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CERN Document Server	100 εγγραφές βρέθηκαν 1 - 10 μετάβαση στην εγγραφή:	Η έρευνα πήρε 0.62 δευτερόλεπτα.

Study of $B^{0} \rightarrow D^{*-}\pi^{+}\pi^{-}\pi^{+}$ and $B^{0} \rightarrow D^{*-}K^{+}\pi^{-}\pi^{+}$ decays / LHCb Collaboration
Using proton-proton collision data collected by the LHCb experiment at $\sqrt{s} =$ 7 TeV, corresponding to an integrated luminosity of 1.0 fb$^{-1}$, the ratio of branching fractions of the $B^{0}\rightarrow D^{*-}\pi^{+}\pi^{-}\pi^{+}$ decay relative to the $B^{0} \rightarrow D^{*-}\pi^{+}$ decay is measured to be \begin{equation*} \frac{\mathcal{B}(B^{0}\rightarrow D^{*-}\pi^{+}\pi^{-}\pi^{+})}{\mathcal{B}(B^{0} \rightarrow D^{*-}\pi^{+})} = 2.64 \pm 0.04\,(\text{stat.}) \pm 0.13\,(\text{syst.})\, . \label{eq:CF_BF_ratio_result} \end{equation*} The Cabibbo-suppressed decay $B^{0}\rightarrow D^{*-}K^{+}\pi^{-}\pi^{+}$ is observed for the first time and the measured ratio of branching fractions is \begin{equation*} \frac{\mathcal{B}(B^{0}\rightarrow D^{*-}K^{+}\pi^{-}\pi^{+})}{\mathcal{B}(B^{0} \rightarrow D^{*-}\pi^{+}\pi^{-}\pi^{+})} = (6.47 \pm 0.37\,(\text{stat.}) \pm 0.35\,(\text{syst.})) \times 10^{-2} \label{eq:CS_BF_ratio_result}\, . [...]
arXiv:1303.6861; LHCB-PAPER-2012-046; CERN-PH-EP-2013-041; CERN-EP-PH-2013-041; LHCB-PAPER-2012-046; CERN-PH-EP-2013-041.- Geneva : CERN, 2013-05-03 - 10 p. - Published in : Phys. Rev. D 87 (2013) 092001 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint

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Measurement of the $B^0 \to K^{*0}e^+e^-$ branching fraction at low dilepton mass / LHCb Collaboration
The branching fraction of the rate decay $B^0 \rightarrow K^{*0}e^+e^-$ in the dilepton mass region from 30 to 1000 MeV$/c^2$ has been measured by the LHCb experiment, using $pp$ collision data, corresponding to an integrated luminosity of 1.0 fb$^{-1}$, at a centre-of-mass energy of 7 TeV. The decay mode $B^0 \rightarrow J/\psi(e^+e^-) K^{*0}$ is utilized as a normalization channel. [...]
arXiv:1304.3035; LHCB-PAPER-2013-005; CERN-PH-EP-2013-048; LHCB-PAPER-2013-005-CERN-PH-EP-2013-048; LHCB-PAPER-2013-005; CERN-PH-EP-2013-048.- Geneva : CERN, 2013 - 13 p. - Published in : JHEP 05 (2013) 159 Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint

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Measurements of the branching fractions of $B^{+} \to p \bar{p} K^{+}$ decays / LHCb Collaboration
The branching fractions of the decay $B^{+} \to p \bar p K^{+}$ for different intermediate states are measured using data, corresponding to an integrated luminosity of 1.0 fb$^{-1}$, collected by the LHCb experiment. The total branching fraction, its charmless component $(M_{p\bar p} <2.85 $ $ GeV/c^{2})$ and the branching fractions via the resonant $c\bar c$ states $\eta_{c}(1S)$ and $\psi(2S)$ relative to the decay via a $J/\psi$ intermediate state are \begin{align*} \frac{{\mathcal B}(B^{+} \to p \bar p K^{+})_{total}}{{\mathcal B}(B^{+} \to J/\psi K^{+} \to p \bar p K^{+})}=& \, 4.91 \pm 0.19 \, {(\rm stat)} \pm 0.14 \, {(\rm syst)},\\ \frac{{\mathcal B}(B^{+} \to p \bar p K^{+})_{M_{p\bar p} <2.85 {GeV/}c^{2}}}{{\mathcal B}(B^{+} \to J/\psi K^{+} \to p \bar p K^{+})}=& \, 2.02 \pm 0.10 \, {(\rm stat)}\pm 0.08 \, {(\rm syst)},\\ \frac{{\mathcal B} (B^{+} \to \eta_{c}(1S) K^{+} \to p \bar p K^{+})}{{\mathcal B}(B^{+} \to J/\psi K^{+} \to p \bar p K^{+})} = & \, 0.578 \pm 0.035 \, {(\rm stat)} \pm 0.027 \, {(\rm syst)},\\ \frac{{\mathcal B} (B^{+} \to \psi(2S) K^{+} \to p \bar p K^{+})}{{\mathcal B}(B^{+} \to J/\psi K^{+} \to p \bar p K^{+})}=& \, 0.080 \pm 0.012 \, {(\rm stat)} \pm 0.009 \, {(\rm syst)}.\\ \end{align*} Upper limits on the $B^{+}$ branching fractions into the $\eta_{c}(2S)$ meson and into the charmonium-like states $X(3872)$ and $X(3915)$ are also obtained..
arXiv:1303.7133; LHCB-PAPER-2012-047; CERN-PH-EP-2013-040; LHCB-PAPER-2012-047; CERN-PH-EP-2013-040.- Geneva : CERN, 2013-06-13 - 14 p. - Published in : Eur. Phys. J. C 73 (2013) 2462 Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint

