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in creator/contributor: "Aoki, S."  
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Workshop on Precision Measurements of $\alpha_s$

Description: These are the proceedings of the Workshop on Precision Measurements of {alpha}{sub s} held at the Max-Planck-Institute for Physics, Munich, February 9-11, 2011. The workshop explored in depth the determination of {alpha}{sub s}(m{sub Z}) in the {ovr MS} scheme from the key categories where high precision measurements are currently being made, including DIS and global PDF fits, {tau}-decays, electro-weak precision observables and Z-decays, event-shapes, and lattice QCD. These proceedings contain… more
Date: October 1, 2011
Creator: Bethke, Siegfried; /Munich, Max Planck Inst.; Hoang, Andre H.; U., /Vienna; Kluth, Stefan; /Munich, Max Planck Inst. et al.
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Partner: UNT Libraries Government Documents Department
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Measurements of Total and Partial Charge-changing Cross Sections for 200-400 MeV/nucleon 12C in Water and Polycarbonate

Description: We have studied charged nuclear fragments produced by 200 - 400 MeV/nucleon carbon ions, interacting with water and polycarbonate, using a newly developed emulsion detector. Total and partial charge-changing cross sections for the production of B, Be, and Li fragments were measured and compared with both previously published measurements, and model predictions. This study is of importance for validating and improving carbon ion therapy treatment planning systems, and for estimating the radiolog… more
Date: November 10, 2011
Creator: Toshito, T.; Kodama, K.; Sihver, L.; Yusa, K.; Ozaki, M.; Amako, K. et al.
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Partner: UNT Libraries Government Documents Department
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THERMODYNAMICS OF TWO-FLAVOR LATTICE QCD WITH AN IMPROVED WILSON QUARK ACTION AT NON-ZERO TEMPERATURE AND DENSITY.

Description: The authors report the current status of the systematic studies of the QCD thermodynamics by lattice QCD simulations with two flavors of improved Wilson quarks. They evaluate the critical temperature of two flavor QCD in the chiral limit at zero chemical potential and show the preliminary result. Also they discuss fluctuations at none-zero temperature and density by calculating the quark number and isospin susceptibilities and their derivatives with respect to chemical potential.
Date: November 14, 2006
Creator: Maezawa, Y.; Aoki, S.; Ejiri, S.; Hatsuda, T.; Ishii, N.; Kanaya, K. et al.
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Partner: UNT Libraries Government Documents Department
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Charge Identification of Highly Ionizing Particles in Desensitized Nuclear Emulsion Using High Speed Read-Out System

Description: We performed an experimental study of charge identification of heavy ions from helium to carbon having energy of about 290 MeV/u using an emulsion chamber. Emulsion was desensitized by means of forced fading (refreshing) to expand a dynamic range of response to highly charged particles. For the track reconstruction and charge identification, the fully automated high speed emulsion read-out system, which was originally developed for identifying minimum ionizing particles, was used without any mo… more
Date: May 10, 2006
Creator: Toshito, T.; Kodama, K.; Yusa, K.; Ozaki, M.; Amako, K.; Kameoka, S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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THERMODYNAMICS AND HEAVY-QUARK FREE ENERGIES AT FINITE TEMPERATURE AND DENSITY WITH TWO FLAVORS OF IMPROVED WILSON QUARKS.

Description: Thermodynamics of two-flavor QCD at finite temperature and density is studied on a 16{sup 3} x 4 lattice, using a renormalization group improved gauge action and the clover improved Wilson quark action. In the simulations along lines of constant m{sub PS}/m{sub V}, we calculate the Taylor expansion coefficients of the heavy-quark free energy with respect to the quark chemical potential ({mu}{sub q}) up to the second order. By comparing the expansion coefficients of the free energies between qua… more
Date: July 30, 2007
Creator: Maezawa, Y.; Hatsuda, T.; Aoki, S.; Kanaya, K.; Ejiri, S.; Ishii, N. et al.
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Partner: UNT Libraries Government Documents Department
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Request for a Test Exposure of OPERA Targets in the NuMI Beam

Description: We request to use the Fermilab NuMI neutrino beam in the MINOS Near Detector Hall to produce neutrino interactions in two separate detector arrangements using prototype target bricks designed for the OPERA experiment. OPERA is scheduled to to begin taking data in the CERN Neutrinos to Gran Sasso (CNGS) beam in 2006. The proposed test set up would be located just upstream of the MINOS Near Detector. The data will be used to validate the OPERA analysis scheme and to study backward particle produc… more
Date: November 1, 2004
Creator: Kodama, K.; Tzanakos, G.; Baller, B.; Lundberg, B.; Rameika, R.; Saoulidou, N. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chiral gauge theory on a lattice: Are anomalous gauge theories renormalizable

Description: We discuss the quantization of chiral gauge theories by lattice regularization, carefully treating the effects of the chiral anomaly. We derive a chiral gauge invariant lattice fermion action from a chiral gauge variant Wilson fermion action without changing its partition function. By lattice power counting for this formula we show that anomalous gauge theories as well as anomaly-free gauge theories are renormalizable even in 4-dimensions. Some applications and implications of this result and p… more
Date: June 1, 1988
Creator: Aoki, S.
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Partner: UNT Libraries Government Documents Department
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ON-SHELL IMPROVEMENT OF THE MASSIVE WILSON QUARK ACTION.

Description: We review a relativistic approach to the heavy quark physics in lattice QCD by applying a relativistic O(a) improvement to the massive Wilson quark action on the lattice. After explaining how power corrections of m{sub Q}a can be avoided and remaining uncertainties are reduced to be of order (a{Lambda}{sub QCD}){sup 2}, we demonstrate a determination of four improvement coefficients in the action up to one-loop level in a mass dependent way. We also show a perturbative determination of mass dep… more
Date: April 1, 2005
Creator: Aoki, S.; Kayaba, Y.; Kuramiashi, Y. & Yamada, N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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