CERN Accelerating science

Preprints

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2016-06-27
17:30
Searches for $R$-parity-violating supersymmetry in pp collisions at $\sqrt{s}= $ 8 TeV in final states with 0-4 leptons
Results are presented from searches for $R$-parity-violating supersymmetry in events produced in pp collisions at $\sqrt{s}= $ 8 TeV at the LHC. [...]
CERN-EP-2016-097 ; CMS-SUS-14-003-003.
- 2016.
Additional information for the analysis - CMS AuthorList - Fulltext

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2016-06-27
16:47
SWATCH Common software for controlling and monitoring the upgraded CMS Level-1 trigger / Bologna, Simone (INFN, Milan Bicocca) ; Codispoti, Giuseppe (INFN, Bologna ; Bologna U.) ; Dirkx, Glenn (KU Leuven, FET) ; Kreczko, Lukasz (Bristol U.) ; Lazaridis, Christos (Wisconsin U., Madison) ; Paradas, Evangelos (Ioannina U.) ; Rose, A ; Thea, Alessandro (Rutherford) ; Williams, Thomas Stephen (Rutherford)
The Large Hadron Collider at CERN restarted in 2015 with a higher centre-of-mass energy of 13TeV. The instantaneous luminosity is expected to increase significantly in the coming years. [...]
CMS-CR-2016-121.- Geneva : CERN, 2016 - 7 p. Fulltext: PDF;
In : 20th IEEE-NPSS Real Time Conference, Padua, Italy, 5 - 10 Jun 2016

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2016-06-27
16:44
Single top quark production with CMS / Mitra, Soureek (TIFR, Mumbai, DHEP) /CMS Collaboration
Measurements of single top quark production are presented, performed using CMS data collected in 2011, 2012 and 2015 at centre-of-mass energies of 7, 8 and 13 TeV respectively. The cross sections for the electroweak production of single top quarks in the t-channel and in association with W-bosons is measured and the results are used to place constraints on the CKM matrix element Vtb. [...]
CMS-CR-2016-135.- Geneva : CERN, 2016 - 8 p. Fulltext: PDF;
In : 24th International Workshop on Deep Inelastic Scattering and related subjects, Hamburg, Germany, 11 - 15 Apr 2016

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2016-06-27
16:42
New physics in final states with leptons or photons (EXO) / Radogna, Raffaella (INFN, Bari ; Bari U.) /CMS Collaboration
A survey is presented of results from some recent searches for exotic physics in final states with leptons or photons such as dilepton and diphoton massive resonances or vector-like quarks searches. The results are based on 13 TeV proton-proton collisions data collected by the CMS detector at the LHC..
CMS-CR-2016-122.- Geneva : CERN, 2016 - 9 p. Fulltext: PDF;
In : 30th Les Rencontres de Physique de la Vallée d'Aoste Results and Perspectives in Particle Physics, La Thuile, Aosta Valley, Italie, 6 - 12 Mar 2016

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2016-06-27
16:42
High-$p_T$ multi-jet final states at ATLAS and CMS / Lange, Clemens (CERN) /ATLAS and CMS Collaborations
The increase of the centre-of-mass energy of the Large Hadron Collider (LHC) to 13 TeV has opened up a new energy regime. Final states including high-momentum multi-jet signatures often dominate beyond standard model phenomena, in particular decay products of new heavy particles. [...]
CMS-CR-2016-093.- Geneva : CERN, 2016 - 9 p. Fulltext: PDF;
In : 51st Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 12 - 19 Mar 2016

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2016-06-27
14:52
The CMS Data Quality Monitoring software experience and future improvements / De Guio, Federico (Texas Tech.) /CMS Collaboration
The Data Quality Monitoring (DQM) Software proved to be a central tool in the CMS experiment. Its flexibility allowed its integration in several environments Online, for real-time detector monitoring; Offline, for the final, fine-grained Data Certification; Release Validation, to constantly validate the functionality and the performance of the reconstruction software; in Monte Carlo productions. [...]
CMS-CR-2013-350.- Geneva : CERN, 2013 - 6 p. Fulltext: PDF;
In : 20th International Conference on Computing in High Energy and Nuclear Physics 2013, Amsterdam, Netherlands, 14 - 18 Oct 2013

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2016-06-27
14:27
The role of the CMS electron and photon trigger in the study of the Higgs boson and other resonances / Strebler, Thomas (Ecole Polytechnique) /CMS Collaboration
The Compact Muon Solenoid (CMS) experiment implements a sophisticated two-level triggering system composed of the Level-1, instrumented by custom-design hardware boards, and a software High-Level-Trigger. A new Level-1 trigger architecture with improved performance is now being used to maintain the thresholds used in LHC Run I for the more challenging conditions experienced during Run II.We present the performance of the upgraded CMS electron and photon trigger in the context of Higgs boson decays into final states with photons and electrons. [...]
CMS-CR-2016-129.- Geneva : CERN, 2016 - 5 p. Fulltext: PDF;
In : 17th International Conference on Calorimetry in Particle Physics, Daegu, Republic of Korea, 15 - 20 May 2016

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2016-06-27
14:27
Jets in Heavy Ion Collisions with CMS / Salur, Sevil (Rutgers U., Piscataway) /CMS Collaboration
Jet physics in heavy ion collisions is a rich field which has been rapidly evolving since the first observations of medium interactions at RHIC through back-to-back hadron correlations and at LHC via reconstructed jets. In order to completely characterize the final state via jet-medium interactions and distinguish between competing energy loss mechanisms complementary and robust jet observables are investigated. [...]
CMS-CR-2016-123.- Geneva : CERN, 2016 - 9 p. Fulltext: PDF;
In : 32th Winter Workshop on Nuclear Dynamics, Guadeloupe, France, 28 Feb - 05 Mar 2016

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2016-06-27
14:27
Emulation of a prototype FPGA track finder for the CMS Phase-2 upgrade with the CIDAF emulation framework. / CMS Collaboration
The CMS collaboration is preparing a major upgrade of its detector, so it can operate during the high luminosity run of the LHC from 2026. The upgraded tracker electronics will reconstruct the trajectories of charged particles within a latency of a few microseconds, so that they can be used by the level-1 trigger. [...]
CMS-CR-2016-114.- Geneva : CERN, 2016 - 8 p. Fulltext: PDF;
In : 20th IEEE-NPSS Real Time Conference, Padua, Italy, 5 - 10 Jun 2016

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2016-06-27
14:27
An FPGA based track finder at L1 for CMS at the High Luminosity LHC / Amstutz, Christian (KIT, Karlsruhe, EKP) ; Ball, Fionn Amhairghen (Bristol U.) ; Balzer, Matthias Norbert (KIT, Karlsruhe, EKP) ; Brooke, James John (Bristol U.) ; Calligaris, Luigi (Rutherford) ; Cieri, Davide (Rutherford) ; Clement, Emyr John (Bristol U.) ; Hall, Geoffrey (Imperial Coll., London) ; Harbaum, Tanja Renate (KIT, Karlsruhe, EKP) ; Harder, Kristian (Rutherford) et al.
A new CMS Tracker is under development for operation at the High Luminosity LHC from 2025. It includes an outer tracker based on PT-modules which will construct tracker stubs, built by correlating clusters in two closely spaced sensor layers for the rejection of low transverse momentum track hits, and transmit them off-detector at 40MHz. [...]
CMS-CR-2016-112.- Geneva : CERN, 2016 - 10 p. Fulltext: PDF;
In : 20th IEEE-NPSS Real Time Conference, Padua, Italy, 5 - 10 Jun 2016

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