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CERN Document Server 148 Datensätze gefunden  1 - 10nächsteEnde  gehen zum Datensatz: Die Suche hat 1.11 Sekunden gedauert. 
1.
A precise measurement of the $B^0$ meson oscillation frequency / LHCb collaboration
The oscillation frequency, $\Delta m_d$, of $B^0$ mesons is measured using semileptonic decays with a $D^-$ or $D^{*-}$ meson in the final state, in a data sample of $pp$ collisions collected by the LHCb detector corresponding to an integrated luminosity of 3.0$\mbox{fb}^{-1}$. A combination of the two decay modes gives $\Delta m_d = (505.0 \pm 2.1 \pm 1.0) \rm \,ns^{-1}$, where the first uncertainty is statistical and the second is systematic. [...]
arXiv:1604.03475; LHCB-PAPER-2015-031; CERN-EP-2016-084; LHCB-PAPER-2015-031; CERN-EP-2016-084.- Geneva : CERN, 2016-07-21 - 27 p. - Published in : Eur. Phys. J. C 76 (2016) 412 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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2.
Measurement of $C\!P$ observables in $B^\pm \rightarrow D K^\pm$ and $B^\pm \rightarrow D \pi^\pm$ with two- and four-body $D$ decays / LHCb collaboration
Measurements of $C\!P$ observables in $B^\pm \rightarrow D K^\pm$ and $B^\pm \rightarrow D \pi^\pm$ decays are presented where the $D$ meson is reconstructed in the final states $K^\pm\pi^\mp$, $\pi^\pm K^\mp$, $K^+K^-$, $\pi^+\pi^-$, $K^\pm\pi^\mp \pi^+ \pi^-$, $\pi^\pm K^\mp \pi^+ \pi^-$ and $\pi^+ \pi^- \pi^+ \pi^-$. This analysis uses a sample of charged $B$ mesons from $pp$ collisions collected by the LHCb experiment in 2011 and 2012, corresponding to an integrated luminosity of 3.0 fb$^{-1}$. [...]
arXiv:1603.08993; LHCB-PAPER-2016-003; CERN-EP-2016-065; LHCB-PAPER-2016-003; CERN-EP-2016-065.- Geneva : CERN, 2016-09-10 - 15 p. - Published in : Phys. Lett. B 76 (2016) 117-131 Article from SCOAP3: PDF; Elsevier Open Access article: 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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3.
Search for $B_c^+$ decays to the $p\overline p\pi^+$ final state / LHCb collaboration
A search for the decays of the $B_c^+$ meson to $p\overline p\pi^+$ is performed for the first time using a data sample corresponding to an integrated luminosity of 3.0 $\mathrm{fb}^{-1}$ collected by the LHCb experiment in $pp$ collisions at centre-of-mass energies of $7$ and $8$ TeV. No signal is found and an upper limit, at 95$\%$ confidence level, is set, $\frac{f_c}{f_u}\times\mathcal{B}(B_c^+\to p\overline p\pi^+)<3.6\times10^{-8}$ in the kinematic region $m(p\overline p)<2.85\mathrm{\,Ge\kern -0.1em V\!/}c^2$, $p_{\rm T}(B)<20\mathrm{\,Ge\kern -0.1em V\!/}c$ and $2.0< {y}(B)<4.5$, where $\mathcal{B}$ is the branching fraction and $f_c$ ($f_u$) is the fragmentation fraction of the $b$ quark into a $B_c^+$ ($B^+$) meson..
arXiv:1603.07037; CERN-EP-2016-072; LHCB-PAPER-2016-001; LHCB-PAPER-2016-001; CERN-EP-2016-072.- Geneva : CERN, 2016-08-10 - 9 p. - Published in : Phys. Lett. B 759 (2016) 313-321 Article from SCOAP3: PDF; Elsevier Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Figures, tables and other information
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4.
Observation of $ \Lambda_b^0 \to \psi(2S)pK^-$ and $ \Lambda_b^0 \to J/\psi \pi^+ \pi^- pK^-$ decays and a measurement of the $\Lambda_b^0$ baryon mass / LHCb collaboration
The decays $ \Lambda_b^0 \to \psi(2S)pK^-$ and $ \Lambda_b^0 \to J/\psi \pi^+ \pi^- pK^-$ are observed in a data sample corresponding to an integrated luminosity of 3fb$^{-1}$, collected in proton-proton collisions at 7 and 8TeV centre-of-mass energies by the LHCb detector. The $\psi(2S)$ mesons are reconstructed through the decay modes $\psi(2S)\to\mu^+\mu^-$ and $\psi(2S)\to J/\psi\pi^+\pi^-$ [...]
arXiv:1603.06961; CERN-EP-2016-070; LHCB-PAPER-2015-060; CERN-EP-2016-070; LHCB-PAPER-2015-060.- Geneva : CERN, 2016-05-23 - 20 p. - Published in : JHEP 05 (2016) 132 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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5.
