh Wagih Abdelmotteleb, Carlos Abellán Beteta, F. Abudinén et autres
The first measurement of $\\phi(1020)$ meson production in fixed-target $p$Ne collisions at $\\sqrt{s_{NN}}=68.5$ GeV is presented. The $\\phi(1020)$ mesons are reconstructed in their $K^{+}K^{-}$ decay in a data sample consisting of proton collisions on neon nuclei at rest, corresponding to an integrated …
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R. Aaij, Ahmed Sameh Wagih Abdelmotteleb, Carlos Abellán Beteta, F. Abudinén et autres
The $C\!P$ asymmetry and branching fraction of the CKM-suppressed decay $B^+\!\to J\mskip -3mu/\mskip -2muψ\,π^+$ are precisely measured relative to the favoured decay $B^+\!\to J\mskip -3mu/\mskip -2muψ\,K^+$, using a sample of proton-proton collision data corresponding to an integrated luminosity of $5.4~\mathrm{fb}^{-1}$ recorded at …
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R. Aaij, A. S. W. Abdelmotteleb, F. Abudinén, Thomas Ackernley et autres
A measurement of the $CP$-violating parameters in $B_s^0 \to D_s^{\mp} K^{\pm}$ decays is reported, based on the analysis of proton-proton collision data collected by the LHCb experiment corresponding to an integrated luminosity of $6\,\mathrm{fb}^{-1}$ at a centre-of-mass energy of $13 \,\mathrm{TeV}$. The …
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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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R. Aaij, C. Abellán Beteta, T. Ackernley, B. Adeva et autres
Abstract A search is performed for heavy neutrinos in the decay of a W boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately $$3.0\, \text {fb} ^{-1} $$ 3.0 fb - 1 of proton–proton …
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R. Aaij, B. Adeva, M. Adinolfi, C. A. Aidala et autres
LPHE
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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 …
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