231 research outputs found
Precision Electroweak Measurements
Recent electroweak precision measurements from e+e- and pbarp colliders are
presented. Some emphasis is placed on the recent developments in the heavy
flavor sector. The measurements are compared to predictions from the Standard
Model of electroweak interactions. All results are found to be consistent with
the Standard Model. The indirect constraint on the top quark mass from all
measurements is in excellent agreement with the direct Mt measurements. Using
the world's electroweak data in conjunction with the current measurement of the
top quark mass, the constraints on the Higgs mass are discussed.Comment: 20 pages, 17 figures, Latex. Talk given at the Meeting of the
Division of Particles and Fields (DPF96), Minneapolis, August 10-15, 1996 (to
be published in the proceedings
Higgs Boson and Z Physics at the First Muon Collider
The potential for the Higgs boson and Z-pole physics at the first muon
collider is summarized, based on the discussions at the ``Workshop on the
Physics at the First Muon Collider and at the Front End of a Muon Collider'' .Comment: Working group summary (17 pages, 8 figs), to appear in the
Proceedings of ``Workshop on the Physics at the First Muon Collider and at
the Front End of a Muon Collider'
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Vertically integrated pixel readout chip for high energy physics
We report on the development of the vertex detector pixel readout chips based on multi-tier vertically integrated electronics for the International Linear Collider. Some testing results of the VIP2a prototype are presented. The chip is the second iteration of the silicon implementation of the prototype, data-pushed concept of the readout developed at Fermilab. The device was fabricated in the 3D MIT-LL 0.15 {micro}m fully depleted SOI process. The prototype is a three-tier design, featuring 30 x 30 {micro}m{sup 2} pixels, laid out in an array of 48 x 48 pixels
From optical to X-ray ghost imaging
Recent advances in ghost imaging techniques and X-ray sources such as synchrotrons and, more recently, X-ray free-electron lasers (XFEL) have made X-ray ghost imaging a growing topic of interest. One specific type of ghost imaging utilizes thermal radiation and the measurement of intensity fluctuation correlation to form a true image without the need of a lens. This technique allows for much higher resolution than traditional X-ray imaging for a mesoscopic or even a microscopic object. In addition to this benefit of not requiring a lens, a surprising experiment has shown that, when set up correctly, this type of ghost imaging can provide clear images through the measurement of intensity fluctuation correlation when traditional images through measurements of intensity are blurred due to optical turbulence and vibrations. This turbulence-free technique will help maintain the high resolution of X-ray ghost imaging. How is an image formed from fluctuations in light? And what makes it turbulence-free? Using the concept of two-photon interference, this article provides an introduction to these fundamentally interesting concepts and X-ray ghost imaging
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