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CERN Document Server 342 records found  1 - 10nextend  jump to record: Search took 0.54 seconds. 
1.
Search for decays of neutral beauty mesons into four muons / LHCb Collaboration
A search for the non-resonant decays $B^0_s \rightarrow \mu^{+}\mu^{-}\mu^{+}\mu^{-}$ and $B^0 \rightarrow \mu^{+}\mu^{-}\mu^{+}\mu^{-}$ is presented. The measurement is performed using the full Run 1 data set collected in proton-proton collisions by the LHCb experiment at the LHC. [...]
arXiv:1611.07704; LHCB-PAPER-2016-043; CERN-EP-2016-276.- Geneva : CERN, 2017-03-01 - 19 p. - Published in : JHEP 03 (2017) 001 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; Supplementary information: ZIP; External link: Figures, tables and other information
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2.
Search for Higgs-like bosons decaying into long-lived exotic particles / LHCb collaboration
A search is presented for massive long-lived particles, in the 20-60 GeV mass range with lifetimes between 5 and 100 ps. The dataset used corresponds to 0.62 1\fb of proton-proton collision data collected by the LHCb detector at sqrt(s)=7 TeV. [...]
arXiv:1609.03124; LHCB-PAPER-2016-014; CERN-EP-2016-188; LHCB-PAPER-2016-014; CERN-EP-2016-188.- Geneva : CERN, 2016-12-02 - 29 p. - Published in : Eur. Phys. J. C 76 (2016) 664 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Figures, tables and other information
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3.
Measurement of $CP$ violation in $B^0 \!\rightarrow D^+ D^-$ decays / LHCb collaboration
The $C\!P$ violation observables $S$ and $C$ in the decay channel $B^0 \!\rightarrow D^+ D^-$ are determined from a sample of proton-proton collisions at centre-of-mass energies of $7$ and $8$ TeV, collected by the LHCb experiment and corresponding to an integrated luminosity of $3~ {\text {fb}}^{-1}$. The observable $S$ describes $C\!P$ violation in the interference between mixing and the decay amplitude, and $C$ parametrizes direct $C\!P$ violation in the decay. [...]
arXiv:1608.06620; LHCB-PAPER-2016-037; CERN-EP-2016-203; LHCB-PAPER-2016-037; CERN-EP-2016-203.- Geneva : CERN, 2016-12-23 - 10 p. - Published in : Phys. Rev. Lett. 117 (2016) 261801 APS Open Access article: PDF; Fulltext: arXiv:1608.06620 - PDF; 10.1103_PhysRevLett.117.261801 - PDF; Related data file(s): ZIP; External link: Figures, tables and other information
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4.
Measurement of the CP-violating phase and decay-width difference in $B_s^0\to\psi(2S)\phi$ decays / LHCb collaboration
A time-dependent angular analysis of $B_s^0\to\psi(2S)\phi$ decays is performed using data recorded by the LHCb experiment. The data set corresponds to an integrated luminosity of 3.0\invfb collected during Run 1 of the LHC. [...]
arXiv:1608.04855; CERN-EP-2016-192; LHCB-PAPER-2016-027; LHCB-PAPER-2016-027.- 2016-11-10 - 10 p. - Published in : Phys. Lett. B 762 (2016) 253-262 Article from SCOAP3: PDF; Fulltext: PDF; External link: Figures, tables and other information
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5.
Measurement of forward $W\to e\nu$ production in $pp$ collisions at $\sqrt{s}=8$ TeV / LHCb collaboration
A measurement of the cross-section for $W \to e\nu$ production in $pp$ collisions is presented using data corresponding to an integrated luminosity of $2\,$fb$^{-1}$ collected by the LHCb experiment at a centre-of-mass energy of $\sqrt{s}=8\,$TeV. The electrons are required to have more than $20\,$GeV of transverse momentum and to lie between 2.00 and 4.25 in pseudorapidity. [...]
arXiv:1608.01484; LHCB-PAPER-2016-024; CERN-EP-2016-179; LHCB-PAPER-2016-024; CERN-EP-2016-179.- Geneva : CERN, 2016-10-07 - 29 p. - Published in : JHEP 10 (2016) 030 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; Springer Open Access article: PDF; External link: Figures, tables and other information
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6.
