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Updated search for long-lived particles decaying to jet pairs / LHCb Collaboration
A search is presented for long-lived particles with a mass between 25 and 50 GeV/

$c^2$ and a lifetime between 2 and 500 ps, using proton-proton collision data corresponding to an integrated luminosity of 2.0 fb

$^{-1}$ , collected by the LHCb detector at centre-of-mass energies of 7 and 8 TeV. The particles are assumed to be pair-produced in the decay of a 125 GeV/

$c^2$ Standard-Model-like Higgs boson. [...]
arXiv:1705.07332; LHCB-PAPER-2016-065; CERN-EP-2017-083.- Geneva : CERN, 2017-11-29 - 23 p. - Published in : Eur. Phys. J. C Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Figures, tables and other information

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The 40 MHz trigger-less DAQ for the LHCb Upgrade / Campora Perez, D H (INFN, CNAF) ; Falabella, A (CERN) ; Galli, D (OCEM, Bologna ; Bologna U.) ; Giacomini, F (CERN) ; Gligorov, V (INFN, CNAF) ; Manzali, M (Bologna U. ; Ferrara U.) ; Marconi, U (OCEM, Bologna) ; Neufeld, N (INFN, CNAF) ; Otto, A (INFN, CNAF) ; Pisani, F (INFN, CNAF ; Rome U.) et al.
The LHCb experiment will undergo a major upgrade during the second long shutdown (2018–2019), aiming to let LHCb collect an order of magnitude more data with respect to Run 1 and Run 2. The maximum readout rate of 1 MHz is the main limitation of the present LHCb trigger. [...]
2016 - 4 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 824 (2016) 280-283
In : Frontier Detectors for Frontier Physics: 13th Pisa Meeting on Advanced Detectors, La Biodola, Isola D'elba, Italy, 24 - 30 May 2015, pp.280-283

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Measurement of $B^0$ , $B^0_s$ , $B^+$ and $\Lambda^0_b$ production asymmetries in 7 and 8 TeV proton-proton collisions / LHCb Collaboration
The

$B^0$ ,

$B^0_s$ ,

$B^+$ and

$\Lambda^0_b$ hadron production asymmetries are measured 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. The measurements are performed as a function of transverse momentum and rapidity of the

$b$ hadrons within the LHCb detector acceptance. [...]
arXiv:1703.08464; CERN-EP-2017-036; LHCB-PAPER-2016-062.- Geneva : CERN, 2017-11-10 - 20 p. - Published in : Phys. Lett. B 774 (2017) 139-158 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Figures, tables and other information

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Measurement of the $B^0_s\to\mu^+\mu^-$ branching fraction and effective lifetime and search for $B^0\to\mu^+\mu^-$ decays / LHCb Collaboration
A search for the rare decays

$B^0_s\to\mu^+\mu^-$ and

$B^0\to\mu^+\mu^-$ is performed at the LHCb experiment using data collected in

$pp$ collisions corresponding to a total integrated luminosity of 4.4 fb

$^{-1}$ . An excess of

$B^0_s\to\mu^+\mu^-$ decays is observed with a significance of 7.8 standard deviations, representing the first observation of this decay in a single experiment. [...]
arXiv:1703.05747; CERN-EP-2017-041; LHCB-PAPER-2017-001.- Geneva : CERN, 2017-05-11 - 11 p. - Published in : Phys. Rev. Lett. 118 (2017) 191801 APS Open Access Article: PDF; Fulltext: 10.1103_PhysRevLett.118.191801 - PDF; arXiv:1703.05747 - PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Figures, tables and other information

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Observation of the decay $B_{s}^{0} \to \eta_{c} \phi$ and evidence for $B_{s}^{0} \to \eta_{c} \pi^{+} \pi^{-}$ / LHCb Collaboration
A study of

$B^{0}_{s} \to \eta_{c} \phi$ and

$B^{0}_{s} \to \eta_{c} \pi^{+}\pi^{-}$ decays is performed using

$pp$ collision data corresponding to an integrated luminosity of 3.0

$\,\rm fb^{-1}$ , collected with the LHCb detector in Run~1 of the LHC. The observation of the decay

$B^{0}_{s} \to \eta_{c} \phi$ is reported, where the

$\eta_{c}$ meson is reconstructed in the

$p\bar p$ ,

$K^+K^-\pi^+\pi^-$ ,

$\pi^+\pi^-\pi^+\pi^-$ and

$K^+K^-K^+K^-$ decay modes and the

$\phi(1020)$ in the

$K^+ K^-$ decay mode. [...]
arXiv:1702.08048; CERN-EP-2017-026; LHCB-PAPER-2016-056.- 2017-07-05 - 30 p. - Published in : JHEP 07 (2017) 021 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; External link: Figures, tables and other information

