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CERN Document Server 788 records found  1 - 10nextend  jump to record: Search took 0.67 seconds. 
1.
Calibration and performance of the LHCb calorimeters in Run 1 and 2 at the LHC / Abellán Beteta, Carlos (ICC, Barcelona U.) ; Alfonso Albero, A. (ICC, Barcelona U.) ; Amhis, Y. (IJCLab, Orsay) ; Barsuk, S. (IJCLab, Orsay) ; Beigbeder-Beau, C. (IJCLab, Orsay) ; Belyaev, I. (Kurchatov Inst., Moscow) ; Bonnefoy, R. (Clermont-Ferrand U.) ; Breton, D. (IJCLab, Orsay) ; Callot, O. (IJCLab, Orsay) ; Calvo Gomez, M. (ICC, Barcelona U.) et al.
The calibration and performance of the LHCb Calorimeter system in Run 1 and 2 at the LHC are described. [...]
arXiv:2008.11556 ; LHCb-DP-2020-001. - 51 p.
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2.
Dalitz Plot analysis of the $D^+ \to K^- K^+ K^+$ decay / LHCb Collaboration
The resonant structure of the doubly Cabibbo-suppressed decay $D^+\to K^-K^+K^+$ is studied for the first time. The measurement is based on a sample of $pp$-collision data, collected at a centre-of-mass energy of 8 TeV with the LHCb detector and corresponding to an integrated luminosity of 2 fb$^-1$. [...]
arXiv:1902.05884; LHCb-PAPER-2018-039; CERN-EP-2018-336.- Geneva : CERN, 2019-04-08 - 37 p. - Published in : JHEP 04 (2019) 063 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP;
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3.
Measurement of the ratio of branching fractions of the decays $\Lambda_b^0 \!\to \psi(2S) \Lambda$ and $\Lambda_b^0 \!\to J\!/\!\psi \Lambda$ / LHCb Collaboration
Using $pp$ collisions corresponding to 3$\,\text{fb}^{-1}$ integrated luminosity, recorded by the LHCb experiment at centre-of-mass energies of 7 and 8$\,\text{TeV}$, the ratio of branching fractions \begin{align*} \mathcal{B}(\Lambda^0_b\!\to\psi(2S) \Lambda )/\mathcal{B}(\Lambda^0_b\!\to J/\psi \Lambda)= 0.513 \pm 0.023\, (\text{stat}) \pm 0.016 \, (\text{syst}) \pm 0.011\, (\mathcal{B}) \end{align*} is determined. The first uncertainty is statistical, the second is systematic and the third is due to the external branching fractions used..
arXiv:1902.02092; LHCb-PAPER-2017-041; CERN-EP-2019-003.- Geneva : CERN, 2019-03-22 - 16 p. - Published in : JHEP 03 (2019) 126 Article from SCOAP3: PDF; Fulltext: LHCb-Paper-2017-041 - PDF; 1902.02092 - PDF; Related data file(s): ZIP;
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4.
Observation of the doubly Cabibbo-suppressed decay $\Xi_{c}^{+}\to p\phi$ / LHCb Collaboration
The doubly Cabibbo-suppressed decay $\Xi_{c}^{+}\to p\phi$ with $\phi\to K^{+}K^{-}$ is observed for the first time, with a statistical significance of more than fifteen standard deviations. The data sample used in this analysis corresponds to an integrated luminosity of 2 fb$^{-1}$ recorded with the LHCb detector in $pp$ collisions at a centre-of-mass energy of 8 TeV. [...]
arXiv:1901.06222; LHCb-PAPER-2018-040; CERN-EP-2018-349.- 2019-04-10 - 17 p. - Published in : JHEP 04 (2019) 084 Article from SCOAP3: PDF; Fulltext: PDF;
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5.
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$\mbox{fb}^{-1}$. The following results are obtained: \begin{align} \mathcal{B}(B^{+}\rightarrow J/\psi \rho^{+}) &= (3.81 ^{+0.25}_{-0.24} \pm 0.35) \times 10^{-5}, \nonumber \\ \mathcal{A}^{C\!P} (B^{+}\rightarrow J/\psi \rho^{+}) &= -0.045^{+0.056}_{-0.057} \pm 0.008, \nonumber \end{align} where the first uncertainties are statistical and the second systematic. [...]
arXiv:1812.07041; LHCb-PAPER-2018-036; CERN-EP-2018-298; LHCB-PAPER-2018-036.- Geneva : CERN, 2019-06-24 - 21 p. - Published in : Eur. Phys. J. C 79 (2019) 537 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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6.
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. The search is carried out in the region where the lowest of the two $\mu^{+}\mu{-}$ mass combinations is below $980$ MeV/$c^{2}$. [...]
arXiv:1812.06004; CERN-EP-2018-293; LHCb-PAPER-2018-037.- Geneva : CERN, 2019-08-13 - 20 p. - Published in : Eur. Phys. J. C 79 (2019) 675 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP;
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7.
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. The measurement uses a sample of $pp$ collisions recorded by the LHCb experiment during 2011 and 2012, corresponding to an integrated luminosity of 3.0 fb$^{-1}$. [...]
arXiv:1811.08304; LHCb-PAPER-2018-041; CERN-EP-2018-299.- Geneva : CERN, 2019-02-20 - 33 p. - Published in : JHEP 02 (2019) 126 Additional files: ZIP; Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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8.
First Measurement of Charm Production in its 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. The production of $J/\psi$ and $D^0$ mesons is studied with beams of protons of different energies colliding with gaseous targets of helium and argon with nucleon-nucleon centre-of-mass energies of $\sqrt{s_{NN}} = 86.6 $ and $ 110.4$ ${\rm GeV}$, respectively. [...]
arXiv:1810.07907; LHCb-PAPER-2018-023; CERN-EP-2018-266.- Geneva : CERN, 2019-04-03 - 12 p. - Published in : Phys. Rev. Lett. Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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9.
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$^{-1}$. The $\Upsilon (nS)$ mesons are reconstructed through their decays into two opposite-sign muons. [...]
arXiv:1810.07655; LHCb-PAPER-2018-035; CERN-EP-2018-267.- Geneva : CERN, 2018-11-29 - 37 p. Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP;
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10.
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. The $D^0$ mesons are required to originate from semimuonic decays of $B^-$ and $\overline{B}^0$ mesons. [...]
arXiv:1810.06874; CERN-EP-2018-270 and LHCb-PAPER-2018-038; LHCb-PAPER-2018-038; CERN-EP-2018-270; LHCB-PAPER-2018-038.- Geneva : CERN, 2019-01-08 - 10 p. - Published in : 10.1103/PhysRevLett.122.011802 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Figures, tables and other information
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See also: similar author names
534 Lefrancois, J
335 Lefrancois, Jacques
534 Lefrançois, J
104 Lefrançois, J.
335 Lefrançois, Jacques
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