List of participants

Name Ιnstitution Position Presentation Title Abstract Presentation
George Melekos University of the Aegean. School of Business. Department of Financial and Management Engineering Staff
Kostas Papageorgiou University of the Aegean Associate Professor
Ioannis Gkialas University of the Aegean Professor
Theodoros Alexopoulos NTU Athens Professor Performance studies of Micromegas for the ATLAS experiment Micromegas is one of the detector technologies (along with the TGC-Thin Gap Chambers) that has been chosen for precision tracking and trigger purposes for the upgrade of the forward muon detectors of the ATLAS experiment in view of the LHC luminosity increase.
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1_theoAlex_hep2013_v2[1].pdf22.77 MB
Georgios Savvidis NEW GAUGE AMOMALIES
Ilias Cholis Fermi National Accelerator Laboratory research associate (postdoc) TeV and PeV neutrinos in km^3 telescopes, a new probe of studying high energy astrophysical phenomena The IceCube collaboration has recently reported the observation of two events with energies in excess of 1 PeV. While the atmospheric origin remains a possibility, this pair of shower events may potentially represent the first observation of high-energy astrophysical neutrinos.
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1_IliasCholis_HEP2013.pdf11.61 MB
stavros katsanevas Paris VII Professor Astroparticle Physics in Europe I will report current development sin Astroparticle Physics projects in Europe.
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2_2013avril_chios.pptx25.69 MB
Ignatios Antoniadis CERN
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3_Antoniadis_Chios0413.pdf469.16 KB
George Leontaris Ioannina Professor TBA
Marcos Dracos IPHC-IN2P3/CNRS Physics potential of neutrino Super Beams After the measurement of the last neutrino oscillation angle theta_13, the next experiments will try to determine the neutrino mass hierarchy and mainly observe for the first time a CP violation in the leptonic sector. These new projects need very powerful proton drivers to produce the necessary intense neutrino beams called Super Beams.
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4_Dracos.ppt21.07 MB
MANOLIS DRIS NTUA PROFESSOR EMERITUS SIGNAL PROPAGATION IN MICROMEGAS The propagation of signals in Micromegas type detectors is examined. A simple scheme with only one long strip is used. It is a transmission line with losses, at its end the system of charge amplifier plus shaper is connected. A more realistic simulation needs to have several strips interacting with each other.
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3_SignPropMicrom1.ppt1.57 MB
Ioannis Frezoulis University of the Aegean Staff
Uli Katz ECAP / Univ. Erlangen Professor The KM3NeT project will be provided soon.
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The slides with two minimal errors corrected and without backup slides13.36 MB
ngizani's picture
Nectaria Gizani Hellenic Open University, School of Science and Technology Lecturer Magnetic fields and jets as particle acceleration sites in active galaxies Multi-wavelength imaging of Active Galactic Nuclei (AGN) can identify the location of the particle acceleration sites. Internal, to the source, magnetic field configurations and external magnetic fields of the environment in which the AGN is situated, provide information of how this acceleration is occurring. Energetics of the radio jets suggest how efficient this acceleration is.
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Talk Abstract3.94 KB
1_hep-2013-ngizani.ppt8.01 MB
Stefanos Leontsinis National Technical University of Athens PhD Student Production of Quarkonium States at ATLAS The Z0 boson and the J/psi resonance are favorite candles in physics analyses because their purely leptonic decay modes provide an enormous background-­‐ suppression and their masses can be fully reconstructed.
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1_sleontsi_HEP_13_04_25_Rare.pdf2.26 MB
Konstantinos Ntekas National Technical University Of Athens PhD Student Performance of Micromegas Chambers In Magnetic Field The Micromegas Detector is an asymmetric gas detector recently qualified for the upgrade of the Small Wheel of the ATLAS experiment at CERN.
