909 research outputs found
Constraining Higgsino Kink Tracks from Existing LHC Searches
Considering the supersymmetric model with the long-lived charged Higgsino, we
discuss how Higgsino kink signals can show up in the latest LHC Disappearing
Track (DT) and stable chargino searches. We derive constraints on the Higgsino
kink signal, and characterize it in comparison to the Wino DT and the slepton
kink track. We also discuss how to infer Higgsino model kinematics.Comment: 5 pages, 6 figures. v3: published version with major update based on
the latest dat
Performance of SSE and AVX Instruction Sets
SSE (streaming SIMD extensions) and AVX (advanced vector extensions) are SIMD
(single instruction multiple data streams) instruction sets supported by recent
CPUs manufactured in Intel and AMD. This SIMD programming allows parallel
processing by multiple cores in a single CPU. Basic arithmetic and data
transfer operations such as sum, multiplication and square root can be
processed simultaneously. Although popular compilers such as GNU compilers and
Intel compilers provide automatic SIMD optimization options, one can obtain
better performance by a manual SIMD programming with proper optimization: data
packing, data reuse and asynchronous data transfer. In particular, linear
algebraic operations of vectors and matrices can be easily optimized by the
SIMD programming. Typical calculations in lattice gauge theory are composed of
linear algebraic operations of gauge link matrices and fermion vectors, and so
can adopt the manual SIMD programming to improve the performance.Comment: 7 pages, 5 figures, 4 tables, Contribution to proceedings of the 30th
International Symposium on Lattice Field Theory (Lattice 2012), June 24-29,
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