3,636 research outputs found
Higgs at the LHC
We review the Higgs physics prospects of the ATLAS and CMS experiments at the LH
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CDF top physics
The authors present the latest results about top physics obtained by the CDF experiment at the Fermilab Tevatron collider. The data sample used for these analysis (about 110 pb{sup {minus}1}) represents almost the entire statistics collected by CDF during four years (1992--95) of data taking. This large data size has allowed detailed studies of top production and decay properties. The results discussed here include the determination of the top quark mass, the measurement of the production cross section, the study of the kinematics of the top events and a look at top decays
Power mezzanine PDB-LTM: Status of the boards production
A second problem is due to errors in \u201c populating\u201d the board. Some components, labelled as \uabDNP (Do Not Mount) were mounted by the assembler Please note that the manufacturer is the same of all previous versions! \u2026\u2026 he did not read instruction?? We had to remove all not-wanted components. Almost Solved! Only one problem is still present on the boards
PDB issues and Production Plan
8 PDB pre\u2010production boards (version 3) received in Milano end of February Differences between version 3 and previous version (version 2): 1. Different values of some resistors in order to optimize a few output voltages as requested by Hao after some tests of PDB v2 in the LTDB 2. Some geometrical changes implemented in the frame Of the 8 pre\u2010production PDBS: \u2022 4 boards were not useable because of a mistake made by the manufacturer (problem understood \u2013 see March Lar week presentation https://indico.cern.ch/event/800559/contributions/3339352/attachments/1806520/2948521/PDB\u2010LTM_2019\u201003\u201005.pdf ) \u2022 4 boards were successfully tested in Milano and 3 of them were sent to BNL During the tests in BNL, a start up sequence not correct in some situation was observed. The problem could not be reproduced in Milano with the other v3 board. Moreover the problem was not observed with v2 boards (neither in Milano nor in BNL) Investigation on this issue started and the problem was traced to dependencies on the LVPS used in the tests. Milano had used always the same LVPS in the tests, BNL used not only the Wiener LVPS but also other devices (Vicor and Keysight). Moreover the input capacitors of the LTDB were changed to be compatible with 48 V input voltage for Phase II: \u2013 to be compatible with the footprint in the LTDB layout the capacitance was slightly reduced
Proceedings of the Workshop on Monte Carlo's, Physics and Simulations at the LHC PART II
These proceedings collect the presentations given at the first three meetings
of the INFN "Workshop on Monte Carlo's, Physics and Simulations at the LHC",
held at the Frascati National Laboratories in 2006. The first part of these
proceedings contains pedagogical introductions to several basic topics of both
theoretical and experimental high pT LHC physics. The second part collects more
specialised presentations.Comment: 157 pages, 136 figures; contribution by M. Grazzini has been adde
Bottom Production
We review the prospects for bottom production physics at the LHC.Comment: 74 pages, Latex, 71 figures, to appear in the Report of the ``1999
CERN Workshop on SM physics (and more) at the LHC'', P. Nason, G. Ridolfi, O.
Schneider G.F. Tartarelli, P. Vikas (conveners
Position resolution and particle identification with the ATLAS EM calorimeter
In the years between 2000 and 2002 several pre-series and series modules of
the ATLAS EM barrel and end-cap calorimeter were exposed to electron, photon
and pion beams. The performance of the calorimeter with respect to its finely
segmented first sampling has been studied. The polar angle resolution has been
found to be in the range 50-60 mrad/sqrt(E (GeV)). The neutral pion rejection
has been measured to be about 3.5 for 90% photon selection efficiency at pT=50
GeV/c. Electron-pion separation studies have indicated that a pion fake rate of
(0.07-0.5)% can be achieved while maintaining 90% electron identification
efficiency for energies up to 40 GeV.Comment: 32 pages, 22 figures, to be published in NIM
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