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Prompt charm production in $pp$ collisions at $\sqrt{s}$ = 7 TeV / LHCb Collaboration
Charm production at the LHC in $pp$ collisions at $\sqrt{s}$ = 7 TeV is studied with the LHCb detector. The decays $D^0 \rightarrow K^- \pi^+$, $D^+ \rightarrow K^- \pi^+ \pi^+$, $D^{*+} \rightarrow D^0(K^- \pi^+) \pi^+$, $D^+_{\mathrm{s}} \rightarrow \phi(K^- K^+) \pi^+$, $\Lambda_{\mathrm{c}}^+ \rightarrow p K^- \pi^+$, and their charge conjugates are analysed in a data set corresponding to an integrated luminosity of 15 nb$^{-1}$. [...]
arXiv:1302.2864; LHCB-PAPER-2012-041; CERN-PH-EP-2013-009; LHCB-PAPER-2012-041; CERN-PH-EP-2013-009.- Geneva : CERN, 2013-06-01 - 20 p. - Published in : Nucl. Phys. B 871 (2013) 1-20 Elsevier Open Access article: LHCb-1-20 - PDF; npb.871.1 - PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Rivet analyses reference

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Amplitude analysis and the branching fraction measurement of $\bar{B}^0_s \to J/\psi K^+K^-$ / LHCb Collaboration
An amplitude analysis of the final state structure in the $\overline{B}_s^0 \to J/\psi K^+K^-$ decay mode is performed using $1.0~\rm fb^{-1}$ of data collected by the LHCb experiment in 7 TeV center-of-mass energy $pp$ collisions produced by the LHC. A modified Dalitz plot analysis of the final state is performed using both the invariant mass spectra and the decay angular distributions. [...]
arXiv:1302.1213; LHCB-PAPER-2012-040; CERN-PH-EP-2013-008; LHCB-PAPER-2012-040; CERN-PH-EP-2013-008.- Geneva : CERN, 2013-04-08 - 23 p. - Published in : Phys. Rev. D 87 (2013) 072004 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint

