نتایج جستجو برای: mass measurement
تعداد نتایج: 890521 فیلتر نتایج به سال:
Mass measurements of objects that decay into hadronic jets, such as the top quark, is shown to be improved by using a variant of the kt jet algorithm in place of standard cone algorithms. The possibility and importance of better estimating the neutrino component in tagged b jets is demonstrated. These techniques will also be useful in the search for Higgs → bb̄. Typeset using REVTEX
We present a measurement of the W boson mass in W-->e(nu) decays using 1 fb-1 of data collected with the D0 detector during Run II of the Fermilab Tevatron collider. With a sample of 499830 W-->e(nu) candidate events, we measure M(W)=80.401+/-0.043 GeV. This is the most precise measurement from a single experiment.
Beijing The mass of the ~ lepton has been measured at the Beijing Electron Positron Collider using the Beijing Spectrometer. A search near threshold for e+e-~ ~+~-was performed. Candidate events were identified by requiring that one T decay via ~ ~ ev>, and the other via 74 pvti. The mass value, obtained from a fit to the energy dependence of the T+7-cross section, is m, = 1776.9~~:~ + 0.2 MeV....
We show that binary microlensing events with three well-measured peaks (two caustic crossings plus a cusp approach) can yield determinations of both the projected Einstein radius r̃E and the angular Einstein radius θE, and so the lens mass M = c2(4G)−1r̃EθE. To a certain extent, rotation of the binary can mimic the effects of parallax, but should often be possible to disentangle parallax from rot...
We present a precision measurement of the top-quark mass using the full sample of Tevatron √s = 1.96 TeV proton-antiproton collisions collected by the CDF II detector, corresponding to an integrated luminosity of 8.7 fb(-1). Using a sample of tt¯ candidate events decaying into the lepton+jets channel, we obtain distributions of the top-quark masses and the invariant mass of two jets from the W ...
J. P. Lees, V. Poireau, V. Tisserand, E. Grauges, A. Palano, G. Eigen, B. Stugu, D.N. Brown, L. T. Kerth, Yu. G. Kolomensky, M. J. Lee, G. Lynch, H. Koch, T. Schroeder, C. Hearty, T. S. Mattison, J. A. McKenna, R. Y. So, A. Khan, V. E. Blinov, A. R. Buzykaev, V. P. Druzhinin, V. B. Golubev, E. A. Kravchenko, A. P. Onuchin, S. I. Serednyakov, Yu. I. Skovpen, E. P. Solodov, K.Yu. Todyshev, A.N. Y...
F. Abe,17 H. Akimoto,39 A. Akopian,31 M. G. Albrow,7 A. Amadon,5 S. R. Amendolia,27 D. Amidei,20 J. Antos,33 S. Aota,37 G. Apollinari,31 T. Arisawa,39 T. Asakawa,37 W. Ashmanskas,18 M. Atac,7 P. Azzi-Bacchetta,25 N. Bacchetta,25 S. Bagdasarov,31 M. W. Bailey,22 P. de Barbaro,30 A. Barbaro-Galtieri,18 V. E. Barnes,29 B. A. Barnett,15 M. Barone,9 G. Bauer,19 T. Baumann,11 F. Bedeschi,27 S. Behren...
With the publication of the results of the landmark 9-year Diabetes Control and Complications Trial (DCCT), the importance of Hb A1c/glycohemoglobin testing in diabetes was firmly established. The DCCT showed, at least in patients with insulin-dependent diabetes mellitus, that the risk for development and progression of the chronic complications of diabetes is closely related to the degree of m...
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