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Observation of the decay $\Lambda^0_b \to p K^- \mu^+ \mu^-$ and a search for $C\!P$ violation / LHCb Collaboration
A search for

$C\!P$ violation in the decay

$\Lambda^0_b \to p K^- \mu^+ \mu^-$ is presented. This decay is mediated by flavour-changing neutral-current transitions in the Standard Model and is potentially sensitive to new sources of

$C\!P$ violation. [...]
arXiv:1703.00256; LHCB-PAPER-2016-059; CERN-EP-2017-032.- Geneva : CERN, 2017-06-21 - 17 p. - Published in : JHEP 1706 (2017) 108 Article from SCOAP3: scoap3-fulltext - PDF; scoap - 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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Measurement of the $C\!P$ violation parameter $A_\Gamma$ in $D^0 \to K^+K^-$ and $D^0 \to \pi^+\pi^-$ decays / LHCb Collaboration
Asymmetries in the time-dependent rates of

$D^0 \to K^+K^-$ and

$D^0 \to \pi^+\pi^-$ decays are measured in a

$pp$ collision data sample collected with the LHCb detector during LHC Run 1, corresponding to an integrated luminosity of

$3\,\mathrm{fb}^{-1}$ . The asymmetries in effective decay widths between

$D^0$ and

$\overline{D}^0$ decays, sensitive to indirect

$CP$ violation, are measured to be

$A_\Gamma(K^+ K^-) = (-0.30 \pm 0.32 \pm 0.10)\times 10^{-3}$ and

$A_\Gamma(\pi^+\pi^-) = (0.46 \pm 0.58 \pm 0.12)\times 10^{-3}$ , where the first uncertainty is statistical and the second systematic. [...]
arXiv:1702.06490; LHCB-PAPER-2016-063; CERN-EP-2017-028.- Geneva : CERN, 2017-06-28 - 9 p. - Published in : Phys. Rev. Lett. 118 (2017) 261803 APS Open Access Article: PDF; Fulltext: arXiv:1702.06490 - PDF; 10.1103_PhysRevLett.118.261803 - PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Figures, tables and other information

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Expression of Interest for a Phase-II LHCb Upgrade: Opportunities in flavour physics, and beyond, in the HL-LHC era / LHCb Collaboration
A Phase-II Upgrade is proposed for the LHCb experiment in order to take full advantage of the flavour-physics opportunities at the HL-LHC, and other topics that can be studied with a forward spectrometer. [...]
CERN-LHCC-2017-003. - 2017. - 64 p.
Fulltext

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Observation of the suppressed decay $\Lambda^{0}_{b}\rightarrow p\pi^{-}\mu^{+}\mu^{-}$ / LHCb Collaboration
The suppressed decay

$\Lambda^{0}_{b}\rightarrow p\pi^{-}\mu^{+}\mu^{-}$ , excluding the

$J/\psi$ and

$\psi(2S)\rightarrow \mu^{+}\mu^{-}$ resonances, is observed for the first time with a significance of 5.5 standard deviations. The analysis is performed with proton-proton collision data corresponding to an integrated luminosity of

$3\mathrm{fb}^{-1}$ collected with the LHCb experiment. [...]
arXiv:1701.08705; LHCB-PAPER-2016-049; CERN-EP-2016-312.- Geneva : CERN, 2017-04-06 - 16 p. - Published in : JHEP 04 (2017) 029 Article from SCOAP3: scoap3-fulltext - PDF; scoap - 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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10.

Study of the $D^0 p$ amplitude in $\Lambda_b^0\to D^0 p \pi^-$ decays / LHCb Collaboration
An amplitude analysis of the decay

$\Lambda_b^0\to D^0 p \pi^-$ is performed in the part of the phase space containing resonances in the

$D^0 p$ channel. The study is based on a data sample corresponding to an integrated luminosity of 3.0 fb

$^{-1}$ of

$pp$ collisions recorded by the LHCb experiment. [...]
arXiv:1701.07873; CERN-EP-2017-007; LHCB-PAPER-2016-061.- Geneva : CERN, 2017-05-05 - 41 p. Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Figures, tables and other information

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Se også: lignende forfatternavn
1	Otto, A J
2	Otto, A.
150	Otto, Adam
2	Otto, Adam Jedrzej
1	Otto, Alexandra
3	Otto, Andreas

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