Download or read book The W boson spin density matrix at OPAL written by Ian Richard Bailey and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The spin states of W bosons in e+e- -t W+W- -t q$tvc events recorded by the OPAL detector at LEP are determined by an analysis of the angular distributions of their d e cay products. This information is used to calculate polarised differential cross-sections and to search for CP-violating effects. Results are presented for W bosons produced in e+e- collisions with centre-of-mass energies between 183 GeV and 209 GeV. The average percentage of longitudinally polarised W bosons measured from the data is found to be (23.9 f 2.1 + 1.1)% compared to a Standard Model prediction of (23.9 f 0.1)%. All results are consistent with CP conservation.

Download or read book Proceedings of the 31st International Conference on High Energy Physics ICHEP 2002 written by S. Bentvelsen and published by Elsevier. This book was released on 2012-12-02 with total page 1004 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first precision measurements on CP violation in the B system are reported. Both the BELLE and the BABAR collaboration presented, among others, results for sin 2ß with much improved accuracy. Results from the Sudbury Neutrino Observatory, SNO, also deserve to be mentioned. The convincing evidence of solar neutrino oscillations had been presented by SNO prior to the conference; a full presentation was given at the conference. An incredibly precise measurement of the anomalous magnetic moment of the muon is reported, a fresh result from the Brookhaven National Laboratory. Apart from these distinct physics highlights, there are also the first results from the new Tevatron run and from the relativistic heavy ion collider RHIC. Theorists write of our ever better understanding of the Standard Model and of what might lie beyond. Risky as it is to highlight only a couple of exciting subjects, it is merely meantto whet the appetite for further reading.

Download or read book Density matrix Renormalization group Studies of Spin Boson and Fermion Systems with Symmetry protected Topological Phases written by Florian Lange and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Matrix-product-state based methods, in particular the density-matrix renormalization group, are used to numerically investigate several one-dimensional systems, focusing on models with symmetry-protected topological phases that generalize the spin-1 Haldane chain. In the first part, ground state properties such as topological order parameters and the criticality at quantum phase transitions are studied. The second part deals with dynamic properties of spin chains. Using time-dependent matrix-product-state calculations, the dynamic structure factor, and the transport properties of contacted spin chains are analyzed.

Download or read book Electroweak Physics at LEP and LHC written by Arno Straessner and published by Springer Science & Business Media. This book was released on 2010-03-31 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: During more than 10 years, from 1989 until 2000, the LEP accelerator and the four LEP experiments, ALEPH, DELPHI, L3 and OPAL, have taken data for a large amount of measurements at the frontier of particle physics. The main outcome is a thorough and successful test of the Standard Model of electroweak interactions. Mass and width of the Z and W bosons were measured precisely, as well as the Z and photon couplings to fermions and the couplings among gauge bosons. The rst part of this work will describe the most important physics results of the LEP experiments. Emphasis is put on the properties of the W boson, which was my main research eld at LEP. Especially the precise determination of its mass and its couplings to the other gauge bosons will be described. Details on physics effects like Colour Reconnection and Bose-Einstein Correlations in W-pair events shall be discussed as well. A conclusive summary of the current electroweak measurements, including low-energy results, as the pillars of possible future ndings will be given. The important contributions from Tevatron, like the measurement of the top quark and W mass, will round up the present day picture of electroweak particle physics.

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2005 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the International Conference on High Energy Physics written by and published by . This book was released on 2002 with total page 1012 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Report of the European Organization for Nuclear Research written by European Organization for Nuclear Research and published by . This book was released on 2001 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Study of Spin density Matrix in Exclusive Electroproduction of Meson at HERMES written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of the Mass and Width of the W Boson with the Opal Detector at LEP written by Robin Lovelace Coxe and published by . This book was released on 2000 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Measurement of the Mass of the W Boson Using the OPAL Detector at LEP2 written by Christopher Graham Littlewood and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of the E E W W Cross Section and the W bosom Spin Density Matrix at LEP written by Evelyne Delmeire and published by . This book was released on 2005 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of the Mass and Width of the W Boson Using the Full Data Sample from the OPAL Detector at LEP written by Francesco Spanò and published by . This book was released on 2004 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of the W Boson Mass in the W W Qqln Channel with the OPAL Detector at LEP written by Jörg Dubbert and published by . This book was released on 2000 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of the W Boson Mass in the W W QqlamdaNy Channel with the OPAL Detector at LEP written by Jörg Dubbert and published by . This book was released on 2000 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards written by and published by . This book was released on 1998 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theses on any subject submitted by the academic libraries in the UK and Ireland.

Download or read book Spin Density Calculations written by James J. Tortorelli and published by . This book was released on 1978 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of the W Boson Mass in the Measurement of the W Boson Mass in the E 1hn e 1hn W 1hn W 1hn L n63 1tnll n63 1tnl 1tn329 l Nu L L nu L Channel with the OPAL Detector at LEP written by Patricia Méndez Lorenzo and published by . This book was released on 2001 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: