The Production Of J Psi And Associated Particles In The Collision Of 530 Gev C Protons And Pions With Nuclear Targets PDF Download
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Release | : 1989 |
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Download The Production of J//psi/ and Associated Particles in the Collision of 530 GeV/c Protons and Pions with Nuclear Targets Book in PDF, ePub and Kindle
We have studied the production of the J/? and associated particles using the E672/E706 spectrometer at Fermilab. Preliminary results are presented from the first run in 1987--1988 with 530 GeV/c p/? and ?/sup −/ beams on a variety of nuclear targets. The A-dependance of J/? production with /pi//sup /minus// beam was found to agree with an A/sup ?/ parametrization with /alpha/ = 0.85 /plus minus/ 0.06 for X/sub F/ > 0.1. We have found that (41 /plus minus/ 22)% of the J//psi/'s produced in the p//pi//sup +/ beam are consistent with the radiative decay /chi/ /yields/J//psi/+?. The future analysis goals of the experiment are also discussed. 10 refs., 9 figs.
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Total Pages | : 840 |
Release | : 1990 |
Genre | : Power resources |
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Download Energy Research Abstracts Book in PDF, ePub and Kindle
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Total Pages | : 848 |
Release | : 1989 |
Genre | : Power resources |
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Download ERDA Energy Research Abstracts Book in PDF, ePub and Kindle
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Total Pages | : 716 |
Release | : 1990 |
Genre | : Nuclear physics |
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Download High Energy Physics Index Book in PDF, ePub and Kindle
Author | : V. Abramov |
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Total Pages | : 0 |
Release | : 1991 |
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Download PROPERTIES OF J/PSI PRODUCTION IN PI- -BE AND P-BE COLLISIONS AT 530 GEV/C. Book in PDF, ePub and Kindle
Author | : European Council for Nuclear Research. Library |
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Total Pages | : 14 |
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Genre | : Nuclear physics |
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Download Preprints and Reports on Display in the CERN Library Book in PDF, ePub and Kindle
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Total Pages | : 492 |
Release | : 1993 |
Genre | : Particles (Nuclear physics) |
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Download A Guide to Experimental Elementary Particle Physics Literature 1988-1992 Book in PDF, ePub and Kindle
Author | : Robert J. Cropp |
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Total Pages | : 0 |
Release | : 2000 |
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Download A Measurement of the Polarization of J/Psi Mesons Produced in High-energy Proton-antiproton Collisions Book in PDF, ePub and Kindle
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.
Author | : Stephen Alan Chessin |
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Total Pages | : 354 |
Release | : 1983 |
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Download Pion Production at 180? in Nucleus-nucleus Collisions Book in PDF, ePub and Kindle
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Total Pages | : 19 |
Release | : 2008 |
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Download Kinematic Distributions and Nuclear Effects of J/ψ [J-psi] Production in 920 GeV Fixed-target Proton-nucleus Collisions Book in PDF, ePub and Kindle