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CERN Document Server 91 records found  1 - 10nextend  jump to record: Search took 0.59 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.
Measurement of the forward $Z$ boson production cross-section in $pp$ collisions at $\sqrt{s}$ = 7 TeV / LHCb collaboration
A measurement of the production cross-section for $Z$ bosons that decay to muons is presented. The data were recorded by the LHCb detector during $pp$ collisions at a centre-of-mass energy of 7 TeV, and correspond to an integrated luminosity of 1.0 fb$^{-1}$ [...]
arXiv:1505.07024; LHCB-PAPER-2015-001; CERN-PH-EP-2015-102; LHCB-PAPER-2015-001; CERN-PH-EP-2015-102.- Geneva : CERN, 2015-08-10 - 41 p. - Published in : JHEP 08 (2015) 039 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; External link: Preprint
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3.
Identification of beauty and charm quark jets at LHCb / LHCb collaboration
Identification of jets originating from beauty and charm quarks is important for measuring Standard Model processes and for searching for new physics. The performance of algorithms developed to select $b$- and $c$-quark jets is measured using data recorded by LHCb from proton-proton collisions at $\sqrt{s}=7$ TeV in 2011 and at $\sqrt{s}=8$ TeV in 2012. [...]
arXiv:1504.07670; LHCB-PAPER-2015-016; CERN-PH-EP-2015-101; LHCB-PAPER-2015-016; CERN-PH-EP-2015-101.- Geneva : CERN, 2015-06-22 - 31 p. - Published in : JINST 10 (2015) P06013 Fulltext: arXiv:1504.07670 - PDF; 10.1088_1748-0221_10_06_P06013 - PDF; IOP Open Access article: PDF; Related data file(s): ZIP; External link: Preprint
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4.
Quantum numbers of the $X(3872)$ state and orbital angular momentum in its $\rho^0 J/\psi$ decays / LHCb collaboration
Angular correlations in $B^+\to X(3872) K^+$ decays, with $X(3872)\to \rho^0 J/\psi$, $\rho^0\to\pi^+\pi^-$ and $J/\psi \to\mu^+\mu^-$, are used to measure orbital angular momentum contributions and to determine the $J^{PC}$ value of the $X(3872)$ meson. The data correspond to an integrated luminosity of 3.0 fb$^{-1}$ of proton-proton collisions collected with the LHCb detector. [...]
arXiv:1504.06339; LHCB-PAPER-2015-015; CERN-PH-EP-2015-098; LHCB-PAPER-2015-015; CERN-PH-EP-2015-098.- Geneva : CERN, 2015-07-30 - 9 p. - Published in : Phys. Rev. D 92 (2015) 011102 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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5.
A study of $CP$ violation in $B^\mp \rightarrow Dh^\mp$ ($h=K,\pi$) with the modes $D \rightarrow K^\mp \pi^\pm \pi^0$, $D \rightarrow \pi^+\pi^-\pi^0$ and $D \rightarrow K^+K^-\pi^0$ / LHCb collaboration
An analysis of the decays of $B^\mp \rightarrow D K^\mp$ and $B^\mp \rightarrow D \pi^\mp $ is presented in which the $D$ meson is reconstructed in the three-body final states $K^\mp \pi^\pm \pi^0$, $\pi^+ \pi^- \pi^0$ and $K^+ K^- \pi^0$. Using data from LHCb corresponding to an integrated luminosity of 3.0~fb$^{-1}$ of $pp$ collisions, measurements of several $CP$ observables are performed. [...]
arXiv:1504.05442; CERN-PH-EP-2015-097; LHCB-PAPER-2015-014; CERN-PH-EP-2015-097-; CERN-PH-EP-2015-097; LHCB-PAPER-2015-014.- Geneva : CERN, 2015-06-26 - 15 p. - Published in : Phys. Rev. D 91 (2015) 112014 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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6.
Till Moritz Karbach, Scientific Legacy / LHCb Collaboration
We are deeply touched by the sudden loss of our dear friend and colleague Till Moritz Karbach. With this memorial book we wish to commemorate Moritz’ scientific legacy, and what Moritz meant to us as a friend..
