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The LHCb upgrade I / LHCb Collaboration
The LHCb upgrade represents a major change of the experiment. The detectors have been almost completely renewed to allow running at an instantaneous luminosity five times larger than that of the previous running periods. [...]
arXiv:2305.10515; LHCb-DP-2022-002.- 2024-05-23 - 232 p. - Published in : JINST 19 (2024) P05065 Fulltext: 2305.10515 - PDF; document - PDF;
In : The Large Hadron Collider and The Experiments for Run 3

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Search for $CP$ violation in $\Xi_c^+\rightarrow pK^-\pi^+$ decays using model-independent techniques / LHCb Collaboration
A first search for $CP$ violation in the Cabibbo-suppressed $\Xi_c^+\rightarrow pK^-\pi^+$ decay is performed using both a binned and an unbinned model-independent technique in the Dalitz plot. The studies are based on a sample of proton-proton collision data, corresponding to an integrated luminosity of $3.0~\rm fb^{-1}$, and collected by the LHCb experiment at centre-of-mass energies of $7$ and $8~\rm TeV$. [...]
arXiv:2006.03145; CERN-EP-2020-069; LHCb-PAPER-2019-026; LHCB-PAPER-2019-026.- Geneva : CERN, 2020-10-26 - 16 p. - Published in : Eur. Phys. J. C 80 (2020) 986 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP;

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Measurement of the shape of the $ {B}_s^0\to {D}_s^{\ast -}{\mu}^{+}{\nu}_{\mu } $ differential decay rate / LHCb Collaboration
The shape of the $B_s^0\rightarrow D_s^{*-}\mu^+\nu_{\mu}$ differential decay rate is obtained as a function of the hadron recoil using proton-proton collision data at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 1.7 fb$^{-1}$ collected by the LHCb detector. The $B_s^0\rightarrow D_s^{*-}\mu^+\nu_{\mu}$ decay is reconstructed through the decays $D_s^{*-}\rightarrow D_s^{-}\gamma$ and $D_s^{-}\rightarrow K^-K^+\pi^-$. [...]
arXiv:2003.08453; LHCb-PAPER-2019-046; CERN-EP-2020-026; LHCB-PAPER-2019-046.- Geneva : CERN, 2020-12-22 - 32 p. - Published in : JHEP 2012 (2020) 144 Article from SCOAP3: PDF; Fulltext: LHCb-PAPER-2019-046 - PDF; 2003.08453 - PDF; Related data files: ZIP; Supplementary material: ZIP;

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Search for the lepton flavour violating decay $B^+ \rightarrow K^+ \mu^- \tau^+$ using $B_{s2}^{*0}$ decays / LHCb Collaboration
A search is presented for the lepton flavour violating decay $B^+ \rightarrow K^+ \mu^- \tau^+$ using a sample of proton--proton collisions at centre-of-mass energies of 7, 8, and 13 TeV, collected with the LHCb detector and corresponding to a total integrated luminosity of 9 fb${}^{-1}$. The $\tau$ leptons are selected inclusively, primarily via decays with a single charged particle. [...]
arXiv:2003.04352; LHCb-PAPER-2019-043; CERN-EP-2020-020; LHCB-PAPER-2019-043.- Geneva : CERN, 2020-06-22 - 19 p. - Published in : JHEP 2006 (2020) 129 Article from SCOAP3: PDF; Fulltext: LHCb-PAPER-2019-043 - PDF; 2003.04352 - PDF; Related data file(s): ZIP;

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Measurement of $CP$ observables in $B^\pm \to D K^\pm$ and $B^\pm \to D \pi^\pm$ with $D \to K_{\rm{S}}^0 K^\pm \pi^\mp$ decays / LHCb Collaboration
Measurements of $CP$ observables in $B^\pm \to D K^\pm$ and $B^\pm \to D \pi^\pm$ decays are presented, where $D$ represents a superposition of $D^0$ and $\bar{D}^0$ states. The $D$ meson is reconstructed in the three-body final state $K_{\rm{S}}^0 K^\pm \pi^\mp$. [...]
arXiv:2002.08858; LHCB-PAPER-2019-044; LHCB-PAPER-2019-044-003; LHCb-PAPER-2019-044; CERN-EP-2020-015; LHCB-PAPER-2019-044.- Geneva : CERN, 2020-06-08 - 26 p. Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP;

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Measurement of the branching fraction of the decay $B_s^0\to K_S^0 K_S^0$ / LHCb Collaboration
A measurement of the branching fraction of the decay $B_s^0 \to K_S^0 K_S^0$ is performed using proton-proton collision data corresponding to an integrated luminosity of 5 fb$^{-1}$ collected by the LHCb experiment between 2011 and 2016. The branching fraction is determined to be$$ \mathcal{B}(B_s^0 \to K_S^0 K_S^0) = [8.3 \pm 1.6 (\rm{stat}) \pm 0.9 (\rm{syst}) \pm 0.8 (\rm{norm}) \pm 0.3 (f_s/f_d)] \times 10^{-6}, $$ where the first uncertainty is statistical, the second is systematic, and the third and fourth are due to uncertainties on the $B^0 \to \phi K_S^0$ branching fraction and the ratio of hadronization fractions $f_s/f_d$ [...]
arXiv:2002.08229; LHCb-PAPER-2019-030; CERN-EP-2020-008; LHCB-PAPER-2019-030.- Geneva : CERN, 2020-08-01 - 15 p. - Published in : Phys. Rev. D 102 (2020) 012011 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP;