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mm_eesfye2013_ntekas_0.pdf17.16 MB
George Iakovidis NTU Athens Ph.D Micromegas Detector Tracking and Trigger Performance with VMM ASIC After years of R&D, Resistive Micromegas detectors have been approved to be the main tracking detectors for the upgrade of the ATLAS Muon spectrometer and particularly the New Small Wheel forward area. In addition to the tracking performance Micromegas will provide trigger information to ATLAS LVL1 trigger.
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3_2013_04_HEP13_MM_Trigger.pdf6.69 MB
Spyros Tzamarias HOU Professor
Stavros Maltezos National Technical University of Athens Assistant Professor
George Fanourakis Institute of Nuclear & Particle Physics, NCSR 'Demokritos' Research Director
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1_gfan-HEP2013-Chios.pptx5.01 MB
Yorgos Tsipolitis NTU Athens The NTUA group activitites
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2_yorgos_Chios-2013.pptx68.53 MB
Athina Kourkoumeli-Charalampidi University of Aegean Doctoral Student Performance studies and characterization of the Micromegas detectors read-out system for the ATLAS upgrade
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2_MM HEP2013.pdf3.77 MB
Ekaterini Tzamariudaki NCSR DEMOKRITOS Researcher Underwater Neutrino Telescopes in the Mediterranean: from the GeV to the PeV neutrino energies
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3_hep2013-chios.ppt1.77 MB
Christina Kourkoumeli University of Athens Professor
Nikos Giokaris University of Athens Professor
Ioannis Nomidis Aristotle University of Thessaloniki Ph.D. student Studies of b-quark production at ATLAS Measuring heavy flavour production at LHC provides an opportunity for a new insight into QCD. ATLAS has measured b-production using B^{+} mesons, D^{*+}mu^{-}X decays, J/\psi X decays and b-jets using data from pp collisions at 7 TeV. The results are presented and compared to theoretical predictions of NLO QCD calculations.
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5_EESFYE2013-Nomidis.pdf5.17 MB
Katerina Zachariadou Tei of Piraeus Ass. Prof.
Niki Saoulidou University of Athens Assistant Professor Search for supersymmetry in events with opposite-sign dileptons and missing transverse energy with the CMS detector In this talk, a search for supersymmetry (SUSY) will be presented in events with two opposite-sign isolated leptons in the final state, accompanied by hadronic jets and missing transverse energy. An artificial neural network is employed to discriminate possible SUSY signals from standard model background.
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SUSY_CHIOS_2013_NS.pdf9.92 MB
5_QCD_CHIOS_2013.pdf4.1 MB
Nikos Maragos NTUA PhD SLM Laser Optical Amplification Design for HSRL Atmospheric Monitoring in UHE Cosmic Ray Observatories The analytical and accurate atmospheric monitoring is an important factor in determining the energy of the primary particles in Ultra High Energy (UHE) Cosmic Ray and Very High Energy (VHE) Cosmic gamma Ray events.
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3_HEP2013_2.pptx2.62 MB
Dimitrios Lenis NCSR Demokritos Reasearch Associate
Sofia Chouridou University of Athens Research Associate Measurement of the total ZZ production cross section in pp collisions at 8 TeV with the ATLAS detector The latest measurement of the ZZ production cross section at 8 TeV using data recorded by the ATLAS experiment at the Large Hadron Collider in 2012 is presented. Events are selected consistent with two Z bosons decaying to electrons or muons. The cross section is measured in the experimental fiducial volume and then used to extract the total ZZ production cross section.
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2_SofiaChouridou_ZZ4l_Chios2013.pdf1.89 MB
Konstantinos Bachas AUTh Postdoc Diboson physics at ATLAS The diboson production in pp collisions at a center-of-mass energy of 7 and 8 TeV, at the LHC, is studied with the ATLAS detector. Results from the measurement of the production cross sections in the leptonic decay modes and derived limits on Anomalous Triple Gauge Couplings are presented.
