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Study of beauty hadron decays into pairs of charm hadrons / LHCb collaboration
First observations of the decays $\Lambda_b^0 \to \Lambda_c^+ D_{(s)}^-$ are reported using data corresponding to an integrated luminosity of $3\,{\rm fb}^{-1}$ collected at 7 and 8 TeV center-of-mass energy in proton-proton collisions with the LHCb detector. In addition, the most precise measurement of the branching fraction ${\mathcal{B}(B_s^0 \to D^+D_s^-)}$ is made and a search is performed for the decays $B^0_{(s)} \to \Lambda_c^+ \Lambda_c^-$. [...]
arXiv:1403.3606; CERN-PH-EP-2014-033; LHCB-PAPER-2014-002; CERN-PH-EP-2014-033; LHCB-PAPER-2014-002.- Geneva : CERN, 2014-05-21 - 9 p. - Published in : Phys. Rev. Lett. 112 (2014) 202001 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint

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(91)

Precision measurement of the mass and lifetime of the $\Xi_b^0$ baryon / LHCb collaboration
Using a proton-proton collision data sample corresponding to an integrated luminosity of 3 fb$^{-1}$ collected by LHCb at center-of-mass energies of 7 and 8 TeV, about 3800 $\Xi_b^0\to\Xi_c^+\pi^-$, $\Xi_c^+\to pK^-\pi^+$ signal decays are reconstructed. From this sample, the first measurement of the $\Xi_b^0$ baryon lifetime is made, relative to that of the $\Lambda_b^0$ baryon. [...]
arXiv:1405.7223; CERN-PH-EP-2014-107; LHCB-PAPER-2014-021; LHCB-PAPER-2014-021; CERN-PH-EP-2014-107.- Geneva : CERN, 2014-07-15 - 10 p. - Published in : Phys. Rev. Lett. 113 (2014) 032001 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP.ZIP; External link: Preprint

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(79)

Studies of beauty baryon decays to $D^0 ph^-$ and $\Lambda_c^+ h^-$ final states / LHCb collaboration
Decays of beauty baryons to the $D^0 p h^-$ and $\Lambda_c^+ h^-$ final states (where $h$ indicates a pion or a kaon) are studied using a data sample of $pp$ collisions, corresponding to an integrated luminosity of 1.0 fb$^{-1}$, collected by the LHCb detector. The Cabibbo-suppressed decays $\Lambda_b^0\to D^0 p K^-$ and $\Lambda_b^0\to \Lambda_c^+ K^-$ are observed and their branching fractions are measured with respect to the decays $\Lambda_b^0\to D^0 p \pi^-$ and $\Lambda_b^0\to \Lambda_c^+ \pi^-$. [...]
arXiv:1311.4823; CERN-PH-EP-2013-207; LHCB-PAPER-2013-056; CERN-PH-EP-2013-207; LHCB-PAPER-2013-056.- Geneva : CERN, 2014-02-13 - 15 p. - Published in : Phys. Rev. D 89 (2014) 032001 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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(75)

Evidence of $CP$ violation in $B^+\to p\bar{p}K^+$ decays / LHCb Collaboration
Three-body $B^+\to p \overline p K^+$ and $B^+\to p \overline p \pi^+$ decays are studied using a data sample corresponding to an integrated luminosity of 3.0 $fb^{-1}$ collected by the LHCb experiment in proton-proton collisions at center-of-mass energies of $7$ and $8$ TeV. Evidence of $CP$ violation in the $B^+\to p \overline p K^+$ decay is found in regions of the phase space, representing the first measurement of this kind for a final state containing baryons. [...]
arXiv:1407.5907; LHCB-PAPER-2014-034; CERN-PH-EP-2014-173; LHCB-PAPER-2014-034; CERN-PH-EP-2014-173.- Geneva : CERN, 2014-09-29 - 9 p. - Published in : Phys. Rev. Lett. 113 (2014) 141801 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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(72)

Observation of two new $\Xi_b^-$ baryon resonances / LHCb collaboration
Two structures are observed close to the kinematic threshold in the $\Xi_b^0\pi^-$ mass spectrum in a sample of proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb$^{-1}$ recorded by the LHCb experiment. In the quark model, two baryonic resonances with quark content $bds$ are expected in this mass region: the spin-parity $J^P = \frac{1}{2}^+$ and $J^P=\frac{3}{2}^+$ states, denoted $\Xi_b^{\prime -}$ and $\Xi_b^{*-}$. [...]
arXiv:1411.4849; CERN-PH-EP-2014-279; LHCB-PAPER-2014-061; CERN-PH-EP-2014-279; LHCB-PAPER-2014-061.- Geneva : CERN, 2015-02-10 - 9 p. - Published in : Phys. Rev. Lett. 114 (2015) 062004 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External links: Interactions.org article; LHCb website article; Press Release; Symmetry Magazine article

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(70)

