16,913 research outputs found
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
Excessive Memory Usage of the ELLPACK Sparse Matrix Storage Scheme throughout the Finite Element Computations
Sparse matrices are occasionally encountered during solution of various problems by means of numerical methods, particularly the finite element method. ELLPACK sparse matrix storage scheme, one of the most widely used methods due to its implementation ease, is investigated in this study. The scheme uses excessive memory due to its definition. For the conventional finite element method, where the node elements are used, the excessive memory caused by redundant entries in the ELLPACK sparse matrix storage scheme becomes negligible for large scale problems. On the other hand, our analyses show that the redundancy is still considerable for the occasions where facet or edge elements have to be used
A Search for pair production of the LSP at the CLIC via RPV Decays
In this work we consider pair production of LSP tau-sneutrinos at the Compact
Lineer Collider. We assume that tau-sneutrinos decays in to e\textmu pair via
RPV interactions. Backgroundless subprocess
is analyzed in details. Achievable limits on
at and CL are
obtained depending on mass.Comment: 8 pages, 5 figure
Bigger Bursts From Merging Neutron Stars
GRB 990123 may have radiated more than one solar mass equivalent in just its
gamma emissions. Though this may be within the upper limit of the binding
energy available from neutron stars in the Schwarzschild metric, it is
difficult to imagine a process with the required efficiency of conversion to
gamma rays. Neutron stars of ~10 solar mass are permitted in the Yilmaz metric.
A merger of two neutron stars of maximum mass could release approximately 10
solar mass equivalent binding energy.Comment: 5 pages, 1 figure, submitted to ApJ Letter
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