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Observation of a new baryon state in the $\Lambda_b^0\pi^+\pi^-$ mass spectrum / LHCb Collaboration
A new baryon state is observed in the $\Lambda_b^0\pi^+\pi^-$ mass spectrum with high significance using a data sample of $pp$ collisions, collected with the LHCb detector at centre-of-mass energies $\sqrt{s}=7, 8$ and $13$ TeV, corresponding to an integrated luminosity of 9 fb$^{-1}$. The mass and natural width of the new state are measured to be \begin{eqnarray*} m & = & 6072.3 \pm 2.9 \pm 0.6 \pm 0.2 MeV\,, \\ \Gamma & = & 72 \pm 11 \pm 2 MeV\,, \end{eqnarray*} where the first uncertainty is statistical and the second systematic. [...]
arXiv:2002.05112; CERN-EP-2020-013; LHCb-PAPER-2019-045; LHCB-PAPER-2019-045.- Geneva : CERN, 2020-06-23 - 24 p. - Published in : JHEP 2006 (2020) 136 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;

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Strong constraints on the $K^0_{\mathrm{S}}\rightarrow\mu^{+}\mu^{-}$ branching fraction / LHCb Collaboration
A search for the decay $K^0_{\mathrm{S}}\rightarrow\mu^{+}\mu^{-}$ is performed using proton-proton collision data, corresponding to an integrated luminosity of $5.6\,\text{fb}^{-1}$ and collected with the LHCb experiment during 2016, 2017 and 2018 at a center-of-mass energy of $13\,\mathrm{TeV}$. The observed signal yield is consistent with zero, yielding an upper limit of ${\cal B}(K^0_{\mathrm{S}}\rightarrow\mu^{+}\mu^{-}) < 2.2 \times 10^{-10}$ at 90% CL. [...]
arXiv:2001.10354; LHCb-PAPER-2019-038; CERN-EP-2019-285; LHCb-PAPER-2019-038 CERN-EP-2019-285.- Geneva : CERN, 2020-12-03 - 10 p. - Published in : Phys. Rev. Lett. 125 (2020) 231801 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;

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Measurement of $|V_{cb}|$ with $B_s^0 \to D_s^{(*)-} \mu^+ \nu_{\mu}$ decays / LHCb Collaboration
The element $|V_{cb}|$ of the Cabibbo-Kobayashi-Maskawa matrix is measured using semileptonic $B_s^0$ decays produced in proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb$^{-1}$. Rates of $B_s^0 \to D_s^{-} \mu^+ \nu_{\mu}$ and $B_s^0 \to D_s^{*-} \mu^+ \nu_{\mu}$ decays are analyzed using hadronic form-factor parametrizations derived either by Caprini, Lellouch and Neubert (CLN) or by Boyd, Grinstein and Lebed (BGL). [...]
arXiv:2001.03225; LHCb-PAPER-2019-041; CERN-EP-2019-282; LHCB-PAPER-2019-041.- Geneva : CERN, 2020-04-21 - 25 p. - Published in : Phys. Rev. D 101 (2020) 072004 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary material: ZIP;

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First observation of excited $\Omega_b^-$ states / LHCb Collaboration
We report four narrow peaks in the $\Xi_b^0K^-$ mass spectrum obtained using $pp$ collisions at center-of-mass energies of 7, 8 and 13 TeV, corresponding to a total integrated luminosity of 9 fb$^{-1}$ recorded by the LHCb experiment. Referring to these states by their mass, the mass values are \begin{align*} m(\Omega_b(6316)^-) &= 6315.64\pm0.31\pm0.07\pm0.50 {\rm MeV}, \\ m(\Omega_b(6330)^-) &= 6330.30\pm0.28\pm0.07\pm0.50 {\rm MeV}, \\ m(\Omega_b(6340)^-) &= 6339.71\pm0.26\pm0.05\pm0.50 {\rm MeV}, \\ m(\Omega_b(6350)^-) &= 6349.88\pm0.35\pm0.05\pm0.50 {\rm MeV}, \end{align*}where the uncertainties are statistical, systematic and the last is due to the knowledge of the $\Xi_b^0$ mass. [...]
arXiv:2001.00851; LHCb-PAPER-2019-042; CERN-EP-2019-278; LHCB-PAPER-2019-042.- Geneva : CERN, 2020-02-26 - 12 p. - Published in : Phys. Rev. Lett. 124 (2020) 082002 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;

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Vegeu també: autors amb noms similars
3	Girard, O
2	Girard, O G
1	Girard, O.
7	Girard, Olivier
309	Girard, Olivier Goran
1	Girard, Olivier G{\"o}ran
1	Girard, Olivier G{ö}ran
309	Girard, Olivier Göran

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