Search for the suppressed decays $B^{+}\rightarrow K^{+}K^{+}\pi^{-}$ and $B^{+}\rightarrow \pi^{+}\pi^{+}K^{-}$ / LHCb Collaboration
A search is made for the highly-suppressed B meson decays $B^{+}\rightarrow K^{+}K^{+}\pi^{-}$ and $B^{+}\rightarrow \pi^{+}\pi^{+}K^{-}$ using a data sample corresponding to an integrated luminosity of 3.0 $fb^{-1}$ collected by the LHCb experiment in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV. No evidence is found for the decays, and upper limits at 90\% confidence level are determined to be $\mathcal{B}(B^{+}\rightarrow K^{+}K^{+}\pi^{-}) < 1.1\times 10^{-8}$ and $\mathcal{B}(B^{+}\rightarrow \pi^{+}\pi^{+}K^{-}) < 4.6\times 10^{-8}$..
arXiv:1608.01478; LHCB-PAPER-2016-023; CERN-EP-2016-177.- Geneva : CERN, 2017-02-10 - 10 p. - Published in : Phys. Lett. B 765 (2017) 307-316 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
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7.
Amplitude analysis of $B^- \to D^+ \pi^- \pi^-$ decays / LHCb Collaboration
The Dalitz plot analysis technique is used to study the resonant substructures of $B^- \to D^+ \pi^- \pi^-$ decays in a data sample corresponding to 3.0 fb$^-1$ of $pp$ collision data recorded by the LHCb experiment during 2011 and 2012. A model-independent analysis of the angular moments demonstrates the presence of resonances with spins 1, 2 and 3 at high $D^+\pi^-$ mass. [...]
arXiv:1608.01289; CERN-EP-2016-184; LHCB-PAPER-2016-026; LHCB-PAPER-2016-026; CERN-EP-2016-184.- Geneva : CERN, 2016-10-05 - 23 p. - Published in : Phys. Rev. D 94 (2016) 072001 APS Open Access article: PDF; Fulltext: 10.1103_PhysRevD.94.072001 - PDF; arXiv:1608.01289 - PDF; Related data file(s): ZIP; External link: Figures, tables and other information
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8.
Measurement of the ratio of branching fractions $\mathcal{B}(B_{c}^{+} \to J/\psi K^{+})/\mathcal{B}(B_{c}^{+} \to J/\psi\pi^{+})$ / LHCb collaboration
The ratio of branching fractions $R_{K/\pi} \equiv \mathcal{B}(B_{c}^{+} \to J/\psi K^{+})/\mathcal{B}(B_{c}^{+} \to J/\psi\pi^{+})$ is measured with $pp$ collision data collected by the LHCb experiment at centre-of-mass energies of 7 TeV and 8 TeV, corresponding to an integrated luminosity of 3${\mbox{fb}^{-1}}$. It is found to be $ R_{K/\pi} = 0.079\pm0.007\pm0.003$, where the first uncertainty is statistical and the second is systematic. [...]
arXiv:1607.06823; LHCB-PAPER-2016-020; CERN-EP-2016-173; LHCB-PAPER-2016-020; CERN-EP-2016-173.- Geneva : CERN, 2016-09-27 - 16 p. - Published in : JHEP 09 (2016) 153 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Figures, tables and other information
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9.
Observation of $\eta_{c}(2S) \to p \bar p$ and search for $X(3872) \to p \bar p$ decays / LHCb collaboration
The first observation of the decay $\eta_{c}(2S) \to p \bar p$ is reported using proton-proton collision data corresponding to an integrated luminosity of $3.0\rm \, fb^{-1}$ recorded by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The $\eta_{c}(2S)$ resonance is produced in the decay $B^{+} \to [c\bar c] K^{+}$ [...]
arXiv:1607.06446; CERN-EP-2016-175; LHCB-PAPER-2016-016.- 2017-06-10 - 9 p. - Published in : Phys. Lett. B 769 (2017) 305-313 Article from SCOAP3: PDF; Fulltext: PDF; External link: Figures, tables and other information
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10.
Measurement of the $B_{s}^{0} \rightarrow J/\psi \eta$ lifetime / LHCb collaboration
Using a data set corresponding to an integrated luminosity of $3 fb^{-1}$, collected by the LHCb experiment in $pp$ collisions at centre-of-mass energies of 7 and 8 TeV, the effective lifetime in the $B^0_s \rightarrow J/\psi \eta$ decay mode, $\tau_{\textrm{eff}}$, is measured to be $\tau_{\textrm{eff}} = 1.479 \pm 0.034~\textrm{(stat)} \pm 0.011 ~\textrm{(syst)}$ ps. Assuming $CP$ conservation, $\tau_{\textrm{eff}}$ corresponds to the lifetime of the light $B_s^0$ mass eigenstate. [...]
arXiv:1607.06314; CERN-EP-2016-166; LHCB-PAPER-2016-017.- Geneva : CERN, 2016-11-10 - 9 p. - Published in : Phys. Lett. B 762 (2016) 484-492 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Figures, tables and other information
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