Search for violations of Lorentz invariance and $CPT$ symmetry in $B^0_{(s)}$ mixing / LHCb collaboration
Violations of $ CPT$ symmetry and Lorentz invariance are searched for by studying interference effects in $ B^0$ mixing and in $ B^0_s$ mixing. Samples of $ B^0\to J/\psi K^0_{\mathrm{S}}$ and $ B^0_s\to J/\psi K^+ K^-$ decays are recorded by the LHCb detector in proton--proton collisions at centre-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb$^{-1}$. [...]
arXiv:1603.04804; CERN-EP-2016-048; LHCB-PAPER-2016-005; CERN-EP-2016-048; LHCB-PAPER-2016-005.- Geneva : CERN, 2016-06-15 - 10 p. - Published in : Phys. Rev. Lett. 116 (2016) 241601 APS Open Access article: PDF; Fulltext: arXiv:1603.04804 - PDF; 10.1103_PhysRevLett.116.241601 - PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Figures, tables and other information
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6.
Observation of the $\Lambda_b^0\to\Lambda\phi$ decay / LHCb collaboration
The $\Lambda_b^0\to\Lambda\phi$ decay is observed using data corresponding to an integrated luminosity of 3.0fb$^{-1}$ recorded by the LHCb experiment. The decay proceeds at leading order via a $b\to s\bar{s}s$ loop transition and is therefore sensitive to the possible presence of particles beyond the Standard Model. [...]
arXiv:1603.02870; LHCB-PAPER-2016-002; CERN-EP-2016-047; LHCB-PAPER-2016-002; CERN-EP-2016-047.- Geneva : CERN, 2016-08-10 - 11 p. - Published in : Phys. Lett. B 759 (2016) 282-292 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Figures, tables and other information
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7.
Observation of $B^0_s\to\bar{D}^0 K^0_S$ and evidence for $B^0_s\to\bar{D}^{*0} K^0_S$ decays / LHCb Collaboration
The first observation of the $B^0_s\to\bar{D}^0 K^0_S$ decay mode and evidence for the $B^0_s\to\bar{D}^{*0} K^0_S$ decay mode are reported. The data sample corresponds to an integrated luminosity of 3.0 $\text{fb}^{-1}$ collected in $pp$ collisions by LHCb at center-of-mass energies of 7 and 8 TeV. [...]
arXiv:1603.02408; CERN-EP-2016-053; LHCB-PAPER-2015-050; LHCB-PAPER-2015-050; CERN-EP-2016-053.- Geneva : CERN, 2016-04-21 - 9 p. - Published in : Phys. Rev. Lett. 116 (2016) 161802 APS Open Access article: PDF; Fulltext: 10.1103_PhysRevLett.116.161802 - PDF; arXiv:1603.02408 - PDF; Related data file(s): ZIP; External link: Figures, tables and other information
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8.
Observations of $\Lambda_b^0 \to \Lambda K^+\pi^-$ and $\Lambda_b^0 \to \Lambda K^+K^-$ decays and searches for other $\Lambda_b^0$ and $\Xi_b^0$ decays to $\Lambda h^+h^{\prime -}$ final states / LHCb collaboration
A search is performed for the charmless three-body decays of the $\Lambda_b^0$ and $\Xi_b^0$ baryons to the final states $\Lambda h^+h^{\prime -}$, where $h^{(\prime)} = \pi$ or $K$. The analysis is based on a data sample, corresponding to an integrated luminosity of $3 \rm fb^{-1}$ of $pp$ collisions, collected by the LHCb experiment. [...]
arXiv:1603.00413; CERN-EP-2016-038; LHCB-PAPER-2016-004; CERN-EP-2016-038; LHCB-PAPER-2016-004.- Geneva : CERN, 2016-05-13 - 24 p. - Published in : JHEP 05 (2016) 081 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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9.
Measurement of the $B_{s}^{0} \rightarrow D_{s}^{(*)+}D_{s}^{(*)-}$ branching fractions / LHCb collaboration
The branching fraction of the decay $B_{s}^{0} \rightarrow D_{s}^{(*)+}D_{s}^{(*)-}$ is measured using $pp$ collision data corresponding to an integrated luminosity of $1.0fb^{-1}$, collected using the LHCb detector at a centre-of-mass energy of $7$TeV. It is found to be \begin{align*} {\mathcal{B}}(B_{s}^{0}\rightarrow~D_{s}^{(*)+}D_{s}^{(*)-}) = (3.05 \pm 0.10 \pm 0.20 \pm 0.34)\%, \end{align*} where the uncertainties are statistical, systematic, and due to the normalisation channel, respectively. [...]
arXiv:1602.07543; CERN-EP-2016-028; LHCB-PAPER-2015-053; CERN-EP-2016-028; LHCB-PAPER-2015-053.- Geneva : CERN, 2016-05-20 - 11 p. - Published in : Phys. Rev. D 93 (2016) 092008 APS Open Access article: PDF; Fulltext: 10.1103_PhysRevD.93.092008 - PDF; arXiv:1602.07543 - PDF; Related data file(s): ZIP; External link: Figures, tables and other information
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10.
A new algorithm for identifying the flavour of $B_s^0$ mesons at LHCb / LHCb collaboration
A new algorithm for the determination of the initial flavour of $B_s^0$ mesons is presented. The algorithm is based on two neural networks and exploits the $b$ hadron production mechanism at a hadron collider. [...]
arXiv:1602.07252; LHCB-PAPER-2015-056; CERN-EP-2016-030; LHCB-PAPER-2015-056; CERN-EP-2016-030.- Geneva : CERN, 2016-05-17 - 26 p. - Published in : JINST 11 (2016) P05010 Fulltext: 10.1088_1748-0221_11_05_P05010 - PDF; arXiv:1602.07252 - PDF; IOP Open Access article: PDF; Preprint: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Figures, tables and other information
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