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Measurement of the $\Lambda_b^0$, $\Xi_b^-$ and $\Omega_b^-$ baryon masses / LHCb Collaboration
Bottom baryons decaying to a $J/\psi$ meson and a hyperon are reconstructed using $\rm 1.0~fb^{-1}$ of data collected in 2011 with the LHCb detector. Significant $\Lambda_b^0 \rightarrow J/\psi \Lambda$, $\Xi_b^-\rightarrow J/\psi \Xi^-$ and $\Omega_b^- \rightarrow J/\psi \Omega^-$ signals are observed and the corresponding masses are measured to be \begin{eqnarray} M(\Lambda_b^0) = 5619.53 \pm 0.13 (stat) \pm 0.45 (syst) MeV/c^2, \cr M(\Xi_b^-) = 5795.8 \pm 0.9 (stat) \pm 0.4 (syst) MeV/c^2, \cr M(\Omega_b^-) = 6046.0 \pm 2.2 (stat) \pm 0.5 (syst) MeV/c^2,\end{eqnarray} while the diffierences with respect to the $\Lambda_b^0$ mass are \begin{eqnarray} M(\Xi_b^-) - M(\Lambda_b^0) = 176.2 \pm 0.9 (stat) \pm 0.1 (syst) MeV/c^2, \cr M(\Omega_b^-) - M(\Lambda_b^0) = 426.4 \pm 2.2 (stat) \pm 0.4 (syst) MeV/c^2.\end{eqnarray} These are the most precise mass measurements of the $\Lambda_b^0$, $\Xi_b^-$ and $\Omega_b^-$ baryons to date. [...]
arXiv:1302.1072; CERN-PH-EP-2013-013; LHCB-PAPER-2012-048; CERN-PH-EP-2013-013; LHCB-PAPER-2012-048.- Geneva : CERN, 2013-05-02 - 8 p. - Published in : Phys. Rev. Lett. 110 (2013) 182001 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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Exclusive J/$\psi$ and $\psi$(2S) production in $pp$ collisions at $\sqrt{s} = 7$ TeV / LHCb Collaboration
Exclusive $J/\psi$ and $\psi(2S)$ vector meson production has been observed in the dimuon channel using the LHCb detector. The cross-section times branching fractions to two muons with pseudorapidities between 2.0 and 4.5 are measured to be \begin{equation*} \sigma_{pp\rightarrow J/\psi (\rightarrow \mu^{+} \mu^{-})} (2.0 <\eta_{\mu^{\pm}}< 4.5) = 307 \pm 21 \pm 36~\text{pb}, \end{equation*} \begin{equation*} \sigma_{pp\rightarrow \psi(2S) (\rightarrow \mu^{+} \mu^{-})} (2.0 <\eta_{\mu^{\pm}}< 4.5) = 7.8 \pm 1.3 \pm 1.0~\text{pb}, \end{equation*} where the first uncertainties are statistical and the second are systematic. [...]
arXiv:1301.7084; CERN-PH-EP-2013-005; LHCB-PAPER-2012-044; CERN-PH-EP-2013-005; LHCB-PAPER-2012-044.- Geneva : CERN, 2013 - 17 p. - Published in : J. Phys. G 40 (2013) 045001 IOP Open Access article: PDF; Related data file(s): ZIP; External link: Preprint

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Analysis of the resonant components in $\overline{B}^0 \to J/\psi \pi^+ \pi^-$ / LHCb collaboration
Interpretation of CP violation measurements using charmonium decays, in both the B0 and Bs systems, can be subject to changes due to "penguin" type diagrams. These effects can be investigated using measurements of the Cabibbo-suppressed B0->J/\psi pi+pi- decays. [...]
arXiv:1301.5347; LHCB-PAPER-2012-045; CERN-PH-EP-2013-004; LHCB-PAPER-2012-045; CERN-PH-EP-2013-004.- Geneva : CERN, 2013-03-01 - 21 p. - Published in : Phys. Rev. D 87 (2013) 052001 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint

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Measurement of the fragmentation fraction ratio $f_{s}/f_{d}$ and its dependence on $B$ meson kinematics / LHCb collaboration
The relative production rate of $B^{0}_{s}$ and $B^{0}$ mesons is determined with the hadronic decays $B^{0}_{s} \rightarrow D^{-}_{s}\pi^{+}$ and $B^0 \rightarrow D^{-}K^{+}$. The measurement uses data corresponding to 1.0 fb$^{-1}$ of $pp$ collisions at a centre-of-mass energy of $\sqrt{s}=7$ TeV recorded in the forward region with the LHCb experiment. [...]
arXiv:1301.5286; CERN-PH-EP-2013-006; LHCB-PAPER-2012-037; CERN-PH-EP-2013-006; LHCB-PAPER-2012-037.- Geneva : CERN, 2013 - 18 p. - Published in : JHEP 04 (2013) 001 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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10.

Measurement of $CP$ observables in $B^0\to D K^{*0}$ with $D\to K^+K^-$ / LHCb Collaboration
The decay $B^0 \to D K^{*0}$ and the charge conjugate mode are studied using 1.0${\mathrm fb}^-1$ of $pp$ collision data collected by the LHCb experiment at $\sqrt{s} = 7TeV$ in 2011. The CP asymmetry between the $B^0 \to D K^{*0}$ and the $\bar{B}^0 \to D \bar{K }^{*0}$ decay rates, with the neutral D meson in the CP-even final state $K^+K^-$, is found to be \begin{equation*} {\cal A}_d^{KK} = -0.45 \pm 0.23 \pm 0.02, \end{equation*} where the first uncertainty is statistical and the second is systematic. [...]
arXiv:1212.5205; CERN-PH-EP-2012-362; LHCB-PAPER-2012-042; CERN-PH-EP-2012-362; LHCB-PAPER-2012-042.- Geneva : CERN, 2013 - 10 p. - Published in : JHEP 03 (2013) 067 Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint

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129	Blanks, C
2	Blanks, Christopher
2	Blanks, Christopher George

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