LHCb Conference Contributions

2019-05-17
11:08
 Search for time-dependent $CP$ violation in $D^0 \to K^+ K^-$ and $D^0 \to \pi^+ \pi^-$ decays /LHCb Collaboration A search for charge-parity ($CP$) violation in the time-dependent decay rates of $D^0 \to K^+ K^-$ and $D^0 \to \pi^+ \pi^-$ decays is reported. The data correspond to an integrated luminosity of $1.9\,{\rm fb}^{-1}$ collected by the LHCb detector in 2015--2016 in $pp$ collisions at a centre-of-mass energy of $13\,{\rm TeV}$ [...] LHCb-CONF-2019-001; CERN-LHCb-CONF-2019-001.- Geneva : CERN, 2019 - 29. Fulltext: LHCb-CONF-2019-001 - PDF; LHCb-CONF-2019-001-figs - ZIP;

2018-12-04
10:08
 Prospects for searches for long-lived particles after the LHCb detector upgrades /LHCb Collaboration The LHCb detector is a single-arm forward spectrometer covering the pseudorapidity range $2 < \eta < 5$, initially designed for the study of particles containing $b$ or $c$ quarks. As such, it is naturally suited for the search of beyond SM long-lived particles in a range of mass and lifetime not too dissimilar to heavy-flavour hadrons, as it has been demonstrated in several publications [...] LHCb-CONF-2018-006; CERN-LHCb-CONF-2018-006.- Geneva : CERN, 2018 - 12. Fulltext: LHCb-CONF-2018-006 - PDF; LHCb_CONF_2018_006_figures - ZIP;

2018-11-22
16:50
 LHCb projections for proton-lead collisions during LHC Runs 3 and 4 /LHCb Collaboration Projected sensitivities for selected LHCb measurements using proton-lead collisions during LHC Runs 3 and 4 are presented. The observables considered are Drell-Yan production with dimuon masses between 5 and 120 $GeV/c^2$ , correlations in the production of $D$ and $\overline D$ mesons, and the nuclear modification factor of $B^+$ meson production [...] LHCb-CONF-2018-005; CERN-LHCb-CONF-2018-005.- Geneva : CERN, 2018 - 20. Fulltext: LHCb-CONF-2018-005 - PDF; ZIP - ZIP;

2018-10-04
11:08
 Measurement of $B^+$, $B^0$ and $\Lambda_b^0$ production and nuclear modification in $p$Pb collisions at $\sqrt{s_\mathrm{NN}}=8.16 ~~\text {TeV}$ /LHCb Collaboration The production of $B^+$, $B^0$ and $\Lambda^0_b$ hadrons is studied in proton-lead collisions at a centre-of-mass energy per nucleon pair of $\sqrt{s_\mathrm{NN}}=8.16~~\text {TeV}$ with the LHCb detector at the LHC. The measurement uses an integrated luminosity of $12.2\pm0.3\mathrm{nb}^{-1}$ for the proton beam projecting into the LHCb detector (positive rapidity) and $18.6\pm0.5\mathrm{nb}^{-1}$ for the lead beam projecting into the LHCb detector (negative rapidity). [...] LHCb-CONF-2018-004; CERN-LHCb-CONF-2018-004.- Geneva : CERN, 2018 - 24. Fulltext: LHCb-CONF-2018-004 - PDF; LHCb-CONF-2018-004-figs - ZIP; In : Hard Probes 2018: International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions, Aix-les-bains, France, 1 - 5 Oct 2018

2018-05-25
14:17
 Study of coherent $J/\psi$ production in lead-lead collisions at $\sqrt{s_{\rm NN}} =5\ \rm{TeV}$ with the LHCb experiment /LHCb Collaboration Coherent production of $J\psi$ mesons is studied in lead-lead collision data at a nucleon-nucleon centre-of-mass energy of $5 \ \rm{TeV}$ collected by the LHCb experiment. The data set corresponds to an integrated luminosity of about $10 \mu b^{-1}$. [...] LHCb-CONF-2018-003; CERN-LHCb-CONF-2018-003.- Geneva : CERN, 2018 - 12. Fulltext: LHCb-CONF-2018-003-Supplementary - ZIP; LHCb-CONF-2018-003-Figs - ZIP; LHCb-CONF-2018-003 - PDF; In : The 27th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions , Venice, Italy, 13 - 19 May 2018

