# LHCb Conference Proceedings

2017-08-17
10:44
 Fixed-target physics at LHCb / Maurice, Emilie Amandine (Universite de Paris-Sud 11 (FR)) The LHCb experiment has the unique possibility, among the LHC experiments, to be operated in fixed target mode, using its internal gas target SMOG. The energy scale achievable at the LHC and the excellent detector capabilities for vertexing, tracking and particle identification allow a wealth of measurements of great interest for cosmic ray and heavy ions physics. [...] LHCb-PROC-2017-027; CERN-LHCb-PROC-2017-027.- Geneva : CERN, 2017 - 6. Fulltext: PDF; In : 5th Conference on Large Hadron Collider Physics 2017, Shanghai, China, 15 - 20 May 2017

2017-08-07
16:10
 New results in LU/LFV tests with LHCb / Prisciandaro, Jessica (Universidade de Santiago de Compostela (ES)) During the Run 1 of the LHC, the LHCb experiment has collected a large sample of beauty-hadrons that corresponds to an integrated luminosity of 3.0 fb$^{−1}$ at $pp$ centre-of-mass energy of 7 and 8 TeV. In the following, an overview of the rare decay measurements the LHCb collaboration performed during Run 1 is presented. [...] LHCb-PROC-2017-026; CERN-LHCb-PROC-2017-026.- Geneva : CERN, 2017 - 10. - Published in : PoS: LHCP2016, pp. 063 Fulltext: PDF; In : 4th Conference on Large Hadron Collider Physics 2016 (LHCP 2016), Lund, Sweden, 13 - 18 Jun 2016

2017-08-04
11:11
 Tests of lepton flavour universality with semileptonic decays at LHCb / Betti, Federico (Universita e INFN, Bologna (IT)) Pending LHCb-PROC-2017-025; CERN-LHCb-PROC-2017-025.- Geneva : CERN, 2017 In : 5th Conference on Large Hadron Collider Physics 2017, Shanghai, China, 15 - 20 May 2017

2017-08-04
11:08
 Tests of Lepton Flavour Universality with $b \rightarrow sll$ transitions at LHCb / Andreassi, Guido (Ecole Polytechnique Federale de Lausanne (CH)) Semileptonic $b \rightarrow sll$ processes constitute a good probe for new physics phenomena: new particles contributing to the loops could aﬀect branching fractions and angular distributions, and have diﬀerent couplings to diﬀerent lepton families, thus violating lepton ﬂavour universality. Recent results from the LHCb experiment are reviewed.. LHCb-PROC-2017-024; CERN-LHCb-PROC-2017-024.- Geneva : CERN, 2017 - 6. Fulltext: PDF; In : 5th Conference on Large Hadron Collider Physics 2017, Shanghai, China, 15 - 20 May 2017

2017-07-07
14:20
 Novel Real-time Alignment and Calibration of the LHCb detector in Run2 / Martinelli, Maurizio (Ecole Polytechnique Federale de Lausanne (CH)) LHCb has introduced a novel real-time detector alignment and calibration strategy for LHC Run2. Data collected at the start of the fill are processed in a few minutes and used to update the alignment parameters, while the calibration constants are evaluated for each run. [...] LHCb-PROC-2017-023; CERN-LHCb-PROC-2017-023.- Geneva : CERN, 2017 - 6. Fulltext: PDF; In : 22nd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2016, San Francisco, Usa, 10 - 14 Oct 2016

2017-06-29
15:10
 Production measurements at LHCb / Rachwal, Bartlomiej (AGH University of Science and Technology (PL)) The $\text{LHC}b$ detector, with its excellent momentum resolution and flexible trigger strategy, is ideally suited for measuring heavy quark and quarkonia production properties. In addition, the new system of forward shower counters installed upstream and downstream has begun to be used, therefore the experiment is being suited to measure central exclusive production. [...] LHCb-PROC-2017-022; CERN-LHCb-PROC-2017-022.- Geneva : CERN, 2017 - 10. Fulltext: PDF; In : 23rd Cracow Epiphany Conference on Particle Theory Meets the First Data from LHC Run 2, Cracow, Poland, 9 - 12 Jan 2017

