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EP Preprints

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2023-05-26
10:31
Measurement of the mass difference and relative production rate of the $\Omega^-_b$ and $\Xi^-_b$ baryons / LHCb Collaboration
The mass difference between the $\Omega^-_b$ and $\Xi^-_b$ baryons is measured using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of $9 \, \textrm{fb}^{-1}$, and is found to be \begin{equation} m(\Omega^-_b)- m(\Xi^-_b) = 248.54 \pm 0.51 \textrm{(stat)} \pm 0.38 \textrm{(syst)} \, \textrm{MeV}/c^2. [...]
arXiv:2305.15329 ; LHCb-PAPER-2022-053 ; CERN-EP-2023-086. - 2023. - 23 p.
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2023-05-15
11:16
Measurement of $\Xi^{+}_{c}$ production in pPb collisions at $\sqrt{s_{\mathrm{NN}}}=8.16$ TeV at LHCb / LHCb Collaboration
A study of prompt $\Xi_{c}^{+}$ production in proton-lead collisions is performed with the LHCb experiment at a centre-of-mass energy per nucleon pair of 8.16 TeV in 2016 in $p$Pb and Pb$p$ collisions with an estimated integrated luminosity of approximately 12.5 and 17.4 nb$^{-1}$, respectively. [...]
arXiv:2305.06711 ; LHCb-PAPER-2022-041 ; CERN-EP-2023-057. - 2023. - 20 p.
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2023-05-03
08:53
Test of lepton flavour universality using $B^0 \to D^{*-}\tau^+\nu_{\tau}$ decays with hadronic $\tau$ channels / LHCb Collaboration
The branching fraction $\mathcal{B}(B^0 \to D^{*-}\tau^+\nu_\tau)$ is measured relative to that of the normalisation mode $B^0 \to D^{*-}\pi^+\pi^-\pi^+$ using hadronic $\tau^+ \to \pi^+\pi^-\pi^+(\pi^0)\bar{\nu}_\tau$ decays in proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the LHCb experiment, corresponding to an integrated luminosity of 2 fb$^{-1}$. [...]
arXiv:2305.01463 ; LHCb-PAPER-2022-052 ; CERN-EP-2023-062 ; LHCB-PAPER-2022-052. - 2023. - 30 p.
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2023-05-02
10:23
Study of charmonium decays to $K^0_S K \pi$ in the $B \to (K^0_S K \pi) K$ channels / LHCb Collaboration
A study of the $B^+\to K^0_SK^+K^-\pi^+$ and $B^+\to K^0_SK^+K^+\pi^-$ decays is performed using proton-proton collisions at center-of-mass energies of 7, 8 and 13 TeV at the LHCb experiment. [...]
arXiv:2304.14891 ; LHCb-PAPER-2022-051 ; CERN-EP-2023-060 ; LHCB-PAPER-2022-051. - 2023. - 60 p.
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2023-05-02
10:17
Precision measurement of CP violation in the penguin-mediated decay $B_s^{0 } \rightarrow \phi \phi$ / LHCb Collaboration
A flavor-tagged time-dependent angular analysis of the decay $B_s^{0} \rightarrow \phi\phi$ is performed using $pp$ collision data collected by the LHCb experiment at the center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 6fb$^{-1}$. [...]
arXiv:2304.06198 ; LHCb-PAPER-2023-001 ; CERN-EP-2023-042 ; LHCB-PAPER-2023-001. - 2023. - 20 p.
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2023-04-05
14:13
Search for $D^{*}(2007)^0\to\mu^+\mu^-$ in $B^-\to\pi^-\mu^+\mu^-$ decays / LHCb Collaboration
The very rare $D^{*}(2007)^0\to\mu^+\mu^-$ decay is searched for by analysing $B^-\to\pi^-\mu^+\mu^-$ decays. [...]
arXiv:2304.01981 ; LHCb-PAPER-2023-004 ; CERN-EP-2023-050 ; LHCB-PAPER-2023-004. - 2023. - 23 p.
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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. - 19 p.
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2023-03-13
14:57
A low power, high frequency dc-dc converter for generating high voltages / Hubbeling, L
CERN-EP-Internal-Report-78-05. - Geneva : CERN, 1978. - 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.
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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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