# LHCb Papers

2015-08-25
17:26
 Measurement of the time-integrated $CP$ asymmetry in $D^0 \to K^0_S K^0_S$ decays The time-integrated $CP$ asymmetry in the decay $D^0 \to K^0_S K^0_S$ is measured using $3 fb^{-1}$ of proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. [...] CERN-PH-EP-2015-215 ; LHCB-PAPER-2015-030. - 2015. Fulltext - Previous draft version - Related data file(s)

2015-08-18
07:49
 Search for hidden-sector bosons in $B^0 \!\to K^{*0}\mu^+\mu^-$ decays / LHCb collaboration A search is presented for hidden-sector bosons, $\chi$, produced in the decay ${B^0\!\to K^*(892)^0\chi}$, with $K^*(892)^0\!\to K^{+}\pi^{-}$ and $\chi\!\to\mu^+\mu^-$. [...] arXiv:1508.04094 ; CERN-PH-EP-2015-202 ; LHCB-PAPER-2015-036. - 2015. - 21 p. Preprint - Full text - Related data file(s)

2015-08-05
08:25
 Measurement of the $B_s^0 \to \phi \phi$ branching fraction and search for the decay $B^0 \to \phi \phi$ / LHCb collaboration Using a dataset corresponding to an integrated luminosity of 3.0 fb$^{-1}$ collected in $pp$ collisions at centre-of-mass energies of 7 and 8 TeV, the $B_s^0 \to \phi \phi$ branching fraction is measured to be $\mathcal{B}(B_s^0 \to \phi \phi) = ( 1.84 \pm 0.05 (\text{stat}) \pm 0.07 (\text{syst}) \pm 0.11 (f_s/f_d) \pm 0.12 (\text{norm}) ) \times 10^{-5},$ where $f_s/f_d$ represents the ratio of the $B_s^0$ to $B^0$ production cross-sections, and the $B^0 \to \phi K^*(892)^0$ decay mode is used for normalization. [...] arXiv:1508.00788 ; LHCB-PAPER-2015-028 ; CERN-PH-EP-2015-198. - 2015. - 20 p. Preprint - Full text - Related data file(s)

2015-07-30
07:53
 $B$ flavour tagging using charm decays at the LHCb experiment / LHCb collaboration An algorithm is described for tagging the flavour content at production of neutral $B$ mesons in the LHCb experiment. [...] arXiv:1507.07892 ; CERN-PH-EP-2015-193 ; LHCB-PAPER-2015-027. - 2015. - 19 p. Preprint - Full text - Related supplementary data file(s) - Related data file(s)

2015-07-14
08:36
 Measurement of the branching fraction ratio $\mathcal{B}(B_c^+ \rightarrow \psi(2S)\pi^+)/\mathcal{B}(B_c^+ \rightarrow J/\psi \pi^+)$ / LHCb collaboration Using $pp$ collision data collected by LHCb at center-of-mass energies $\sqrt{s}$ = 7 TeV and 8 TeV, corresponding to an integrated luminosity of 3 fb$^{-1}$, the ratio of the branching fraction of the $B_c^+ \rightarrow \psi(2S)\pi^+$ decay relative to that of the $B_c^+ \rightarrow J/\psi\pi^+$ decay is measured to be 0.268 $\pm$ 0.032 (stat) $\pm$ 0.007 (syst) $\pm$ 0.006 (BF). [...] arXiv:1507.03516 ; CERN-PH-EP-2015-167 ; LHCB-PAPER-2015-024. - 2015. - 17 p. Preprint - Full text - Related supplementary data file(s) - Related data file(s)

2015-07-14
08:36
 Observation of $J/\psi p$ resonances consistent with pentaquark states in ${\Lambda_b^0\to J/\psi K^-p}$ decays / LHCb collaboration Observations of exotic structures in the $J/\psi p$ channel, that we refer to as pentaquark-charmonium states, in $\Lambda_b^0\to J/\psi K^- p$ decays are presented. The data sample corresponds to an integrated luminosity of 3/fb acquired with the LHCb detector from 7 and 8 TeV pp collisions. [...] arXiv:1507.03414; CERN-PH-EP-2015-153; LHCB-PAPER-2015-029.- Geneva : CERN, 2015 - 48 p. - Published in : Phys. Rev. Lett. 115 (2015) 072001 Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file: PDF; External link: Preprint

2015-07-02
08:10
 Search for long-lived heavy charged particles using a ring imaging Cherenkov technique at LHCb / LHCb collaboration A search is performed for heavy long-lived charged particles using 3.0 fb$^{-1}$ of pp collisions collected at $\sqrt{s}$= 7 and 8 TeV with the LHCb detector. [...] arXiv:1506.09173 ; CERN-PH-EP-2105-139 ; LHCB-PAPER-2015-002. - 2015. - 24 p. Preprint - Full text - Related data file(s)

2015-06-30
08:05
 Angular analysis and differential branching fraction of the decay $B^0_s\to\phi\mu^+\mu^-$ / LHCb collaboration An angular analysis and a measurement of the differential branching fraction of the decay $B^0_s\to\phi\mu^+\mu^-$ are presented, using data corresponding to an integrated luminosity of $3.0\, {\rm fb}^{-1}$ of $pp$ collisions recorded by the LHCb experiment at $\sqrt{s} = 7$ and $8\, {\rm TeV}$. [...] arXiv:1506.08777 ; CERN-PH-EP-2015-145 ; LHCB-PAPER-2015-023. - 2015. - 37 p. Preprint - Full text - Related data file(s)

2015-06-30
08:05
 First observation of the decay $B_{s}^{0} \to K_{S}^{0} K^{*}(892)^{0}$ / LHCb collaboration A search for $B_{(s)}^{0} \to K_{S}^{0} K^{*}(892)^{0}$ decays is performed using $pp$ collision data, corresponding to an integrated luminosity of $1.0~\text{fb}^{-1}$, collected with the LHCb detector at a centre-of-mass energy of $7~\text{TeV}$. [...] arXiv:1506.08634 ; CERN-PH-EP-2015-144 ; LHCB-PAPER-2015-018. - 2015. - 19 p. Preprint - Full text - Related data files(s)

2015-06-29
17:30
 Measurement of the ratio of branching fractions $\mathcal{B}(\overline{B}^0 \to D^{*+}\tau^{-}\overline{\nu}_{\tau}))/\mathcal{B}(\overline{B}^0 \to D^{*+}\mu^{-}\overline{\nu}_{\mu})$ / LHCb Collaboration The branching fraction ratio $\mathcal{R}(D^{*}) \equiv \mathcal{B}(\overline{B}^0 \to D^{*+}\tau^{-}\overline{\nu}_{\tau})/\mathcal{B}(\overline{B}^0 \to D^{*+}\mu^{-}\overline{\nu}_{\mu})$ is measured using a sample of proton-proton collision data corresponding to 3.0 fb$^{-1}$ of integrated luminosity recorded by the LHCb experiment during 2011 and 2012. [...] arXiv:1506.08614 ; LHCB-PAPER-2015-025 ; CERN-PH-EP-2015-150. - 2015. - 19 p. Previous draft version - Related data file(s) - Full text - Full text - Related supplementary data file(s)