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Book Determination of Net Premium Sub S and the Z 0 Mass from Measurements of the Total Hadronic Cross Section in E e  Annihilation

Download or read book Determination of Net Premium Sub S and the Z 0 Mass from Measurements of the Total Hadronic Cross Section in E e Annihilation written by G.D. Agostini and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Determination of   s and the Z   mass from measurements of the total hadronic cross section in e e 346 annihilation  ee annihilation

Download or read book Determination of s and the Z mass from measurements of the total hadronic cross section in e e 346 annihilation ee annihilation written by Giulio D'Agostini and published by . This book was released on 1989 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Determination of  alpha s  s  and sin2Hw  sinw  from measurements of the total hadronic cross section in e e   ee  annihilation

Download or read book Determination of alpha s s and sin2Hw sinw from measurements of the total hadronic cross section in e e ee annihilation written by Deutsches Elektronen-Synchrotron (Hamburg) and published by . This book was released on 1986 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Determination of  alpha   subscript S  and Sin2 theta w from Measurements of the Total Hadronic Cross Section in E e  Annihilation

Download or read book Determination of alpha subscript S and Sin2 theta w from Measurements of the Total Hadronic Cross Section in E e Annihilation written by CELLO Collaboration and published by . This book was released on 1986 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Measurement of the Total Cross Section for Hadronic Production by Ee    Annihilation at Energies Between 2 5 GeV

Download or read book Measurement of the Total Cross Section for Hadronic Production by Ee Annihilation at Energies Between 2 5 GeV written by Derrick Kong and published by . This book was released on 2000 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Determination Of alpha  sub S  M sub Z  sup 2  from Hadronic Event Shape Observables in E sup  e sup minus  Annihilation

Download or read book Determination Of alpha sub S M sub Z sup 2 from Hadronic Event Shape Observables in E sup e sup minus Annihilation written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most important tasks in high energy physics is the precise determination of the strong coupling[alpha][sub s](M[sub Z][sup 2]). Not only does measurement of[alpha][sub s](M[sub Z][sup 2]) in different hard processes and at different hard scales Q provide a fundamental test of the theory of strong interactions, Quantum Chromodynamics (QCD), but it also allows constraints on extensions to the Standard Model of elementary particles. Here, the determination of[alpha][sub s](M[sub Z][sup 2]) using O([alpha][sub s][sup 2]) calculations of hadronic event shape observables in e[sup+]e[sup[minus]] annihilation is reviewed. The large scatter among[alpha][sub s](M[sub Z][sup 2]) values determined from different observables may be interpreted as arising from the effect of uncalculated higher-order contributions. The application of optimized perturbation theory and Pade approximants in an attempt to reduce this effect is discussed.

Book Some Properties of the Psi 3 7  Resonance  and Features of the Total Hadronic Cross Section in Ee    Annihilation from 2 4 GeV to 5 0 GeV C m  Energy

Download or read book Some Properties of the Psi 3 7 Resonance and Features of the Total Hadronic Cross Section in Ee Annihilation from 2 4 GeV to 5 0 GeV C m Energy written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book A Precision Measurement of the Z sup 0  Lineshape Parameters for the Process Z sup 0   r arrow   tau  sup    tau  sup  minus

Download or read book A Precision Measurement of the Z sup 0 Lineshape Parameters for the Process Z sup 0 r arrow tau sup tau sup minus written by and published by . This book was released on 1996 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation, a measurement of the partial decay width of the process Z° →??{sup −} using data collected during 1993 and 1994 at the OPAL detector at CERN is described. The cross sections of this process at three center-of-mass energies near the Z° resonance were determined, and from a fit to those cross sections, the mass of the Z°, its total decay width and its partial decay width into?+?{sup −} final states were determined as M{sub Z} = 91.183 ± 0.020 GeV,?{sub tot} = 2.514 ± 0.018 GeV and?{sub??} = 84.54 ± 0.59 MeV. Using published results for M{sub Z}, and?{sub tot} with higher accuracy, a value for the partial decay width of?{sub??} = 84.02 ± 0.20 MeV was obtained. Further using published results for the decay width of the Z° into quark pair final states, the invisible decay width of the Z° was determined as?{sub inv} = 496.9 ± 4.1 MeV, and the number of neutrino generations was determined as N{sub?} = 2.974 ± 0.025(exp) ± 0.007 (m{sub top}, M{sub Higgs}). All results were found to be in good agreement with the Standard Model predictions and were consistent with the assumption of lepton universality within the Standard Model framework.

Book Precise Measurement of the Total Cross Section

Download or read book Precise Measurement of the Total Cross Section written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This note will analyze the problems involved in making a precise measurement of the total cross secton for ee− annihilation into hadrons. Based on this analysis, we will suggest that a relatively simple non-magnetic device employing calorimetry over a 4.pi. solid angle is the optimum apparatus for such a measurement. We will describe one such device in some detail.

Book E  E  to Hadrons Cross Sections at BaBar

Download or read book E E to Hadrons Cross Sections at BaBar written by and published by . This book was released on 2011 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present an overview of cross-section measurements at BABAR. In e{sup {+-}} → few-body processes at a center-of-mass energy E{sub CM} = 10.6 GeV we make new QCD tests and the first observation of two-virtual-photon annihilations into hadrons. Studies at lower √s, using radiative return, yield new/improved data on spectroscopy, form factors and the total hadronic cross section, an important input to calculations of g{sub {mu}}-2 and [alpha](M{sub Z}). We also present an inclusive measurement of the running of [alpha].