2017-06-29
15:06
 Central Exclusive Production at LHCb / Rachwal, Bartlomiej (AGH University of Science and Technology (PL)) The LHCb detector, with its excellent momentum resolution and flexible trigger strategy, is ideally suited for measuring particles produced exclusively. In addition, a new system of forward shower counters has been installed upstream and downstream of the detector, and has been used to facilitate studies of Central Exclusive Production. [...] LHCb-PROC-2017-021; CERN-LHCb-PROC-2017-021.- Geneva : CERN, 2017 - 7. Fulltext: PDF; In : 25th International Workshop on Deep Inelastic Scattering and Related Topics, Birmingham, UK, 03 - 07 Apr 2017

2017-06-22
09:47
 New Physics Searches with $b\to s\ell^+\ell^-$ Transitions and Rare Decays at LHCb / De Bruyn, Kristof Antoon M ((CPPM, Aix-Marseille Universite, CNRS/IN2P3, Marseille, France)) Several tensions between the experimental measurements and their Standard Model predictions have been observed in rare $B$ meson decays mediated by $b\to s\ell^+\ell^-$ transitions. To understand the nature of these discrepancies, the LHCb experiment is extending its previously reported studies with additional observables and decay modes. [...] LHCb-PROC-2017-020; CERN-LHCb-PROC-2017-020.- Geneva : CERN, 2017 - 8. Fulltext: PDF; In : XXXI Rencontres de Physique de La Vallée d'Aoste, La Thuile, Vallée D'aoste, Ita, 5 - 11 Mar 2017

2017-06-22
09:13
 Lepton Flavour Violation in Tau Decays: Results and Prospects at the LHC In this report, searches for the lepton flavour violating decays $\tau^-\to\mu^-\mu^+\mu^-$, $Z^0\to\tau^{\pm}\mu^{\mp}$ and $D^0\to e^{\pm}\mu^{\mp}$ are presented, using proton--proton collision data recorded by the LHC experiments during 2011 and 2012. The ATLAS experiment puts an upper limit on $\mathcal{B}(\tau^-\to\mu^-\mu^+\mu^-) < 3.76 \times 10^{-7}$ at $90\%$ confidence level, and on $\mathcal{B}(Z^0\to\tau^{\pm}\mu^{\mp}) < 1.69 \times 10^{-5}$ at $95\%$ confidence level, based on a data sample corresponding to an integrated luminosity of $20.3\:fb^{-1}$. [...] LHCb-PROC-2017-019; CERN-LHCb-PROC-2017-019.- Geneva : CERN, 2017 - 4. Fulltext: PDF; In : The 14th International Workshop on Tau Lepton Physics (Tau2016), Beijing, China, 18 - 23 Sep 2016

2017-06-22
08:57
 Tests of Lepton Universality at LHCb / De Bruyn, Kristof Antoon M (CPPM, Aix-Marseille Universit ́e, CNRS/IN2P3, Marseille, France) In this report, measurements of the ratios of branching fractions $R_K = \mathcal{B}(B^+\to K^+\mu^+\mu^-)/\mathcal{B}(B^+\to K^+e^+e^-)$ and $R(D^*) = \mathcal{B}(\bar B^0\to D^{*+}\tau^-\bar \nu_{\tau})/\mathcal{B}(\bar B^0\to D^{*+}\mu^-\bar \nu_{\mu})$, as well as preliminary upper limits on the $B_{(s)}^0\to\tau^+\tau^-$ branching fractions are presented, using proton-proton collision data corresponding to an integrated luminosity of $3.0 \text{fb}^{-1}$ recorded by the LHCb experiment during 2011 and 2012. The value of $R_K$ is measured to be $0.745^{+0.090}_{-0.074}\:(\mathrm{stat}) \pm 0.036\:(\mathrm{syst})$, $R(D^*)$ equals $0.336 \pm 0.027\:(\mathrm{stat}) \pm 0.030\:(\mathrm{syst})$, and at $95\%$ confidence level $\mathcal{B}(B_s^0\to\tau^+\tau^-) < 3.0\times 10^{-3}$ and $\mathcal{B}(B^0\to\tau^+\tau^-) < 1.3\times 10^{-3}$. [...] LHCb-PROC-2017-018; CERN-LHCb-PROC-2017-018.- Geneva : CERN, 2017 - 4. Fulltext: PDF; In : The 14th International Workshop on Tau Lepton Physics (Tau2016), Beijing, China, 18 - 23 Sep 2016