Luigi Guiducci
(Universita e INFN Bologna (IT))
20/11/2012, 09:10
Status and performance of the experiments
The CMS experiment at the LHC collected 5.55 /fb of proton proton collisions data at a center of mass energy of 7 TeV in 2011 and almost 20 /fb at 8 TeV energy in 2012, while the LHC run is still ongoing. The CMS detector has shown excellent performance and very good data taking efficiency. The operational experience will be discussed focusing on relevant technical aspects. The performance of...
Evgeny Kryshen
(B.P. Konstantinov Petersburg Nuclear Physics Institute - PNPI ()
20/11/2012, 09:50
Status and performance of the experiments
The ALICE experiment has been running successfully since 2010 and made an impressive progress towards understanding of hot and dense QCD matter produced in heavy-ion collisions at LHC energies. Recent results on identified particle spectra, azimuthal anisotropy, particle correlations, heavy flavour and quarkonia production in PbPb collisions at sqrt(sNN) = 2.76 TeV will be presented. Future...
Alexander Mamonov
(Russian Federal Nuclear Center (RU))
20/11/2012, 10:30
Status and performance of the experiments
We report on the development of a software simulator of the detector control system for the ALICE Photon Spectrometer (PHOS). PHOS is an electromagnetic calorimeter, part of the ALICE experiment installed at the CERN Large Hadron Collider (LHC). The simulator was design and developed based on the experience acquired during the first years of operation of the detector, from 2009 to 2012. It...
Daria Savrina
(M.V. Lomonosov Moscow State University (RU))
20/11/2012, 11:20
Status and performance of the experiments
The LHCb experiment is purposed to study the properties of the beauty and charmed particles decays. In such decays the search for the physics beyond the Standard Model is performed in an indirect way, as one expects contribution from non-standard particles and forces to become visible through the branching fractions of the rare decays, CP-asymmetries and many other observables. The LHCb...
Oleg Solovyanov
(Institute for High Energy Physics (RU))
20/11/2012, 12:00
Status and performance of the experiments
After the successful data taking year of 2011 at 7 TeV, since March of 2012 the ATLAS experiment at LHC is collecting data with colliding proton beams at the previously unparalleled centre of mass energy of 8 TeV. A challenging task was to cope with the augmented event rates due to the increased luminosity delivered by the collider and large pileup conditions. A status of the ATLAS detector is...
Hongbo Zhu
(Deutsches Elektronen-Synchrotron (DE))
20/11/2012, 12:30
Status and performance of the experiments
After successful LHC operation at the center-of-mass energy of 7 TeV in 2011, the LHC is scheduled to deliver even more data in 2012 at 8 TeV. Meanwhile, plans are actively advancing for a series of upgrades, culminating roughly 10 years from now in the high luminosity LHC (HL-LHC) project, delivering of order five times the LHC nominal instantaneous luminosity along with luminosity levelling....
Prof.
Valery Telnov
(Budker INP, Novosibirsk, Russia)
21/11/2012, 09:00
LEP3 Higgs factory
Particle loss due to the emission of single energetic beamstrahlung photons is shown to impose a fundamental limit on storage ring luminosities at energies more than 2E~140 GeV for head-on collisions and 2E~40 GeV for crab-waist collisions. Above these thresholds the suppression factor due to beamstrahlung scales as 1/E^4/3 and for a fixed power of synchrotron radiation L \propto R/E^13/3. ...
m Koratzinos
(University of Geneva)
21/11/2012, 09:30
LEP3 Higgs factory
The discovery of X(125) at CERN, which looks increasingly likely to be the long-awaited Higgs boson, opens the debate of which type of machine would serve best as a Higgs factory. LEP3 is a low-cost, high-luminosity circular e+e- collider operating near the Higgs production optimal centre-of-mass energy of 240GeV. We will briefly discuss what accuracies on Higgs observables are necessary to...
Prof.
Valery Telnov
(Budker INP, Novosibirsk, Russia)
21/11/2012, 10:00
LEP3 Higgs factory
Various approaches to Higgs factories are discussed: LC, storage ring, muon collider, photon collider, etc, incl. news from the HF2012, FNAL, Nov. 14-16, 2012.
Dr
Sergey Ivanov
(Institute for High Energy Physics (IHEP))
22/11/2012, 09:00
Status and plans of LHC machine
The report overviews present status of the Accelerator Complex U70 of IHEP-Protvino comprising four machines (2 linear accelerators and 2 synchrotrons). Particular emphasis is put on the recent upgrades aimed at improving quality of proton beam and implementing program to accelerate light ions (carbon).
Dr
Mirko Pojer
(CERN)
22/11/2012, 09:30
Status and plans of LHC machine
In three years of operation, the LHC has delivered a total of more than 25 fb-1 of integrated luminosity, providing collisions at 7 and 8 TeV c.o.m. The reasons for this tremendous success will be underlined.
At the beginning of next year, the machine will be stopped for about 20 months, at the end of which the energy, and therefore the potential for discoveries, will be increased. The...
Prof.
Anatoly Petrukhin
(Moscow State Engineering Physics Institute (RU))
22/11/2012, 10:00
Searches for Phenomena beyond the Standard Model
In cosmic ray experiments, the particles with energies (10^15 – 10^19) eV are investigated. This interval corresponds to (1.4 – 140) TeV in the center-of-mass system, which is 10 times higher than maximum LHC energy. Many unusual results in cosmic ray experiments in this energy interval were observed, which cannot be explained in frame of existing theoretical models and approaches. For their...
Dr
Wolfgang Waltenberger
(HEPHY Vienna)
22/11/2012, 11:00
Searches for Phenomena beyond the Standard Model
To this date CMS has performed a wide range of searches for physics beyond the standard model. The program comprises both broad, inclusive searches as well as exclusive, specialised approaches. In this overview talk, the results with proton-proton collision data both at 7 and 8 TeV will be summarized, with a focus on presenting some highlights of the CMS search program.
5.
Search for a heavy neutrino and right-handed W of the left-right symmetric model in pp collisions
Mikhail Kirsanov
(Russian Academy of Sciences (RU))
22/11/2012, 11:30
Searches for Phenomena beyond the Standard Model
We describe the search for signals from the production of right-handed W bosons and heavy neutrinos $N_l (l = e, \mu)$, that arise naturally in the left-right symmetric extension to the standard model, using 5 1/fb of collision data collected by the CMS Experiment at the LHC in 2011 at $\sqrt{s}=7$ TeV and 3.6 1/fb of 2012 collision data at $\sqrt{s}=8$ TeV. No excess over expectations from...
Nathan Edward Triplett
(Brookhaven National Laboratory (US))
22/11/2012, 12:00
Searches for Phenomena beyond the Standard Model
With the upgrade of LHC center of mass energy to 8 TeV along with high intensity beams, many regions of beyond standard model physics are able to be probed for the first time. This talk will present the current status of the ATLAS SUSY and exotic searches with a focus on the most recent 8 TeV results.
Prof.
Boris Arbuzov
(Moscow State University, Skobeltsyn Institute of Nuclear Physics)
22/11/2012, 12:30
Higgs Phenomenology and lessons from LHC results
The recently discovered resonance at $125.7\, GeV$ in invariant mass distribution of $\gamma\, \gamma$ and of $l^+\,l^+\,l^-\,l^-$ may be tentatively interpreted as a scalar bound state $X$ consisting of two $W$. In the present note we consider this option and show that this interpretation agrees existing experimental data including the last LHC discovery and the $b \bar b$ bump reported by...
