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# Posters

2014-10-21
11:04
 LS1 “First Long Shutdown of LHC and its Injector Chains” / Foraz, K ; Baird, S ; Barberan, M ; Bernardini, M ; Coupard, J ; Gilbert, N ; Hay, D ; Mataguez, S ; McFarlane, D The LHC and its Injectors were stopped in February 2013, in order to maintain, consolidate and upgrade the different equipment of the accelerator chain, with the goal of achieving LHC operation at the design energy of 14 TeV in the centre-of-mass. [...] CERN-ACC-POSTER-2014-0001. - 2014. - 1 p. Full text

2014-10-08
16:16
Secluded Dark Matter search in the Sun with the ANTARES neutrino telescope
 Reference: Poster-2014-450 Keywords:  Dark Matter  Secluded Dark Matter  Analysis Created: 2014. -1 p Creator(s): Adrián-Martínez, S; on behalf of the, ANTARES Collaboration Models where Dark Matter (DM) is secluded from the Standard Model via a mediator have increased their presence during the last decade to explain some experimental observations. This is a special scenario where DM, which would gravitationally accumulate in sources like the Sun, the Earth or the Galactic Centre, is annihilated into a non-standard Model mediator which subsequently decays into Standard Model particles, two co-linear muons for example. As the lifetime of the mediator could be large enough, its decay may occur in the vicinity of the Earth and the resulting SM particles could be detected. In this work we will describe the analysis for secluded dark matter coming from the Sun with ANTARES in three different cases: a) detection of di-muons that result of the mediator decay, or neutrino detection from: b) mediator that decays into di-muon and, in turn, into neutrinos, and c) mediator that directly decays into neutrinos. Sensitivities and results of the analysis for each case will be presented. © CERN Geneva Access to files

2014-08-29
16:15
Study of ZZ to four leptons events in ATLAS at the LHC and upgrade of the ATLAS Muon Spectrometer
 Reference: Poster-2014-448 Keywords:  ZZ  TGC  ATLAS  Muon  Spectrometer  upgrade  LHC Created: 2014. -1 p Creator(s): Kouskoura, V The study of the ZZ and ZZ* production in proton-proton collisions at the Large Hadron Collider (LHC) at CERN is presented. The data analyzed in this study were recorded by the ATLAS experiment at a centre-of-mass energy of 7 TeV and of 8 TeV. The selected events are consistent with fully leptonic ZZ decays, in particular to electrons and muons. The total ZZ production cross section is measured and is found to be in agreement with the Standard Model (SM) prediction. The ZZ production allows the study of the anomalous neutral Triple Gauge Couplings. No deviation from the SM prediction is found that could indicate the presence of New Physics. In view of the forthcoming increase of the instantaneous luminosity of the LHC, the ATLAS Collaboration foresees upgrades of the detector. An upgrade of the Muon Spectrometer is presented. The integration of the new detection elements in the ATLAS Geometry is illustrated, as well as the increase in the total Barrel acceptance. Related links:CERN Doctoral Student Poster Session 2014 © CERN Geneva Access to files

2014-08-25
14:47
The Development of a General Purpose ARM-based Processing Unit for the TileCal sROD
 Reference: Poster-2014-447 Keywords:  High data throughput  sROD  Tile Calorimeter  Pile-up Created: 2014. -1 p Creator(s): Cox, Mitchell A The Large Hadron Collider at CERN generates enormous amounts of raw data which present a serious computing challenge. After planned upgrades in 2022, the data output from the ATLAS Tile Calorimeter will increase by 200 times to 41 Tb/s! ARM processors are common in mobile devices due to their low cost, low energy consumption and high performance. It is proposed that a cost-effective, high data throughput Processing Unit (PU) can be developed by using several consumer ARM processors in a cluster configuration to allow aggregated processing performance and data throughput while maintaining minimal software design difficulty for the end-user. This PU could be used for a variety of high-level functions on the high-throughput raw data such as spectral analysis and histograms to detect possible issues in the detector at a low level. High-throughput I/O interfaces are not typical in consumer ARM System on Chips but high data throughput capabilities are feasible via the novel use of PCI-Express as the I/O interface to the ARM processors. An overview of the PU is given and the results for performance and throughput testing of Freescale i.MX6 quad-core ARM Cortex-A9 processors are presented. Related links:Affiliation web site © CERN Geneva Access to files

2014-08-18
15:38
LHCb Search for new physics in the $b \rightarrow c\bar{c}s$ decays with LHCb detector at LHC
 Reference: Poster-2014-446 Keywords:  LHCb Created: 2014. -1 p Creator(s): Martin, Morgan LHCb Search for new physics in the $b \rightarrow c\bar{c}s$ decays with LHCb detector at LHC Related links:CERN Summer Student poster session © CERN Geneva Access to file

2014-07-31
14:03
LHCb Upstream Tracker
 Reference: Poster-2014-445 Keywords:  lhcb  upstream tracker Created: 2014. -1 p Creator(s): Gandini, Paolo The LHCb upgrade requires replacing the silicon strip tracker between the vertex locator (VELO) and the magnet. A new design has been developed and tested based on the "stave" concept planned for the ATLAS upgrade. Related links:Conference LHCb Poster © CERN Geneva Access to files

2014-07-16
11:49
LHCb Upstream Tracker
 Reference: Poster-2014-444 Keywords:  LHCb Created: 2014. -1 p Creator(s): Gandini, P The LHCb upgrade requires replacing the silicon strip tracker between the vertex locator (VELO) and the magnet. A new design has been developed and tested based on the "stave" concept planned for the ATLAS upgrade Related links:50 Years of CP Violation © CERN Geneva Access to files

2014-07-16
11:39
LHCb Measurement of the CKM angle $\gamma$ at LHCb
 Reference: Poster-2014-443 Keywords:  LHCb Created: 2014. -1 p Creator(s): Ali, S In this poster we present the latest result by the LHCb collaboration in determining the CKM angle $\gamma$ ($(67.1 \pm 12)^{\circ}$). The result is determined by combining several $B \to Dh$ analyses. Latest results from the decay time dependent $B_{s} \to D_{s}K$ analysis is also reported, along with a few other decay channels interesting for determination of $\gamma$ in the future. Related links:50 Years of CP Violation © CERN Geneva Access to file

2014-07-15
10:52
LHCb : Measuring $CP$ violation with $\Delta A_{CP}$ at LHCb
 Reference: Poster-2014-442 Keywords:  LHCb Created: 2014. -1 p Creator(s): Pearce, A Measurements are presented of direct $CP$ violation in $D^{0}$ meson decays in LHCb, using the $\Delta A_{CP}$ technique, and a proposal is outlined to make similar measurements in the decays of the charmed baryon $\Lambda_{c}^{+}$. The motivations for use of the $\Delta A_{CP}$ method are discussed, along with the current results and future prospects. Related links:50 Years of CP Violation © CERN Geneva Access to files

2014-07-14
17:12
LHCb : Search for Lepton Flavour Violation at LHCb
 Reference: Poster-2014-441 Keywords:  LHCb Created: 2014. -1 p Creator(s): Rives Molina, Vicente The observation of neutrino oscillations has re-opened the case for searches of lepton-flavour violating decays. We report on recent results on searches for short or long-lived Majorana heavy neutrinos in B&arr;μμπ and τ→μμμ decays Related links:ICHEP2014 © CERN Geneva Access to files

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