Download or read book The Left right Forward backward Asymmetry for B Quarks at the SLD written by David Charles Williams and published by . This book was released on 1994 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Left right Forward backward Asymmetry for B Quarks at the SLD written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Left right Forward backward Asymmetry of Heavy Quarks Measured with Jet Charge and with Leptons at the SLD written by and published by . This book was released on 1994 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present direct measurements of the left-right asymmetry of b- and c-quarks from the decay of Z° bosons produced in the annihilation of longitudinally polarized electrons and unpolarized positrons. Two complementary techniques are presented: (1) Z° --> b{bar b} decays are tagged using track impact parameters with b{bar b} discrimination provided by momentum-weighted track charge; (2) semileptonic b-decays are tagged using high p and p{sub T} muons and electrons. The preliminary results from their 1993 data sample are: A{sub b} = 0.93 " 0.13 " 0.13 for the jet charge and A{sub b} = 0.93 " 0.14 " 0.09, and A{sub c} = 0.40 " 0.23 " 0.20 for the leptons, where the first error is statistical and the second systematic.

Download or read book Measurement of the Polarized Forward backward Asymmetry of B Quarks at SLD written by and published by . This book was released on 1997 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a direct measurement of the parity-violating parameter A{sub b} using the Left-Right Forward-Backward asymmetry of b{anti b} pair production at the Z° pole. The measurement was done at the Stanford Linear Accelerator Center (SLAC) using data from the SLAC Large Detector (SLD). The authors take advantage of the high polarization of the SLAC Linear Collider (SLC) electron beam. To identify heavy flavor decays of the Z°, they use a b-tag based on the topological reconstruction of the mass of the B vertex. Discrimination between the b and {anti b} quark directions is provided by a self-calibrating jet-charge technique. This technique allows calibration of the analyzing power from data and gives a much reduced model dependence. Based on the 1994--95 (1993) sample of 100,000 (50,000) Z° decays recorded with an electron beam polarization of P{sub e} = 77% (63%), they have obtained A{sub b} = 0.911 " 0.045(stat) " 0.045(syst). This value is in goo d agreement with the Standard Model.

Download or read book A Measurement of the Left right Forward backward Asymmetry of E e arrow Cc at SLD Using D Or and D Or Mesons written by Liu, Xi and published by . This book was released on 1996 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Left right Forward backward Asymmetry for C and B Quarks written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of the Polarized Forward backward Asymmetry of B Quarks at SLD written by Victor V. Serbo and published by . This book was released on 1997 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of the Polarized Forward backward Asymmetry of B Quarks Using Momentum weighted Track Charge at SLD written by and published by . This book was released on 1995 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a direct measurement of the parity-violating parameter A{sub b} by analyzing the polarized forward-backward asymmetry of b quarks in ee− --> Z° --> b{bar b}. Data were taken at the Stanford Linear Accelerator Center (SLAC), with the Stanford Large Detector (SLD), which records the products of ee− interactions at a center of mass energy (square root)s = 91.2 GeV/c2 at the SLAC Linear Collider (SLC). The SLC/SLD experimental apparatus provides a unique and ideal environment for measuring electroweak asymmetries. Heavy flavor decays of the Z° were identified inclusively by taking advantage of the long lifetime of B hadrons, the small, stable SLC beam spot, and SLD's precise tracking detectors. Two analysis techniques for measuring A{sub b} are presented: a binned fit to the left-right forward-backwards asymmetry of tagged events signed with momentum-weighted track charge, and a self-calibrating maximum-likelihood technique using momentum-weighted charge from the two hemispheres in each tagged event. From our 1994-1995 sample of 3.6 pb−1, having a luminosity-weighted average e− polarization of 77.3%, and our 1993 sample of 1.8 pb−1, having a luminosity-weighted polarization of 63.1%, we obtain A{sub b} = 0.848 " 0.046(stat.) " 0.050(syst.).

Download or read book A Measurement of the Left right Forward backward Asymmetry for Charm Quarks Using D sup and D Mesons written by and published by . This book was released on 1994 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Longitudinal polarization of the SLC e− beam allows a direct measurement of the left-right, forward-backward asymmetry of c-quarks to be made with the SLD. Events from Z° --> c{bar c} are tagged using fully and partially reconstructed decays of D{sup *+} mesons, and fully reconstructed decays of D mesons. The authors measure A{sub c} = 0.77 " 0.22(stat.) " 0.10(syst.).

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lepton photon 01 Proceedings Of The Xx International Symposium On Lepton And Photon Interactions At High Energies written by Fabio Bossi and published by World Scientific. This book was released on 2002-08-08 with total page 661 pages. Available in PDF, EPUB and Kindle. Book excerpt: This important book covers topics that are of major interest to the high energy physics community, including the most recent results from flavour factories, dark matter and neutrino physics. In addition, it considers future high energy machines.

Download or read book High Energy Physics 99 Proceedings of the International Europhysics Conference on High Energy Physics Tampere Finland 15 21 July 1999 written by K Huitu and published by CRC Press. This book was released on 2000-01-01 with total page 1112 pages. Available in PDF, EPUB and Kindle. Book excerpt: High Energy Physics 99 contains the 18 invited plenary presentations and 250 contributions to parallel sessions presented at the International Europhysics Conference on High Energy Physics. The book provides a comprehensive survey of the latest developments in high energy physics. Topics discussed include hard high energy, structure functions, soft interactions, heavy flavor, the standard model, hadron spectroscopy, neutrino masses, particle astrophysics, field theory, and detector development.

Download or read book The Standard Theory of Particle Physics written by Luciano Maiani and published by World Scientific Publishing Company. This book was released on 2016-08-25 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book gives a quite complete and up-to-date picture of the Standard Theory with an historical perspective, with a collection of articles written by some of the protagonists of present particle physics. The theoretical developments are described together with the most up-to-date experimental tests, including the discovery of the Higgs Boson and the measurement of its mass as well as the most precise measurements of the top mass, giving the reader a complete description of our present understanding of particle physics.

Download or read book XX International Symposium on Lepton and Photon Interactions at High Energies written by Juliet Lee-Franzini and published by World Scientific. This book was released on 2002 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: This important book covers topics that are of major interest to the high energy physics community, including the most recent results from flavour factories, dark matter and neutrino physics. In addition, it considers future high energy machines.

Download or read book Physics With High Energy Colliders Proceedings Of 22nd Ins International Symposium written by Sachie Yamada and published by World Scientific. This book was released on 1995-04-26 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent results from all types of high energy colliders (e⁺e⁻, pp, ep) are presented from the view point of electroweak interaction and QCD/Jet physics together with related phenomenological reviews. Expected physics at future colliders, both being built or planned, are also discussed including e+e- linear collider, pp collider and heavy ion collider.

Download or read book Particle Physics At The Start Of The New Millenniums Procs Of The Ninth Lomonosov Conf On Elementary Particle Physics written by Alexander I Studenikin and published by World Scientific. This book was released on 2001-05-18 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings volume deals with a wide variety of topics in particle physics, in both theory and experiment.

Download or read book Physics In Collison Proceedings Of The Xvii International Conf written by Helen F Heath and published by World Scientific. This book was released on 1998-04-30 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: 50 years after the discovery of the pion in Bristol, the conference “Physics in Collision XVII” showed how far particle physics has come. There were hints of new physics at HERA and neutrino oscillations as well as the latest results from LEP and the Tevatron. The proceedings present the current status and future direction of particle physics.