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CERN Document Server 58 records found  1 - 10nextend  jump to record: Search took 1.27 seconds. 
1.
Model-independent confirmation of the $Z(4430)^-$ state / LHCb collaboration
The decay $B^0\to \psi(2S) K^+\pi^-$ is analyzed using $\rm 3~fb^{-1}$ of $pp$ collision data collected with the LHCb detector. A model-independent description of the $\psi(2S) \pi$ mass spectrum is obtained, using as input the $K\pi$ mass spectrum and angular distribution derived directly from data, without requiring a theoretical description of resonance shapes or their interference. [...]
arXiv:1510.01951; CERN-PH-EP-2015-244; LHCB-PAPER-2015-038; CERN-PH-EP-2015-244; LHCB-PAPER-2015-038.- 2015-12-29 - 15 p. - Published in : Phys. Rev. D 92 (2015) 112009 APS Open Access article: PDF; Fulltext: 10.1103_PhysRevD.92.112009 - PDF; arXiv:1510.01951 - PDF; External link: Figures, tables and other information
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2.
Search for the lepton flavour violating decay $\tau^-\to \mu^-\mu^+\mu^-$ / LHCb Collaboration
A search for the lepton flavour violating decay $\tau^-\rightarrow\mu^-\mu^+\mu^-$ is performed with the LHCb experiment. The data sample corresponds to an integrated luminosity of 1.0 fb$^{−1}$ of proton-proton collisions at a centre-of-mass energy of 7 TeV and 2.0 fb$^{−1}$ at 8 TeV. [...]
arXiv:1409.8548; LHCB-PAPER-2014-052; CERN-PH-EP-2014-236; LHCB-PAPER-2014-052; CERN-PH-EP-2014-236.- Geneva : CERN, 2015-02-18 - 19 p. - Published in : JHEP 02 (2015) 121 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; Springer Open Access article: PDF;
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3.
Measurement of the CP-violating phase $\phi_s$ in $\bar{B}^{0}_{s}\to D_{s}^{+}D_{s}^{-}$ decays / LHCb collaboration
We present a measurement of the $CP$-violating weak mixing phase $\phi_s$ using the decay $\bar{B}^{0}_{s}\to D_{s}^{+}D_{s}^{-}$ in a data sample corresponding to $3.0$ fb$^{-1}$ of integrated luminosity collected with the LHCb detector in $pp$ collisions at centre-of-mass energies of 7 and 8 TeV. An analysis of the time evolution of the system, which does not constrain $|\lambda|=1$ to allow for the presence of $CP$ violation in decay, yields $\phi_s = 0.02 \pm 0.17$ (stat) $\pm 0.02$ (syst) rad, $|\lambda| = 0.91^{+0.18}_{-0.15}$ (stat) $\pm0.02$ (syst). [...]
arXiv:1409.4619; LHCB-PAPER-2014-051; CERN-PH-EP-2014-223; LHCB-PAPER-2014-051; CERN-PH-EP-2014-223.- Geneva : CERN, 2014-11-20 - 9 p. - Published in : Phys. Rev. Lett. 113 (2014) 211801 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Preprint
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4.
Measurement of the $\eta_c (1S)$ production cross-section in proton-proton collisions via the decay $\eta_c (1S) \rightarrow p \bar{p}$ / LHCb collaboration
The production of the $\eta_c (1S)$ state in proton-proton collisions is probed via its decay to the $p \bar{p}$ final state with the LHCb detector, in the rapidity range $2.0 < y < 4.5$ and in the meson transverse-momentum range $p_T > 6.5$ GeV/c. The cross-section for prompt production of $\eta_c (1S)$ mesons relative to the prompt $J/\psi$ cross-section is measured, for the first time, to be $\sigma_{\eta_c (1S)}/\sigma_{J/\psi} = 1.74 \pm 0.29 \pm 0.28 \pm 0.18 _{B}$ at a centre-of-mass energy $\sqrt{s} = 7$ TeV using data corresponding to an integrated luminosity of 0.7 fb$^{-1}$, and $\sigma_{\eta_c (1S)}/\sigma_{J/\psi} = 1.60 \pm 0.29 \pm 0.25 \pm 0.17 _{B}$ at $\sqrt{s} = 8$ TeV using 2.0 fb$^{-1}$. [...]
arXiv:1409.3612; LHCB-PAPER-2014-029; CERN-PH-EP-2014-218; LHCB-PAPER-2014-029; CERN-PH-EP-2014-218.- Geneva : CERN, 2015-07-04 - 20 p. - Published in : Eur. Phys. J. C 75 (2015) 311 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
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5.
Measurements of $C\!P$ violation in the three-body phase space of charmless $B^{\pm}$ decays / LHCb Collaboration
Additional abstract: The additional document presents figures of the projections into the two-body invariant masses of the spectra of $B^{\pm} \to K^{\pm}\pi^+\pi^-, B^{\pm} \to K^{\pm}K^+K^-, B^{\pm} \to \pi^{\pm} K^+ K^-$ and $B^{\pm} \to \pi^{\pm} \pi^+ \pi^-$ decays. The figures show additional information related to the CP asymmetry in phase space, for section VII of the article Physical Review D 90, 112004 (2014)..
arXiv:1408.5373; CERN-PH-EP-2014-203; LHCB-PAPER-2014-044; LHCB-PAPER-2014-044; arXiv:1408.5373.- Geneva : CERN, 2014-12-11 - 17 p. - Published in : Phys. Rev. D 90 (2014) 112004 APS Open Access article: PDF; Additional document: PDF; Additional info: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): LHCb-PAPER-2014-044_supplementary - ZIP; LHCb-PAPER-2014-044_AddInfo_figs_v3 - ZIP; External link: Preprint
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6.
