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EP Preprints

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2021-06-09
08:52
Observation of the mass difference between neutral charm-meson eigenstates / LHCb Collaboration
A measurement of mixing and $C\!P$ violation in neutral charm mesons is performed using data reconstructed in proton-proton collisions collected by the LHCb experiment from 2016 to 2018, corresponding to an integrated luminosity of 5.4$\textrm{fb}^{-1}$. [...]
arXiv:2106.03744 ; LHCb-PAPER-2021-009 ; CERN-EP-2021-099 ; LHCB-PAPER-2021-009. - 2021. - 20 p, 20 p.
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2021-05-31
09:00
First measurement of the $CP$-violating phase in $B_s^0\to J/\psi(e^+e^-)\phi$ decays / LHCb Collaboration
A flavour-tagged time-dependent angular analysis of $B^0_s\to J/\psi\phi$ decays is presented where the $J/\psi$ meson is reconstructed through its decay to an $e^+e^-$ pair. [...]
arXiv:2105.14738 ; LHCb-PAPER-2020-042 ; CERN-EP-2021-064 ; LHCB-PAPER-2020-042. - 2021. - 28 p.
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2021-05-31
08:49
Branching fraction measurements of the rare $B^0_s\rightarrow\phi\mu^+\mu^-$ and $B^0_s\rightarrow f_2^\prime(1525)\mu^+\mu^-$ decays / LHCb Collaboration
The branching fraction of the rare $B^0_s\rightarrow\phi\mu^+\mu^-$ decay is measured using data collected by the LHCb experiment at center-of-mass energies of $7$, $8$ and $13\,\rm{TeV}$, corresponding to an integrated luminosity of $9\,{\rm fb}^{-1}$. [...]
arXiv:2105.14007 ; LHCb-PAPER-2021-014 ; CERN-EP-2021-092 ; LHCB-PAPER-2021-014. - 2021. - 22 p.
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2021-05-21
11:32
Search for time-dependent $C\!P$ violation in $D^0 \to K^+ K^-$ and $D^0 \to \pi^+ \pi^-$ decays / LHCb Collaboration
A search for time-dependent violation of the charge-parity symmetry in $D^0 \to K^+ K^-$ and $D^0 \to \pi^+ \pi^-$ decays is performed at the LHCb experiment using proton-proton collision data recorded from 2015 to 2018 at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 6 fb$^{-1}$. [...]
arXiv:2105.09889 ; LHCb-PAPER-2020-045 ; CERN-EP-2021-060 ; LHCB-PAPER-2020-045. - 2021. - 39 p.
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2021-05-18
11:32
Search for the doubly charmed baryon ${\it{\Omega}_{cc}^{+}}$ / LHCb Collaboration
A search for the doubly charmed baryon $\it{\Omega}_{cc}^{+}$ with the decay mode $\it{\Omega}_{cc}^{+}\to\it{\Xi}_c^{+}K^{-}\pi^{+}$ is performed using proton-proton collision data at a centre-of-mass energy of 13$\mathrm{\,Te\kern -0.1em V}$ collected by the LHCb experiment from 2016 to 2018, corresponding to an integrated luminosity of $5.4\,\mathrm{fb}^{-1}$. [...]
arXiv:2105.06841 ; LHCb-PAPER-2021-011 ; CERN-EP-2021-068 ; LHCB-PAPER-2021-011. - 2021. - 22 p, 22 p.
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2021-05-06
15:34
Angular analysis of $B^0 \to D^{*-}D_s^{*+}$ with $D_s^{*+} \to D_s^+ \gamma$ decays / LHCb Collaboration
The first full angular analysis of the $B^0 \to D^{*-} D_s^{*+}$ decay is performed using 6 fb$^{-1}$ of $pp$ collision data collected with the LHCb experiment at a centre-of-mass energy of 13 TeV. [...]
arXiv:2105.02596 ; LHCb-PAPER-2021-006 ; CERN-EP-2021-056 ; LHCB-PAPER-2021-006. - 2021. - 31 p.
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2021-05-05
12:30
Measurement of $CP$ asymmetry in $D^0 \to K^0_S K^0_S$ decays / LHCb Collaboration
A measurement of the $CP$ asymmetry in $D^0 \to K^0_S K^0_S$ decays is reported, based on a data sample of proton-proton collisions collected by the LHCb experiment from 2015 to 2018, corresponding to an integrated luminosity of 6 fb$^{-1}$. [...]
arXiv:2105.01565 ; LHCb-PAPER-2020-047 ; CERN-EP-2021-058 ; LHCB-PAPER-2020-047. - 2021. - 17 p.
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2021-04-19
12:27
Search for the doubly heavy baryons $\it{\Omega}_{bc}^{\rm0}$ and $\it{\Xi}_{bc}^{\rm0}$ decaying to $\it{\Lambda_{c}^{+}\pi^{-}}$ and $\it{\Xi_{c}^{+}\pi^{-}}$ / LHCb Collaboration
The first search for the doubly heavy $\it{\Omega}_{bc}^{\rm0}$ baryon and a search for $\it{\Xi}_{bc}^{\rm0}$ baryon are performed using $pp$ collision data collected with the LHCb experiment from 2016 to 2018 at a centre-of-mass energy of $13TeV$, corresponding to an integrated luminosity of 5.2$fb^{-1}$. [...]
arXiv:2104.04759 ; CERN-EP-2021-046 ; LHCB-PAPER-2021-002. - 2021. - 20 p.
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2021-04-15
11:14
Precise determination of the $B^0_s$-$\overline{B}^0_s$ oscillation frequency / LHCb Collaboration
 Mesons comprising a beauty quark and a strange quark can oscillate between particle (B0s) and antiparticle (B0sbar) flavour eigenstates, with a frequency given by the mass difference between heavy and light mass eigenstates, deltams. [...]
arXiv:2104.04421 ; LHCb-PAPER-2021-005 ; CERN-EP-2021-047 ; LHCB-PAPER-2021-005. - 2021. - 20 p.
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2021-03-22
14:52
Test of lepton universality in beauty-quark decays / LHCb Collaboration
The Standard Model of particle physics currently provides our best description of fundamental particles and their interactions. [...]
arXiv:2103.11769 ; LHCb-PAPER-2021-004 ; CERN-EP-2021-042 ; LHCB-PAPER-2021-004. - 2021. - 36 p.
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