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EP Preprints

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2019-01-16
11:27
Model-independent observation of exotic contributions to $B^0\to J/\psi K^+\pi^-$ decays
An angular analysis of $B^0\to J/\psi K^+\pi^-$ decays is performed, using proton-proton collision data corresponding to an integrated luminosity of 3 ${\rm fb}^{-1}$ collected with the LHCb detector. [...]
CERN-EP-2018-330 ; LHCB-PAPER-2018-043. - 2019.
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2018-12-20
11:46
Measurement of the branching fraction and $C\!P$ asymmetry in $B^{+}\rightarrow J/\psi \rho^{+}$ decays / LHCb Collaboration
The branching fraction and direct $C\!P$ asymmetry of the decay $B^{+}\rightarrow J/\psi \rho^{+}$ are measured using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV, corresponding to a total integrated luminosity of 3$\mbox{fb}^{-1}$. [...]
arXiv:1812.07041 ; LHCb-PAPER-2018-036 ; CERN-EP-2018-298 ; LHCB-PAPER-2018-036. - 2018. - 21 p.
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2018-12-19
11:38
Search for the rare decay $B^{+} \rightarrow \mu^{+}\mu^{-}\mu^{+}\nu_{\mu}$ / LHCb Collaboration
A search for the rare leptonic decay $B^{+} \rightarrow \mu^{+}\mu^{-}\mu^{+}\nu_{\mu}$ is performed using proton-proton collision data corresponding to an integrated luminosity of $4.7$ fb$^{-1}$ collected by the LHCb experiment. [...]
arXiv:1812.06004 ; CERN-EP-2018-293 ; LHCb-PAPER-2018-037 ; LHCB-PAPER-2018-037. - 2018. - 20 p.
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2018-12-19
10:18
Study of the $B^0\to \rho(770)^0 K^*(892)^0$ decay with an amplitude analysis of $B^0\to (\pi^+\pi^-) (K^+\pi^-)$ decays / LHCb Collaboration
An amplitude analysis of ${B^0\to (\pi^+\pi^-) (K^+\pi^-)}$ decays is performed in the two-body invariant mass regions ${300 < m(\pi^+\pi^-)<1100}$ MeV/$c^2$, accounting for the $\rho^0$, $\omega$, $f_0(500)$, $f_0(980)$ and $f_0(1370)$ resonances, and ${750 < m(K^+\pi^-)<1200}$ MeV/$c^2$, which is dominated by the $K^{*}(892)^0$ meson. [...]
arXiv:1812.07008 ; LHCb-PAPER-2018-042 ; CERN-EP-2018-316 ; LHCB-PAPER-2018-042. - 2018. - 28 p.
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2018-12-03
12:30
Strategic R&D Programme on Technologies for Future Experiments / Aleksa, Martin (CERN) ; Blomer, Jakob (CERN) ; Cure, Benoit (CERN) ; Campbell, Michael ; D'Ambrosio, Carmelo (CERN) ; Dannheim, Dominik (CERN) ; Doser, Michael (CERN) ; Faccio, Federico (CERN) ; Farthouat, Philippe (CERN) ; Gargiulo, Corrado (CERN) et al.
Instrumentation is a key ingredient for progress in experimental high energy physics [...]
CERN-OPEN-2018-006. - 2018. - 100 p.
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2018-11-22
12:02
Search for $CP$ violation through an amplitude analysis of $D^0\rightarrow K^+ K^- \pi^+ \pi^-$ decays / LHCb Collaboration
A search for $CP$ violation in the Cabibbo-suppressed $D^0\rightarrow K^+ K^- \pi^+ \pi^-$ decay mode is performed using an amplitude analysis. [...]
arXiv:1811.08304 ; LHCb-PAPER-2018-041 ; CERN-EP-2018-299 ; LHCB-PAPER-2018-041. - 2018. - 33 p.
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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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2018-10-12
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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2018-07-30
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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2018-05-28
16:05
A low-cost electrically pulsed shower detector / Conversi, M (CERN) ; Federici, L (INFN) ; Gentile, S (INFN) ; Nardi, M (Laboratorio Gas Ionizzati del CNEN)
A sampling total absorption detector characterized by an extremely low cost and providing also identification of particle tracks has been developed. [...]
CERN-EP-Int-76-20 ; EP-Internal-Report-76-20. - Geneva : CERN, 1976. - 11 p.
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