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LHCb Papers

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2023-03-17
09:58
Observation of the $B^+ \rightarrow J/\psi \eta^{\prime} K^+$ decay
The $B^+ \rightarrow J/\psi \eta^{\prime} K^+$ 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 13TeV, corresponding to a total integrated luminosity of 9fb$^{-1}$. [...]
arXiv:2303.09443 ; LHCb-PAPER-2022-054 ; CERN-EP-2023-022 ; LHCB-PAPER-2022-054. - 2023. - 17 p.
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2023-03-08
09:51
Search for $\it{CP}$ violation in $D_{(s)}^{+}\rightarrow K^{-}K^{+}K^{+}$ decays
A search for direct $\it{CP}$ violation in the Cabibbo-suppressed decay $D_{s}^{+}\rightarrow K^{-}K^{+}K^{+}$ and in the doubly Cabibbo-suppressed decay $D^{+}\rightarrow K^{-}K^{+}K^{+}$ is reported. [...]
arXiv:2303.04062 ; LHCb-PAPER-2022-042 ; CERN-EP-2023-010 ; LHCB-PAPER-2022-042. - 2023. - 18 p, 18 p.
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2023-02-22
08:44
Observation of the $B^0_s\rightarrow \chi_{c1}(3872)\pi^+\pi^-$ decay
The first observation of the $B^0_s \rightarrow \left( \chi_{c1}(3872) \rightarrow J/\psi\pi^+\pi^-\right) \pi^+ \pi^-$ decay is reported using proton-proton collision data, corresponding to integrated luminosities of 1, 2 and 6fb$^{-1}$, collected by the LHCb experiment at centre-of-mass energies of 7, 8 and 13TeV, respectively. [...]
arXiv:2302.10629 ; CERN-EP-2023-015 ; LHCb-PAPER-2022-049 ; LHCB-PAPER-2022-049. - 2023. - 18 p.
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2023-02-17
17:09
Measurement of the $\Lambda_{b}^{0}\to \Lambda(1520) \mu^{+}\mu^{-}$ differential branching fraction
The branching fraction of the rare decay $\Lambda_{b}^{0}\to \Lambda(1520) \mu^{+}\mu^{-}$ is measured for the first time, in the squared dimuon mass intervals, $q^2$, excluding the $J/\psi$ and $\psi(2S)$ regions. [...]
arXiv:2302.08262 ; LHCb-PAPER-2022-050 ; CERN-EP-2023-007 ; LHCB-PAPER-2022-050. - 2023. - 16 p.
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2023-02-10
10:23
Observation of new $\Omega_c^{0}$ states decaying to the $\Xi_c^+ K^-$ final state
Two new excited states, $\Omega_c(3185)^0$ and $\Omega_c(3327)^0$, are observed in the $\Xi_c^{+}K^{-}$ invariant-mass spectrum using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of $9\,{\rm fb}^{-1}$. [...]
arXiv:2302.04733 ; CERN-EP-2023-006 ; LHCb-PAPER-2022-043 ; LHCB-PAPER-2022-043. - 2023. - 10 p.
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2023-02-07
10:43
Measurement of the ratios of branching fractions $\mathcal{R}(D^{*})$ and $\mathcal{R}(D^{0})$
The ratios of branching fractions $\mathcal{R}(D^{*})\equiv\mathcal{B}(\bar{B}\to D^{*}\tau^{-}\bar{\nu}_{\tau})/\mathcal{B}(\bar{B}\to D^{*}\mu^{-}\bar{\nu}_{\mu})$ and $\mathcal{R}(D^{0})\equiv\mathcal{B}(B^{-}\to D^{0}\tau^{-}\bar{\nu}_{\tau})/\mathcal{B}(B^{-}\to D^{0}\mu^{-}\bar{\nu}_{\mu})$ are measured, assuming isospin symmetry, using a sample of proton-proton collision data corresponding to 3.0 fb${ }^{-1}$ of integrated luminosity recorded by the LHCb experiment during 2011 and 2012. [...]
arXiv:2302.02886 ; LHCb-PAPER-2022-039 ; CERN-EP-2022-284 ; LHCB-PAPER-2022-039. - 2023. - 20 p.
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2023-01-26
15:26
A study of $C\!P$ violation in the decays $B^\pm\to[K^+K^-\pi^+\pi^-]_D h^{\pm}$ ($h = K, \pi$) and $B^\pm\to[\pi^+\pi^-\pi^+\pi^-]_D h^{\pm}$
The first study of $C\!P$ violation in the decay mode $B^\pm\to[K^+K^-\pi^+\pi^-]_D h^{\pm}$, with $h=K,\pi$, is presented, exploiting a data sample of proton-proton collisions collected by the LHCb experiment that corresponds to an integrated luminosity of $9$ fb$^{-1}$. [...]
arXiv:2301.10328 ; LHCb-PAPER-2022-037 ; CERN-EP-2022-285 ; LHCB-PAPER-2022-037. - 2023. - 28 p.
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2023-01-12
15:46
Evidence of a $J/\psi K_{\rm S}^0$ structure in $B^0 \to J/\psi \phi K_{\rm S}^0$ decays
An amplitude analysis of $B^0 \to J/\psi \phi K_{\rm S}^0$ decays is performed using proton-proton collision data corresponding to an integrated luminosity of 9 ${\rm fb}^{-1}$, collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV. [...]
arXiv:2301.04899 ; LHCb-PAPER-2022-040 ; CERN-EP-2022-258 ; LHCB-PAPER-2022-040. - 2023.
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2023-01-05
14:26
First observation and branching fraction measurement of the $\Lambda_b^0\to D_s^- p$ decay
The first observation of the $\Lambda_b^0\to D_s^- p$ decay is presented using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of ${\sqrt{s}=13 \,\textrm{TeV}}$, corresponding to a total integrated luminosity of $6\,\textrm{fb}^{-1}$. [...]
arXiv:2212.12574 ; LHCb-PAPER-2022-038 ; CERN-EP-2022-272 ; LHCB-PAPER-2022-038. - 2023. - 18 p, 18 p.
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2022-12-20
10:37
Test of lepton universality in $b \rightarrow s \ell^+ \ell^-$ decays
The first simultaneous test of muon-electron universality using $B^{+}\rightarrow K^+\ell^+ \ell^−$ and $B^{0} \rightarrow K^{*0} \ell^{+} \ell^{−}$ decays is performed, in two ranges of the dilepton invariant-mass squared, $q^{2}$. [...]
arXiv:2212.09152 ; LHCb-PAPER-2022-046 ; CERN-EP-2022-277. - 2022. - 15 p, 15 p.
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