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CERN Document Server 找到 157 筆記錄  1 - 10下一個最後  跳到記錄: 檢索需時 0.90 秒. 
1.
Differential branching fraction and angular moments analysis of the decay $B^0 \to K^+ \pi^- \mu^+ \mu^-$ in the $K^*_{0,2}(1430)^0$ region / LHCb collaboration
Measurements of the differential branching fraction and angular moments of the decay $B^0 \to K^+ \pi^- \mu^+ \mu^-$ in the $K^*_{0,2}(1430)^0$ in the $K^+\pi^-$ invariant mass range $1330 < m (K^+ \pi^-) <1530~ \text{MeV}/c^2$ are presented. Proton-proton collision data are used, corresponding to an integrated luminosity of 3 fb$^{-1}$ collected by the LHCb experiment. [...]
arXiv:1609.04736; CERN-EP-2016-215; LHCB-PAPER-2016-025; CERN-EP-2016-215; LHCB-PAPER-2016-025.- Geneva : CERN, 2016-12-15 - 23 p. 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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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 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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4.
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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5.
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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6.
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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7.
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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8.
Measurement of the forward Z boson production cross-section in pp collisions at $\sqrt{s} = 13$ TeV / LHCb Collaboration
A measurement of the production cross-section of Z bosons in pp collisions at $\sqrt{s} = 13$ TeV is presented using dimuon and dielectron final states in LHCb data. The cross-section is measured for leptons with pseudorapidities in the range $2.0 < \eta < 4.5$, transverse momenta $p_\text{T} > 20$ GeV and dilepton invariant mass in the range $ 60 < m(\ell\ell)<120$ GeV [...]
arXiv:1607.06495; LHCB-PAPER-2016-021; CERN-EP-2016-170; LHCB-PAPER-2016-021; CERN-EP-2016-170.- Geneva : CERN, 2016-09-21 - 35 p. - Published in : JHEP 09 (2016) 136 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.
Study of $B^+_c$ decays to the $K^+K^-\pi^+$ final state and evidence for the decay $B^+_c\to\chi_{c0}\pi^+$ / LHCb Collaboration
A study of $B_c^+\to K^+K^-\pi^+$ decays is performed for the first time using data 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. Evidence for the decay $B_c^+\to\chi_{c0}(\to K^+K^-)\pi^+$ is reported with a significance of 4.0 standard deviations, resulting in the measurement of $\frac{\sigma(B_c^+)}{\sigma(B^+)}\times\mathcal{B}(B_c^+\to\chi_{c0}\pi^+)$ to be $(9.8^{+3.4}_{-3.0}(\mathrm{stat})\pm 0.8(\mathrm{syst}))\times 10^{-6}$. [...]
arXiv:1607.06134; CERN-EP-2016-176; LHCB-PAPER-2016-022; LHCB-PAPER-2016-022; CERN-EP-2016-176.- Geneva : CERN, 2016-11-30 - 10 p. - Published in : Phys. Rev. D 94 (2016) 091102 APS Open Access article: PDF; Fulltext: arXiv:1607.06134 - PDF; 10.1103_PhysRevD.94.091102 - PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Figures, tables and other information
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10.
Amplitude analysis of $B^+\to J/\psi \phi K^+$ decays / LHCb collaboration
The first full amplitude analysis of $B^+\to J/\psi \phi K^+$ with $J/\psi\to\mu^+\mu^-$, $\phi\to K^+K^-$ decays is performed with a data sample of 3 fb$^{-1}$ of $pp$ collision data collected at $\sqrt{s}=7$ and $8$ TeV with the LHCb detector. The data cannot be described by a model that contains only excited kaon states decaying into $\phi K^+$, and four $J/\psi\phi$ structures are observed, each with significance over $5$ standard deviations. [...]
arXiv:1606.07898; LHCB-PAPER-2016-019; CERN-EP-2016-156; LHCB-PAPER-2016-019; CERN-EP-2016-156.- Geneva : CERN, 2017-01-11 - 28 p. - Published in : Phys. Rev. D 95 (2017) 012002 Fulltext: 10.1103_PhysRevD.95.012002 - PDF; arXiv:1606.07898 - PDF; Related data file(s): ZIP; External link: Preprint
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