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3_BachasK.pdf2.83 MB
Somnath Choudhury DESY - Hamburg Scientist Higgs Boson Physics with the CMS detector The results of the search for the Standard Model Higgs Boson with the CMS detector in proton-proton collisions at the LHC at center-of-mass energies of 7 and 8 TeV are reported. The analysis has been performed in five different decay modes for the Higgs Boson comprising the di-photon, ZZ, WW, di-tau and bb-bar final states.
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2_CHOUDHURY-Higgs-Talk-Chios.PDF7.94 MB
Dimitris Fassouliotis University of Athens Assistant Professor
Nikolaos Tsirintanis University of Athens PhD student Search for high-mass states with one lepton plus missing transverse momentum using the ATLAS detector The ATLAS detector is used to search for high-mass states, such as heavy charged gauge bosons (W'), decaying to a lepton (electron or muon) plus missing transverse momentum. Results are presented based on the analysis of pp collisions at a center-of-mass energy of 8 TeV corresponding to an integrated luminosity of 20.3 fb-1 acquired in 2012.
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3_Nikos_T_HEPchios2013.pdf2.9 MB
Stylianos Angelidakis University of Athens PhD Student Study of the channel H→Z(∗)Z→ℓ+ℓ−qq(bar) with the ATLAS Detector A study of the decay channel H→Z(∗)Z→ℓ+ℓ−qq(bar) (ℓ=e,μ) is presented using the pp collision data collected by the ATLAS experiment. Data-driven methods for the background estimation, as well as techniques to improve the mass resolution of the hadronic Z boson decays, are used. Different categories according to the production mechanism / final states of the Higgs boson are studied.
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Stelios_20130426_SFYE_LowMass2L2Q.pdf2.02 MB
George Triantaphyllou National Technical University of Athens Is the Higgs-like particle recently detected at the LHC fundamental? Recent results from the LHC point towards the existence of a Higgs-like particle. Is this consistent with models predicting bosonic states connected to strongly-interacting fermions?
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4_Triantaphyllou_Chios2013.pdf1.36 MB
Emmanuel Chaniotakis University of Athens Graduate Student Differential dijet cross section production measurements with the CMS detector In this talk results on the measurement of inclusive dijet production cross sections at sqrt(s)= 7 TeV and some first results from sqrt(s)=8 TeV will be presented along with future plans. First a brief introduction of the CMS experiment and the physics goals will be given.
Stamatis Gkaitatzis AUTh PhD Student Muon Validation at MuonD3PDAnalysis MuonD3PDAnalysis is a new framework which aims to unify the efforts going into validation and the various performance analyses of muons at ATLAS. Various parts of the existing code are being ported to this new framework.
Emmanuel Tsesmelis CERN Senior Physicist, Directorate Office CERN and the High Energy Frontier This talk presents an overview of high-energy colliders at the energy frontier for the years to come. The immediate plans include the exploitation of the LHC at its design luminosity and energy as well as upgrades to the LHC luminosity and to its injectors.
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tsesmelis_chios_april2013.pptx11.63 MB
Apostolos Tsirigotis Hellenic Open University Post Doc The Hellenic Open University contribution to KM3NeT KM3NeT ($km^3$ Neutrino Telescope) is planned to be a deep-sea multidisciplinary observatory in the Mediterranean Sea that will provide innovative science opportunities spanning Astroparticle Physics and Earth and Sea Science. The present work describes the contribution of the Hellenic Open University (HOU) Physics Laboratory group in evaluating architectures and technologies proposed for KM3NeT.
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3_Tsirigotis_HEP2013.pdf6.16 MB
Theodoros Avgitas Hellenic Open University Phd student Characterization of Hamamatsu R12199 PMTs for the KM3NeT KM3NeT is planned to be a deep-sea multidisciplinary observatory in the Mediterranean Sea. The Physics Laboratory of the Hellenic Open University among others is involved in the characterization of KM3NeT components. The present work describes the characterization of the candidate Hamamatsu R12199 PMTs.
