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EP Preprints

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2018-10-22
15:42
First measurement of charm production in fixed-target configuration at the LHC / LHCb Collaboration
The first measurement of heavy-flavour production by the LHCb experiment in its fixed-target mode is presented. [...]
arXiv:1810.07907 ; LHCb-PAPER-2018-023 ; CERN-EP-2018-266 ; LHCB-PAPER-2018-023. - 2018. - 21 p.
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2018-10-18
14:47
Study of $\Upsilon$ production in $p$Pb collisions at $\sqrt{s_{NN}}=8.16$ TeV / LHCb Collaboration
The production of $\Upsilon(nS)$ mesons ($n=1,2,3$) in $p$Pb and Pb$p$ collisions at a centre-of-mass energy per nucleon pair $\sqrt{s_{NN}}=8.16$ TeV is measured by the LHCb experiment, using a data sample corresponding to an integrated luminosity of 31.8 nb$^{-1}$. [...]
arXiv:1810.07655 ; LHCb-PAPER-2018-035 ; CERN-EP-2018-267 ; LHCB-PAPER-2018-035. - 2018. - 37 p.
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2018-10-17
15:45
Measurement of the charm-mixing parameter $y_{CP}$ / LHCb Collaboration
A measurement of the charm-mixing parameter $y_{CP}$ using $D^0 \to K^+ K^-$, $D^0 \to \pi^+ \pi^-$, and $D^0 \to K^- \pi^+$ decays is reported. [...]
arXiv:1810.06874 ; LHCb-PAPER-2018-038 ; CERN-EP-2018-270 ; LHCB-PAPER-2018-038. - 2018. - 15 p.
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2018-10-12
13:40
Measurement of the branching fractions of the decays $D^+\rightarrow K^-K^+K^+$, $D^+\rightarrow \pi^-\pi^+K^+$ and $D^+_s\rightarrow\pi^-K^+K^+$ / LHCb Collaboration
The branching fractions of the doubly Cabibbo-suppressed decays $D^+\rightarrow K^-K^+K^+$, $D^+\rightarrow \pi^-\pi^+K^+$ and $D^+_s\rightarrow\pi^-K^+K^+$ are measured using the decays $D^+\rightarrow K^-\pi^+\pi^+$ and $D^+_s+\rightarrow K^-K^+\pi^+$ as normalisation channels. [...]
arXiv:1810.03138 ; LHCb-PAPER-2018-033 ; CERN-EP-2018-244 ; LHCB-PAPER-2018-033. - 2018. - 22 p.
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2018-10-05
14:01
Observation of two resonances in the $\Lambda_b^0 \pi^\pm$ systems and precise measurement of $\Sigma_b^\pm$ and $\Sigma_b^{*\pm}$ properties / LHCb Collaboration
The first observation of two structures consistent with resonances in the final states $\Lambda_b^0 \pi^-$ and $\Lambda_b^0 \pi^+$ is reported using samples of $pp$ collision data collected by the LHCb experiment at $\sqrt{s} = 7$ and $8$ TeV, corresponding to an integrated luminosity of 3 $\mathrm{fb}^{-1}$. [...]
arXiv:1809.07752 ; LHCb-PAPER-2018-032 ; CERN-EP-2018-243 ; LHCB-PAPER-2018-032. - 2018. - 16 p.
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2018-09-21
11:55
Evidence for an $\eta_c(1S) \pi^-$ resonance in $B^0 \to \eta_c(1S) K^+\pi^-$ decays / LHCb Collaboration
A Dalitz plot analysis of $B^0 \to \eta_c(1S) K^+\pi^-$ decays is performed using data samples of $pp$ collisions collected with the LHCb detector at centre-of-mass energies of $\sqrt{s}=7,~8$ and $13$ TeV, corresponding to a total integrated luminosity of $4.7 \text{fb}^{-1}$. [...]
arXiv:1809.07416 ; LHCb-PAPER-2018-034 ; CERN-EP-2018-245 ; LHCB-PAPER-2018-034. - 2018. - 39 p.
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2018-08-24
11:51
Search for lepton-flavour-violating decays of Higgs-like bosons / LHCb Collaboration
A search is presented for a Higgs-like boson with mass in the range 45 to 195 GeV/$c^2$ decaying into a muon and a tau lepton. [...]
arXiv:1808.07135 ; CERN-EP-2018-210 ; LHCb-PAPER-2018-030 ; LHCB-PAPER-2018-030. - 2018. - 20 p.
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2018-08-21
10:21
Measurement of antiproton production in ${\rm p He}$ collisions at $\sqrt{s_{NN}}=110$ GeV / LHCb Collaboration
The cross-section for prompt antiproton production in collisions of protons with an energy of $6.5$ TeV incident on helium nuclei at rest is measured with the LHCb experiment from a data set corresponding to an integrated luminosity of $0.5 ~~\rm nb^{-1}$. [...]
arXiv:1808.06127 ; LHCb-PAPER-2018-031 ; CERN-EP-2018-217 ; LHCB-PAPER-2018-031. - 2018. - 22 p.
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2018-07-30
16:01
Measurement of the relative $B^{-} \rightarrow D^{0} / D^{*0} / D^{**0} \mu^{-} \overline{\nu}_\mu$ branching fractions using $B^{-}$ mesons from $\overline{B}{}_{s2}^{*0}$ decays / LHCb Collaboration
The decay of the narrow resonance $\overline{B}{}_{s2}^{*0}\!\rightarrow B^- K^+$ can be used to determine the $B^-$ momentum in partially reconstructed decays without any assumptions on the decay products of the $B^-$ meson. [...]
arXiv:1807.10722 ; LHCb-PAPER-2018-024 ; CERN-EP-2018-190 ; LHCB-PAPER-2018-024. - 2018. - 27 p.
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2018-06-11
15:02
Central exclusive production of $J/\psi$ and $\psi(2S)$ mesons in $pp$ collisions at $\sqrt{s}=13~$TeV / LHCb Collaboration
Measurements are reported of the central exclusive production of $J/\psi$ and $\psi(2S)$ mesons in $pp$ collisions at a centre-of-mass energy of 13$\ \rm {TeV}$. [...]
LHCb-PAPER-2018-011 ; arXiv:1806.04079 ; CERN-EP-2018-152 ; arXiv:1806.04079 ; LHCB-PAPER-2018-011. - 2018. - 27 p.
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