2018-05-22
15:04
 Update of the LHCb combination of the CKM angle $\gamma$ /LHCb Collaboration A combination of tree-level measurements of the CKM angle $\gamma$ at LHCb is performed. The results are obtained from time-integrated measurements of $B^{+}\to D K^{+}$, $B^{+}\to D^{*}K^{+}$, $B^{+}\to DK^{*+}$, $B^{0}\to D K^{*0}$, $B^{0}\to D K^{+}\pi^{-}$ and $B^{+}\to DK^{+}\pi^{+}\pi^{-}$ decays and time-dependent analyses of $B_{s}^{0}\to D_{s}^{\mp}K^{\pm}$ and $B^{0}\to D^{\mp}\pi^{\pm}$ decays. [...] LHCb-CONF-2018-002; CERN-LHCb-CONF-2018-002.- Geneva : CERN, 2018 - 29. Fulltext: LHCb-CONF-2018-002-figures - ZIP; LHCb-CONF-2018-002 - PDF; In : The 17th International Conference on B-Physics at Frontier Machines, Isola D'elba, Italy, 6 - 11 May 2018

2018-04-20
09:45
 Measurement of CP violation in the $B_s^0 \to \phi \phi$ decay and search for the $B^0 \to \phi\phi$ decay /LHCb Collaboration A measurement of the time-dependent $CP$-violating asymmetry in $B_s^0 \to \phi\phi$ decays is presented, along with measurements of the $T$-odd triple-product asymmetries. Using a sample of proton-proton collision data corresponding to an integrated luminosity of $5.0 fb^{-1}$ collected with the LHCb detector, a signal yield of approximately 8500 $B_s^0 \to \phi\phi$ decays is obtained. [...] LHCb-CONF-2018-001; CERN-LHCb-CONF-2018-001.- Geneva : CERN, 2018 - 25. Fulltext: CDSFigs - ZIP; LHCb-CONF-2018-001 - PDF; In : 53rd Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 10 - 17 Mar 2018

2017-09-05
09:59
 Prompt $\Lambda^+_{\mathrm{c}}$ production in $p\mathrm{Pb}$ collisions at $\sqrt{s_{_{\mathrm{NN}}}} = 5.02\mathrm{\,Te\kern -0.1em V}$ /LHCb Collaboration Production of prompt $\Lambda^+_{\mathrm{c}}$ baryons is studied in proton-lead and lead-proton collisions collected with the LHCb detector at the LHC. The data sample corresponds to an integrated luminosity of $1.58\pm0.02~\mbox{nb}^{-1}$ recorded at a nucleon-nucleon centre-of-mass energy of $\sqrt{s_{_{\mathrm{NN}}}}=5.02\mathrm{\,Te\kern -0.1em V}$ [...] LHCb-CONF-2017-005; CERN-LHCb-CONF-2017-005.- Geneva : CERN, 2017 - 21. Fulltext: figuresCONF NOTE - ZIP; LHCb-CONF-2017-005 - PDF; In : 17th International Conference on Strangeness in Quark Matter, Utrecht, The Netherlands, 10 - 15 Jul 2017

2017-07-26
15:11
 Update of the LHCb combination of the CKM angle $\gamma$ using $B\to DK$ decays /LHCb Collaboration A combination of tree-level measurements of the CKM angle $\gamma$ from $B \to DK$ decays at LHCb is performed. The results are obtained from time-integrated measurements of $B^+\to D K^+$, $B^+ \to D^* K^+$, $B^+ \to D K^{*+}$, $B^0 \to D K^{*0}$, $B^0 \to D K^+ \pi^-$ and $B^+ \to D K^+ \pi^+ \pi^-$ decays. [...] LHCb-CONF-2017-004; CERN-LHCb-CONF-2017-004.- Geneva : CERN, 2017 - 22. Fulltext: LHCb-CONF-2017-004-figures - ZIP; LHCb-CONF-2017-004 - PDF; In : 2017 European Physical Society Conference on High Energy Physics, Venice, Italy, 05 - 12 Jul 2017

2017-04-24
11:43
 Measurement of antiproton production in $p$He collisions at $\sqrt{s_{\scriptscriptstyle\rm NN}}=110$ GeV /LHCb Collaboration The antiproton production cross-section in collisions of a 6.5 TeV LHC proton beam on helium at rest is measured by the LHCb experiment using the SMOG internal gas target from a dataset corresponding to an integrated luminosity of 0.4 $\text{nb}^{-1}$. This is the first direct measurement of antimatter production in $p$He collisions, and has important implications for the interpretation of recent results from the PAMELA and AMS-02 experiments, which measure the antiproton component in cosmic rays outside of the Earth's atmosphere.. LHCb-CONF-2017-002; CERN-LHCb-CONF-2017-002.- Geneva : CERN, 2017 - 26. Fulltext: LHCb-CONF-2017-002_Figs - ZIP; LHCb-CONF-2017-002 - PDF; In : 52nd Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 18 - 25 Mar 2017