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6_HEP2013_Avgitas.pdf3.63 MB
George Bourlis Hellenic Open University Postdoc Evaluation of the performance of the Time over Threshold technique for the digitization of the signal of KM3NeT KM3NeT will be a deep-sea multidisciplinary observatory in the Mediterranean Sea. The photo-sensor unit is a digital optical module (DOM) consisting of a 17-inch diameter sphere, housing 31 3-inch photomultiplier (PMT) tubes. The front-end electronics is based on the use of the Time over Threshold (ToT) as the main signal processing technique.
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4_HEP2013_Bourlis.pdf4.2 MB
Vasiliki Kouskoura CERN, Aristotle University of Thessaloniki PhD student Recent results on anomalous Triple Gauge Couplings with the ATLAS experiment at LHC The latest results on the limits set on anomalous Triple Gauge Couplings at 7TeV using data recorded by the ATLAS experiment at the Large Hadron Collider are presented. Diboson processes Wγ, Zγ, WW, WZ and ZZ were used to provide new constraints on the Triple Gauge Couplings.
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4_vkousk_Chios_27_04_13.pdf4.51 MB
Dave Charlton University of Birmingham Prof
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1_ATLAS Highlights.pdf19.73 MB
Stilianos Kesisoglou NCSR DEMOKRITOS Institute of Nuclear and Particle Physics Research Associate
Katsoufis Elias National Technical University of Athens Prof. Emer.
George Tsamis NTUA PhD
Chara Petridou Aristotle University of Thessaloniki Professor
kordas's picture
Konstantinos Kordas AUTH Lecturer FTK - the online Fast Tracker upgrade for ATLAS The increased LHC luminosity will give more intresting events per year in a larger background. Trying to fit the online-selected events in the Trigger and DAQ bandwidth becomes more and more challenging then.
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2_Kordas_FTK_EESFYE2013_Chios.pdf5.91 MB
Antonios Leisos Hellenic Open University Lecturer The ASTRONEU research project: Towards KM3NeT_Gr Research Infrastructure Will be available soon
Ioannis Sklavounos NTUA Phd
Andreas Psallidas Institute of Nuclear and Particle Physics
Joao Varela LIP Lisbon Professor Recent results of the CMS experiment at CERN In this contribution we review recent results of the CMS experiment, in particular preliminary measurements of the properties of the new 125 GeV boson performed by the CMS experiment using the full proton-proton dataset collected in 2011-12 (~25 fb-1. Highlights of new results on standard model physics and on searches beyond the standard model will also be covered.
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2_CMShighlights-Chios-Apr13-F.pdf25.17 MB
Michael Koratzinos UNIGE / CERN TLEP, first step in a long-term vision for HEP I will report on TLEP, a possible future project for the HEP community to be housed in a new 80-km ring in the Geneva region. TLEP is an electron-positron circular collider capable of delivering very high luminosities in a wide energy range covering Z lineshape measurements, W pair production, HZ production and ttbar production.
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3_TLEP_chios_Koratzinos.pptx20.93 MB
Theodoros Geralis NCSR Demokritos Director of Research TBA
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4_Geralis_HEP2013.ppt6.85 MB
EVANGELOS GAZIS NATIONAL TECHNICAL UNIVERSITY OF ATHENS PROFESSOR OF PARTICLE PHYSICS
Theodora Papadopoulou National Technical University of Athens Em. Professor
PANAGIOTIS GIANNIKOS 5th High School of Mytilene - Lesvos Teacher of Physics
Constantin Bachas Ecole Normale, Paris Professor
Charilaos Tsagkarakis University of Athens PhD Student Non-linear Schrödinger type solitons for the abelian Higgs model. We study the Abelian Higgs model classical dynamics employing an asymptotic multiscale expansion method, which uses the ratio of the Higgs to the gauge field amplitudes as a small parameter. We derive an effective nonlinear Schroedinger equation for the gauge field, and a linear equation for the scalar field containing the gauge field as a nonlinear source. The latter predicts the existence of
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5_tsagkarakis_Chios.pdf2.03 MB
IOANNIS MANTHOS UNIVERSITY OF AEGEAN PhD Student