LHCb-PUB-2015-010; CERN-LHCb-PUB-2015-010.- Geneva : CERN, 2015 - 194 p. Fulltext: PDF;
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7.
Determination of the quark coupling strength $|V_{ub}|$ using baryonic decays / LHCb collaboration
In the Standard Model of particle physics, the strength of the couplings of the $b$ quark to the $u$ and $c$ quarks, $|V_{ub}|$ and $|V_{cb}|$, are governed by the coupling of the quarks to the Higgs boson. Using data from the LHCb experiment at the Large Hadron Collider, the probability for the $\Lambda^0_b$ baryon to decay into the $p \mu^- \overline{\nu}_\mu$ final state relative to the $\Lambda^+_c \mu^- \overline{\nu}_\mu$ final state is measured. [...]
arXiv:1504.01568; CERN-PH-EP-2015-084; LHCB-PAPER-2015-013; CERN-PH-EP-2015-084; LHCB-PAPER-2015-013.- Geneva : CERN, 2015-07-27 - 17 p. - Published in : Nature Phys. 11 (2015) 743-747 Fulltext: PDF; Fulltext from Publisher: PDF; Macmillan Open Access article: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External links: Discovery Magazine article; Nature Research Highlight; Symmetry Magazine article
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8.
First observation and measurement of the branching fraction for the decay $B^0_s \to D_s^{*\mp} K^{\pm}$ / LHCb Collaboration
The first observation of the $B^0_s \to D_s^{*\mp} K^{\pm}$ decay is reported using 3.0$fb^{-1}$ of proton-proton collision data collected by the LHCb experiment. The $D_s^{*\mp}$ mesons are reconstructed through the decay chain $D_s^{*\mp} \to \gamma D_s^{\mp}(K^{\mp}K^{\pm}\pi^{\mp})$. [...]
arXiv:1503.09086; LHCB-PAPER-2015-008; CERN-PH-EP-2015-081; LHCB-PAPER-2015-008; CERN-PH-EP-2015-081.- Geneva : CERN, 2015-06-18 - 17 p. - Published in : JHEP 06 (2015) 130 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: arXiv:1503.09086 - PDF; LHCb-PAP-2015-008-hep-ex - PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
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9.
Observation of the ${B^0 \to \rho^0 \rho^0}$ decay from an amplitude analysis of ${B^0 \to (\pi^+\pi^-)(\pi^+\pi^-)}$ decays / LHCb collaboration
Proton-proton collision data recorded in 2011 and 2012 by the LHCb experiment, corresponding to an integrated luminosity of 3.0 fb$^{-1}$i, are analysed to search for the charmless ${B^0 \to \rho^0 \rho^0}$ decay. More than 600 ${B^0 \to (\pi^+\pi^-)(\pi^+\pi^-)}$ signal decays are selected and used to perform an amplitude analysis from which the ${B^0 \to \rho^0 \rho^0}$ decay is observed for the first time with 7.1 standard deviations significance. [...]
arXiv:1503.07770; LHCB-PAPER-2015-006; CERN-PH-EP-2015-077; LHCB-PAPER-2015-006; CERN-PH-EP-2015-077.- Geneva : CERN, 2015-07-30 - 11 p. - Published in : Phys. Lett. B 747 (2015) 468-478 Article from SCOAP3: PDF; Elsevier Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Preprint
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10.
Observation of the $B^0_s\to\eta'\eta'$ decay / LHCb collaboration
The first observation of the $B^0_s\to\eta'\eta'$ decay is reported. The study is based on a sample of proton-proton collisions corresponding to $3.0$ ${\rm fb^{-1}}$ of integrated luminosity collected with the LHCb detector. [...]
arXiv:1503.07483; LHCB-PAPER-2014-065; CERN-PH-EP-2015-073; LHCB-PAPER-2014-065-; LHCB-PAPER-2014-065; CERN-PH-EP-2015-073.- Geneva : CERN, 2015-07-28 - 9 p. - Published in : Phys. Rev. Lett. 115 (2015) 051801 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
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