CERN Accelerating science

LHCb Notes

LHCb Computing Resource usage in 2015 (I) / Bozzi, Concezio (Universita di Ferrara (IT))
This documents summarizes the usage of computing resources by the LHCb collaboration during the period January 1st- July 31st 2015
LHCb-PUB-2015-019; CERN-LHCb-PUB-2015-019.- Geneva : CERN, 2015

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LHCb Computing Resources: 2016 reassessment and 2017 requests / Bozzi, Concezio (Universita di Ferrara (IT))
This document presents a reassessment for 2016 and an estimate for 2017 of computing resources needed by LHCb, as resulting from the current LHC data taking and recent changes in the LHCb computing model parameters.
LHCb-PUB-2015-018; CERN-LHCb-PUB-2015-018.- Geneva : CERN, 2015

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Measuring pion and kaon tracking efficiencies and asymmetries using charm decays with one partially reconstructed track / Vesterinen, Mika Anton (Ruprecht-Karls-Universitaet Heidelberg (DE)) ; Hellesund, Simen (University of Bergen (NO))
LHCb-PUB-2015-017; CERN-LHCb-PUB-2015-017.- Geneva : CERN, 2015

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A tool for $\gamma/\pi^0$ separation at high energies / Calvo Gomez, Miriam (University of Barcelona (ES)) ; Cogneras, Eric (Univ. Blaise Pascal Clermont-Fe. II (FR)) ; Deschamps, Olivier (Univ. Blaise Pascal Clermont-Fe. II (FR)) ; Hoballah, Mostafa (Univ. Blaise Pascal Clermont-Fe. II (FR)) ; Lefevre, Regis (Univ. Blaise Pascal Clermont-Fe. II (FR)) ; Monteil, Stephane (Univ. Blaise Pascal Clermont-Fe. II (FR)) ; Puig Navarro, Albert (Ecole Polytechnique Federale de Lausanne (CH)) ; Rives Molina, Vicente Jose (University of Barcelona (ES))
This note describes a tool developed to distinguish between photons and neutral pions that are reconstructed as a single cluster in the LHCb ECAL. The separation is achieved by using the fact that electromagnetic clusters produced by these two kinds of particles have different shape [...]
LHCb-PUB-2015-016; CERN-LHCb-PUB-2015-016.- Geneva : CERN, 2015

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Testbeam studies of pre-prototype silicon strip sensors for the LHCb UT upgrade project / Abba, Andrea (INFN, Milan) ; Artuso, Marina (Syracuse U.) ; Blusk, Steven (Syracuse U.) ; Britton, Thomas (Syracuse U.) ; Davis, Adam (Cincinnati U.) ; Dendek, Adam (AGH-UST, Cracow) ; Dey, Biplab (INFN, Milan) ; Ely, Scott (Syracuse U.) ; Fu, Jinlin (INFN, Milan) ; Gandini, Paolo (Oxford U.) et al.
The LHCb experiment is preparing for a major upgrade in 2018-2019. One of the key components in the upgrade is a new silicon tracker situated upstream of the analysis magnet of the experiment. [...]
LHCb-PUB-2015-015; CERN-LHCb-PUB-2015-015; arXiv:1506.00229.- Geneva : CERN, 2015 - 26 p. Fulltext: LHCb-PUB-2015-015 - PDF; arXiv:1506.00229 - PDF; External link: Fulltext

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Analysis of the performance of GEM chambers for the upgrade of the LHCb muon system / Pinci, Davide (Sezione INFN di Roma La Sapienza, Roma, Italy) ; Santimaria, Marco (Sezione INFN di Roma La Sapienza, Roma, Italy)
Triple-GEM chambers, so far used in the inner region of the M1 muon station, are the ideal candidates to replace the MWPCs in the regions where, after the upgrade, the particle rate will be as high as 2 MHz/cm$^2$. Testing the triple-GEM efficiency and time resolution with different gaseous mixtures is therefore a significant step in evaluating the expected performance of the muon system after the upgrade scheduled in 2018, when the luminosity in LHCb will reach $2 \times 10^{33}$ cm$^2$ s$^{-1}$. [...]
LHCb-PUB-2015-014; CERN-LHCb-PUB-2015-014.- Geneva : CERN, 2015 - 13 p. Fulltext: PDF;

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Study of the performance of the MWPC single gap / Pinci, Davide (Sezione INFN di Roma La Sapienza, Roma, Italy)
In this note we report the results of measurements performed with cosmic rays on single gaps of different LHCb Muon Chambers. Their main performance have been investigated in order to achieve a better comprehension of their behavior for optimizing the chamber working conditions..
LHCb-PUB-2015-013; CERN-LHCb-PUB-2015-013.- Geneva : CERN, 2015 - 11 p. Fulltext: PDF;

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An experimental set-up to measure Light Yield of Scintillating Fibres / Alfieri, C (-) ; Rodrigues Cavalcante, A B (Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil) ; Joram, C (CERN, Geneva, Switzerland) ; Kenzie, M W (CERN, Geneva, Switzerland)
In the context of the LHCb SciFi Tracker project, an experimental set up was designed and built to provide reliable and reproducible measurements of the light yield of scintillating fibres. This document describes the principle and technical realisation of the set-up. [...]
LHCb-PUB-2015-012; CERN-LHCb-PUB-2015-012.- Geneva : CERN, 2015 - 10 p. Fulltext: PDF;

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A set-up to measure the optical attenuation length of scintillating fibres / Alfieri, C (CERN, Geneva, Switzerland) ; Rodrigues Cavalcante, A B (Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil) ; Joram, C (CERN, Geneva, Switzerland)
The optical attenuation length of a scintillating fibre characterizes the quality of light transport through the fibre. It relates directly to the quantity of detectable light at the readout end of the fibre. [...]
LHCb-PUB-2015-011; CERN-LHCb-PUB-2015-011.- Geneva : CERN, 2015 - 9 p. Fulltext: PDF;

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Till Moritz Karbach, Scientific Legacy / LHCb Collaboration
We are deeply touched by the sudden loss of our dear friend and colleague Till Moritz Karbach. With this memorial book we wish to commemorate Moritz’ scientific legacy, and what Moritz meant to us as a friend..
LHCb-PUB-2015-010; CERN-LHCb-PUB-2015-010.- Geneva : CERN, 2015 - 194 p. Fulltext: PDF;

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