Download or read book A J psi Polarization Measurement with the PHENIX Muon Arms in Proton proton Collisions at Center of Mass Energy of 200 GeV at RHIC written by Hai Qu and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A measurement of J/[psi] polarization has been performed for 200 GeV proton+proton collisions with the PHENIX Muon Arms at RHIC. The results from the current data show no polarization within the PHENIX acceptance range. The results are consistent with the current model predictions and other experimental measurements.
Download or read book The PHENIX Muon Spectrometer and J PSI Production in 200 GeV Center of Mass Energy Proton proton Collisions at RHIC written by Andrew S. Hoover and published by . This book was released on 2003 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of Transverse Single spin Asymmetries in J psi Symbol Production in Polarized Proton proton Collisions at Center of Mass Energy 200 GeV written by Hussein Faleh Al-Ta'ani and published by . This book was released on 2010 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Precision Measurement of the Longitudinal Double spin Asymmetry for Inclusive Jet Production in Polarized Proton Collisions at u221A s written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report a new measurement of the midrapidity inclusive jet longitudinal double-spin asymmetry, ALL, in polarized pp collisions at center-of-mass energy √s = 200 GeV. The STAR data place stringent constraints on polarized parton distribution functions extracted at next-to-leading order from global analyses of inclusive deep-inelastic scattering (DIS), semi-inclusive DIS, and RHIC pp data. Lastly, the measured asymmetries provide evidence at the 3? level for positive gluon polarization in the Bjorken-x region x > 0.05 .
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.
Download or read book J psi Production Properties from Polarized Proton proton Collisions at 200 GeV written by Ahmed F. Al-Jamel and published by . This book was released on 2004 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of Inclusive Forward Neutral Pion Production in 200 GeV Polarized Proton proton Collisions at RHIC written by Yiqun Wang and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inclusive Cross Section of J psi Particles in the Far Forward Direction in Proton antiproton Collisions at Center of Mass Energy Equal to 1 8 TeV written by Joseph Robert Steele and published by . This book was released on 2000 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Longitudinal Double spin Asymmetry of Forward Neutral Pions from 510 GeV Polarized Proton proton Collisions at STAR written by Christopher John Dilks and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Longitudinally polarized proton-proton scattering experiments provide access to the gluon polarizationcontribution to the overall proton spin via a measurement of the longitudinal double-spin asymmetry,$A_{LL}$. During RHIC data-taking periods in 2012 and 2013, a significant sample of $\pi^0$s scattered inthe forward direction was acquired from proton-proton collisions with a center-of-mass energy of 510 GeVand beam polarizations of $\sim 55\%$. The $\pi^0$ kinematics were measured by the STAR Forward MesonSpectrometer, an electromagnetic calorimeter spanning a forward pseudorapidity range of $2.5
Download or read book Measurements of Lamba and Anti Lambda Polarization in Longitudinally Polarized Proton Proton Collisions at SQRT S NN written by and published by . This book was released on 2005 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Preliminary results for the longitudinal polarization of A and hyperons in longitudinally polarized proton-proton collisions at √s = 200 GeV are presented. The [Lambda]({bar [Lambda]}) candidates are reconstructed at mid-rapidity (
Download or read book A Measurement of the Polarization of J Psi Mesons Produced in High energy Proton antiproton Collisions written by 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 Longitudinal Spin Transfer in Inclusive Lambda and Lambda Barproduct Ion in Polarized Proton proton Collisions at Sqrt S written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This contribution reports on a proof-of-principle measurement of the longitudinal spin transfer D{sub LL} in inclusive [Lambda] and [Lambda] production in polarized proton-proton collisions at a center of mass energy √s = 200 GeV. The data sample consists of about 3 x 106 minimum bias events collected in the year 2005 by the STAR experiment at RHIC with proton beam polarizations of up to 50%. The [Lambda]({bar [Lambda]}) candidates are reconstructed at mid-rapidity (
Download or read book Measurement of the Polarization Parameter in Proton proton Elastic Scattering for Beam Momenta Ranging from 20 GeV c to 200 GeV c written by Marjorie Blasius Corcoran and published by . This book was released on 1977 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Elastic Proton proton Scattering at RHIC written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Here we describe elastic proton+proton (p+p) scattering measurements at RHIC in p+p collisions with a special optics run of ?* ≈ 21 m at STAR, at the center-of-mass energy √s = 200 GeV during the last week of the RHIC 2009 run. We present preliminary results of single and double spin asymmetries.
Download or read book Measurement of the Transverse Single spin Asymmetry for Mid rapidity Production of Neutral Pions in Polarized P p Collisions at 200 GeV Center of mass Energy written by Christine Aidala and published by . This book was released on 2006 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book De germanorum antiquorum idolotaria ad loca quaedam Taciti written by and published by . This book was released on 1663 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book polarizing parameter in elastic proton proton scatterig from 0 75 to 2 84 gev written by horer a . neal, michael j. longo and published by . This book was released on 1967 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
