3,490 research outputs found
Lepton Flavor Violation at LHC
Lepton flavor violation (LFV) within the realm of the Standard Model is
forbidden. However recent neutrino experiments strongly suggest neutrino
oscillations, giving way to LFV. Beyond SM theories, such as supersymmetry and
supergravity also allow LFV. This note reviews the possibility of observing LFV
signal in the two general purpose LHC experiments: ATLAS and CMS. It is shown
that using the initial LHC luminosity, in about a year, either a discovery can
be made or the current LFV limits can be enhanced by an order of magnitude.Comment: for 40th moriond EW conf. proceedings, 7 pages, 3 figure
A Graphical Approach to Radio Frequency Quadrupole Design
The design of a radio frequency quadrupole, an important section of all ion
accelerators, and the calculation of its beam dynamics properties can be
achieved using the existing computational tools. These programs, originally
designed in 1980s, show effects of aging in their user interfaces and in their
output. The authors believe there is room for improvement in both design
techniques using a graphical approach and in the amount of analytical
calculations before going into CPU burning finite element analysis techniques.
Additionally an emphasis on the graphical method of controlling the evolution
of the relevant parameters using the drag-to-change paradigm is bound to be
beneficial to the designer. A computer code, named DEMIRCI, has been written in
C++ to demonstrate these ideas. This tool has been used in the design of
Turkish Atomic Energy Authority (TAEK)'s 1.5 MeV proton beamline at Saraykoy
Nuclear Research and Training Center (SANAEM). DEMIRCI starts with a simple
analytical model, calculates the RFQ behavior and produces 3D design files that
can be fed to a milling machine. The paper discusses the experience gained
during design process of SANAEM Project Prometheus (SPP) RFQ and underlines
some of DEMIRCI's capabilities.Comment: 7 pages, 9 figure
Fourth Family Neutrinos and the Higgs Boson
We evaluate the LHC discovery potential for the fourth family Standard Model
neutrinos in the process . We
show that, depending on their masses, the simultaneous discovery of both the
Higgs boson and the heavy neutrinos is probable at early stages of LHC
operation. Results are presented for both Majorana and Dirac type fourth family
neutrinos.Comment: 12 pages, uses axodraw.sty, v2: includes typo fixes, improved
analysis, v4: minor modifications in response to the JHEP refere
The single production of the lightest E6 isosinglet quark at the LHC
We study the jet associated production of the new quarks predicted by the
GUT model at the LHC. Generator level considerations are made for
different mass values of the lightest of the new quarks to investigate its
discovery potential and the prospects for obtaining its mixing angle to the
Standard Model quarks. We find that after 100 fb of data taking, it is
possible to discover the new quark with a significance more than 5 up
to a mass of 1500 GeV. If no discovery is made, it is possible to constrain the
mass vs quark mixing angle plane.Comment: uses axodraw.st
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