Determination of $\gamma$ and $-2\beta_s$ from charmless two-body decays of beauty mesons / LHCb collaboration
Using the latest LHCb measurements of time-dependent $C\!P$ violation in the $B^0_s \to K^+K^-$ decay, a U-spin relation between the decay amplitudes of $B^0_s \to K^+K^-$ and $B^0\to \pi^+\pi^-$ decay processes allows constraints to be placed on the angle $\gamma$ of the unitarity triangle and on the $B^0_s$ mixing phase $-2\beta_s$. Results from an extended approach, which uses additional inputs on $B^0\to \pi^0\pi^0$ and $B^+\to \pi^+\pi^0$ decays from other experiments and exploits isospin symmetry, are also presented. [...]
arXiv:1408.4368; CERN-PH-EP-2014-207; LHCB-PAPER-2014-045; CERN-PH-EP-2014-207; LHCB-PAPER-2014-045.- Geneva : CERN, 2015-02-04 - 11 p. - Published in : Phys. Lett. B 741 (2015) 1 Article from SCOAP3: PDF; Elsevier Open Access article : PDF; Fulltext: arXiv:1408.4368 - PDF; S0370269314008867 - XML; Related data file(s): ZIP;
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7.
Measurement of the forward $W$ boson cross-section in $pp$ collisions at $\sqrt{s} $ = 7 TeV / LHCb collaboration
A measurement of the inclusive $W \to \mu\nu$ production cross-section using data from $pp$ collisions at a centre-of-mass energy of $\sqrt{s} = 7 {\rm \, TeV}$ is presented. The analysis is based on an integrated luminosity of about $1.0 {\rm \, fb}^{-1}$ recorded with the LHCb detector. [...]
arXiv:1408.4354; LHCB-PAPER-2014-033; CERN-PH-EP-2014-175; LHCB-PAPER-2014-033; CERN-PH-EP-2014-175.- Geneva : CERN, 2014-12-10 - 29 p. - Published in : JHEP 12 (2014) 079 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
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8.
Measurement of the CKM angle $\gamma$ using $B^\pm \to D K^\pm$ with $D \to K^0_{\rm S} \pi^+\pi^-, K^0_{\rm S} K^+ K^-$ decays / LHCb Collaboration
A binned Dalitz plot analysis of $B^\pm \to D K^\pm$ decays, with $D \to K^0_{\rm S} \pi^+\pi^-$ and $D \to K^0_{\rm S} K^+ K^-$, is performed to measure the $C\!P$-violating observables $x_{\pm}$ and $y_{\pm}$, which are sensitive to the Cabibbo-Kobayashi-Maskawa angle $\gamma$. The analysis exploits a sample of proton-proton collision data corresponding to 3.0 fb$^{-1}$ collected by the LHCb experiment. [...]
arXiv:1408.2748; LHCB-PAPER-2014-041; CERN-PH-EP-2014-202; LHCB-PAPER-2014-041; CERN-PH-EP-2014-202.- Geneva : CERN, 2014-10-16 - 32 p. - Published in : JHEP 10 (2014) 097 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
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9.
Search for $CP$ violation using $T$-odd correlations in $D^0 \to K^+K^-\pi^+\pi^-$ decays / LHCb collaboration
A search for $CP$ violation using $T$-odd correlations is performed using the four-body $D^0 \to K^+K^-\pi^+\pi^-$ decay, selected from semileptonic $B$ decays. The data sample corresponds to integrated luminosities of $1.0\,\text{fb}^{-1}$ and $2.0\,\text{fb}^{-1}$ recorded at the centre-of-mass energies of 7 TeV and 8 TeV, respectively. [...]
arXiv:1408.1299; CERN-PH-EP-2014-194; LHCB-PAPER-2014-046; CERN-PH-EP-2014-194; LHCB-PAPER-2014-046.- Geneva : CERN, 2014-10-01 - 21 p. - Published in : JHEP 10 (2014) 005 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
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10.
Measurement of the track reconstruction efficiency at LHCb / LHCb collaboration
The determination of track reconstruction efficiencies at LHCb using $J/\psi\rightarrow\mu^{+}\mu^{-}$ decays is presented. Efficiencies above $95\%$ are found for the data taking periods in 2010, 2011, and 2012. [...]
arXiv:1408.1251; CERN-LHCB-DP-2013-002; LHCB-DP-2013-002.- 2015-02-12 - 24 p. - Published in : JINST 10 (2015) P02007 Fulltext: 10.1088_1748-0221_10_02_P02007 - PDF; arXiv:1408.1251 - PDF; IOP Open Access article: PDF; External link: Preprint
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198 Kaballo, M
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