Download or read book Polarized J J psi from XcJ and psi Decays at the Tevatron written by B. A. Kniehl and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Polarized J y J psi from XcJ and Y psi Decays at the Tevatron written by Bernd A. Kniehl and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Polarized J y63 J psi from X 1tnc 1tnJ and y63 psi Decays at the Tevatron written by Bernd A. Kniehl and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Polarization of Prompt J y63 J psi at the Tevatron written by Eric Braaten and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book J J psi Polarization at Tevatron and LHC written by M. Butenschön and published by . This book was released on 2012 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Polarization of Prompt J J psi at the Tevatron written by Eric Braaten and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Measurement of the Polarization of J Psi Mesons Produced in High energy Proton antiproton Collisions written by Robert J. Cropp and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents an analysis of the polarization of ' J'/ y mesons produced in 'pp¢' collisions at a centre-of-mass energy of 1.8 TeV. The collisions were produced by the Fermilab Tevatron collider, the world's highest energy particle accelerator. The data were recorded by the Collider Detector at Fermilab during Run 1 of the Tevatron in 1992-1995. The 'J'/ y meson consists of a charm quark and its antiquark, and is the best-known type of quarkonium, the bound state of a heavy quark-antiquark pair. The measurement of the production polarization of 'J'/ y mesons and other quarkonia provides a test of quarkonium production models. The study of quarkonium production is important for understanding the strong nuclear force between quarks. The strong force is one of the four known fundamental forces, being responsible for binding quarks into hadrons and holding atomic nuclei together. The polarization of centrally produced 'J'/ y mesons has been measured over the transverse momentum range 4-20 GeV/'c', using an analysis of the angular distribution of their decays to [mu]+[mu]-. Decay length measurements made by CDF's silicon vertex detector allowed the promptly produced ' J'/ y mesons to be separated from those produced in ' B'-hadron decays. The prompt and 'B'-decay polarization parameters, Ã'P' and Ã' B', have both been measured. The measured value of Ã' P' is positive at intermediate 'PT', but is consistent with zero above 12 GeV/'c', in apparent disagreement with predictions of the NRQCD factorization formalism.