CERN Accelerating science

CERN Preprints

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2014-11-28
17:50
Search for anomalous production of prompt same-sign lepton pairs and pair-produced doubly charged Higgs bosons with $\sqrt{s} = 8$ TeV $pp$ collisions using the ATLAS detector
A low-background inclusive search for new physics in events with same-sign dileptons is presented. [...]
CERN-PH-EP-2014-158.
- 2014.
Fulltext - Previous draft version

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2014-11-28
16:45
Development of the Cryogenic System of AEgIS at CERN / Derking, JH ; Bremer, J ; Burghart, G ; Doser, M ; Dudarev, A ; Haider, S
The AEgIS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) experiment is located at the antiproton decelerator complex of CERN. [...]
CERN-ACC-2014-0291.
- 2014. - 6 p.
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2014-11-28
09:13
... The sign of the LHC octupoles / Fartoukh, Stephane (CERN)
n/a
CERN-ACC-SLIDES-2014-0113.
- 2012. - 14 p.
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2014-11-28
07:23
CMS Pixel Detector: Operational Experience and Run1 to Run2 transition / De Cosa, Annapaola (Zurich U.) /CMS Collaboration
The CMS Pixel detector is at the centre of the CMS experiment and is made of three barrel layers and four endcap disks. It is essential for the reconstruction of track seeds and secondary vertices. [...]
CMS-CR-2014-418.- Geneva : CERN, 2014 - 12 p. Fulltext: PDF;
In : VERTEX 2014 - 23rd International Workshop on Vertex Detectors, Doksy, Czech Republic, 15 - 19 Sep 2014

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2014-11-28
07:23
Latest results on differential cross sections as a function of kinematic variables at the LHC and Tevatron / Diez, Carmen (DESY) /ATLAS, CDF, CMS and D0 Collaborations
An overview of recent measurements of differential top quark pair ($t\bar{t}$) production cross sections is presented, including results in boosted topologies and results both at parton and particle level. The first measurements of differential single top quark t-channel production cross sections in proton-proton collisions are as well presented. [...]
CMS-CR-2014-408.- Geneva : CERN, 2014 - 6 p. Fulltext: PDF;
In : TOP2014: 7th International Workshop on Top Quark Physics, Cannes, France, 29 Sep - 3 Oct 2014

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2014-11-27
17:40
Cryogenic Beam Loss Monitors for the Superconducting Magnets of the LHC / Bartosik, MR (-) ; Dehning, B (-) ; Sapinski, M (-) ; Kurfuerst, C (-) ; Griesmayer, E (CIVIDEC, Vienna-AT) ; Eremin, V (IOFFE, St Petersburg-RU) ; Verbitskaya, E (IOFFE, St Petersburg-RU)
The Beam Loss Monitor detectors close to the interaction points of the Large Hadron Collider are currently located outside the cryostat, far from the superconducting coils of the magnets. [...]
CERN-BE-2014-009.
- 2014. - 4 p.

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2014-11-27
17:23
A Quantum Gas Jet for Non-Invasive Beam Profile Measurement / Holzer, EB (-) ; Jeff, A (-) ; Lefevre, T (-) ; Tzoganis, V (Cockcroft Institute, Daresbury & University of Liverpool-UK) ; Welsch, C (Cockcroft Institute, Daresbury & University of Liverpool-UK) ; Zhang, H (Cockcroft Institute, Daresbury & University of Liverpool-UK)
A novel instrument for accelerator beam diagnostics is being developed by using De Broglie-wave focusing to create an ultra-thin neutral gas jet. [...]
CERN-BE-2014-008.
- 2014. - 5 p.

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2014-11-27
17:07
Simulation of the Beam Dump for a High Intensity Electron Gun / Doebert, S (-) ; Jeff, A (-) ; Lefevre, T (-) ; Pepitone, K (CEA Le Barp-FR)
The CLIC Drive Beam is a high-intensity pulsed electron beam. [...]
CERN-BE-2014-007.
- 2014. - 4 p.

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2014-11-27
16:37
CERN-SPS Wire Scanner Impedance and Wire Heating Studies / Berrig, OE ; Caspers, F ; Dehning, B ; Emery, J ; Hamani, M ; Kuczerowski, J ; Piselli, E ; Salvant, B ; Sautier, R ; Veness, R et al.
This article describes a study performed on one of the CERN-SPS vertical rotational wire scanners in order to investigate the breakage of the wire, which occurred on several occasions during operation in 2012. [...]
CERN-BE-2014-006.
- 2014. - 5 p.
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2014-11-27
16:24
Near-Saturation Single-Photon Avalanche Diode Afterpulse and Sensitivity Correction Scheme for the LHC Longitudinal density Monitor / Bravin, E ; Mazzoni, S ; Palm, M
Single-Photon Avalanche Diodes (SPADs) monitor the longitudinal density of the LHC beams by measuring the temporal distribution of synchrotron radiation. [...]
CERN-BE-2014-005.
- 2014. - 5 p.
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