Precision measurement of $CP$ violation in $B_s^0 \to J/\psi K^+K^-$ decays / LHCb Collaboration
The time-dependent $CP$ asymmetry in $B_s^0 \to J/\psi K^+K^-$ decays is measured using $pp$ collision data, corresponding to an integrated luminosity of $3.0$fb$^{-1}$, collected with the LHCb detector at centre-of-mass energies of $7$ and $8$TeV. In a sample of 96 000 $B_s^0 \to J/\psi K^+K^-$ decays, the $CP$-violating phase $\phi_s$ is measured, as well as the decay widths $\Gamma_{L}$ and $\Gamma_{H}$ of the light and heavy mass eigenstates of the $B_s^0-\bar{B}_s^0$ system. [...]
arXiv:1411.3104; LHCB-PAPER-2014-059; CERN-PH-EP-2014-271; LHCB-PAPER-2014-059; CERN-PH-EP-2014-271.- Geneva : CERN, 2015-01-30 - 9 p. - Published in : Phys. Rev. Lett. 114 (2015) 041801 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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(69)

First measurement of the charge asymmetry in beauty-quark pair production / LHCb collaboration
The difference in the angular distributions between beauty quarks and antiquarks, referred to as the charge asymmetry, is measured for the first time in $b\bar{b}$ pair production at a hadron collider. The data used correspond to an integrated luminosity of 1.0fb$^{-1}$ collected at 7TeV center-of-mass energy in proton-proton collisions with the LHCb detector. [...]
arXiv:1406.4789; CERN-PH-EP-2014-130; LHCB-PAPER-2014-023; CERN-PH-EP-2014-130; LHCB-PAPER-2014-023.- Geneva : CERN, 2014-08-20 - 9 p. - Published in : Phys. Rev. Lett. 113 (2014) 082003 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint

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(68)

First observation of a baryonic $B_c^+$ decay / LHCb collaboration
A baryonic decay of the $B_c^+$ meson, $B_c^+\to J/\psi p\overline{p}\pi^+$, is observed for the first time, with a significance of $7.3$ standard deviations, in $pp$ collision data collected with the LHCb detector and corresponding to an integrated luminosity of $3.0$ fb$^{-1}$ taken at center-of-mass energies of $7$ and $8$ $\mathrm{TeV}$. With the $B_c^+\to J/\psi \pi^+$ decay as normalization channel, the ratio of branching fractions is measured to be \begin{equation*} \frac{\mathcal{B}(B_c^+\to J/\psi p\overline{p}\pi^+)}{\mathcal{B}(B_c^+\to J/\psi \pi^+)} = 0.143^{\,+\,0.039}_{\,-\,0.034}\,(\mathrm{stat})\pm0.013\,(\mathrm{syst}). [...]
arXiv:1408.0971; CERN-PH-EP-2014-187; LHCB-PAPER-2014-039; CERN-PH-EP-2014-187; LHCB-PAPER-2014-039.- Geneva : CERN, 2014-10-10 - 9 p. - Published in : Phys. Rev. Lett. 113 (2014) 152003 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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(67)

Measurement of resonant and $CP$ components in $\overline{B}_s^0\to J/\psi\pi^+\pi^-$ decays / LHCb Collaboration
The resonant structure of the decay $\overline{B}_s^0\to J/\psi\pi^+\pi^-$ is studied using data corresponding to 3 fb$^{-1}$ of integrated luminosity from $pp$ collisions by the LHC and collected by the LHCb detector. Five interfering $\pi^+\pi^-$ states are required to describe the decay: $f_0(980),~f_0(1500),~f_0(1790),~f_2(1270)$, and $f_2^{\prime}(1525)$. [...]
arXiv:1402.6248; LHCB-PAPER-2013-069; CERN-PH-EP-2014-024; LHCB-PAPER-2013-069; CERN-PH-EP-2014-024.- Geneva : CERN, 2014-05-14 - 21 p. - Published in : Phys. Rev. D 89 (2014) 092006 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint

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Precision measurement of the mass and lifetime of the $\Xi_b^-$ baryon / LHCb collaboration
We report on measurements of the mass and lifetime of the $\Xi_b^-$ baryon using about 1800 $\Xi_b^-$ decays reconstructed in a proton-proton collision data set corresponding to an integrated luminosity of 3.0 fb$^{-1}$ collected by the LHCb experiment. The decays are reconstructed in the $\Xi_b^-\to\Xi_c^0\pi^-$, $\Xi_c^0\to pK^-K^-\pi^+$ channel and the mass and lifetime are measured using the $\Lambda_b^0\to\Lambda_c^+\pi^-$ mode as a reference. [...]
arXiv:1409.8568; LHCB-PAPER-2014-048; CERN-PH-EP-2014-226; LHCB-PAPER-2014-048; CERN-PH-EP-2014-226.- Geneva : CERN, 2014-12-09 - 9 p. - Published in : Phys. Rev. Lett. 113 (2014) 242002 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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