TITLE

Associated Strangeness Production at COSY-TOF

AUTHOR(S)
Wagner, Marc
PUB. DATE
August 2004
SOURCE
AIP Conference Proceedings;2004, Vol. 717 Issue 1, p881
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The associated strangeness production in elementary hadron-hadron collisions is investigated exclusively in reactions of the type pp→KYN (Y=Λ,Σ) at the external COSY beam using the time-of-flight spectrometer COSY-TOF. The design of the apparatus allows a complete track reconstruction of all charged particles leading to the extraction of the total cross sections and differential observables of the mentioned reactions. Especially the Dalitz analysis of the reaction pp→K+Λp shows a strong contribution of N∗ resonances with varying strengths depending on the excess energy. Moreover, a strong evidence of a possible exotic penta quark resonance has been observed in the reaction pp→K0Σ+p at a significance level of about 5σ.
ACCESSION #
14546228

 

Related Articles

  • Development of a Spectrometer for Multiple Prompt Gamma-Ray Measurement to Identify Nuclear Levels. Kin, Tadahiro; Oshima, Masumi; Furutaka, Kazuyoshi; Koizumi, Mitsuo; Toh, Yosuke; Kimura, Atsushi // AIP Conference Proceedings;5/12/2008, Vol. 1012 Issue 1, p374 

    We developed a spectrometer for multiple prompt gamma-ray measurements to identify nuclear levels to determine neutron capture cross sections. From a test of finding candidates of 15N levels with a developing method, we found performance of the spectrometer is sufficient.

  • Ab initio investigation of the autoionization process Ar*(4s 3P2, 3P0)+Hg→(Ar–Hg)++e-: Potential energy curves and autoionization widths, ionization cross sections, and electron energy spectra Thiel, Linda; Hotop, Hartmut; Meyer, Wilfried // Journal of Chemical Physics;5/8/2005, Vol. 122 Issue 18, p184309 

    Multireference configuration interaction (MRCI) calculations have been performed for the Ar*(4s 3P2,0)+Hg collision complex. Feshbach projection based on orbital occupancy defines the entrance channel resonance states and provides their potential energy curves as well as resonance-continuum...

  • Exotic baryon searches in 800 GeV/c pp → pX. Reyes, M. A.; Christian, D. C.; Felix, J.; Gottschalk, E. E.; Gutierrez, G.; Hartouni, E. P.; Knapp, B. C.; Kreisler, M. N.; Lopez, E.; Moreno, G.; Perez, I. O.; Sosa, M.; Wang, M. H. L. S.; Wehmann, A. // AIP Conference Proceedings;2006, Vol. 814 Issue 1, p356 

    We report the results of the search for the pentaquark candidates Θ(1540) and [cap_xi](1862) using data from Fermilab experiment E690 in the reaction pp → pX at 800 GeV/c. We find no evidence for narrow baryon resonances near 1862 MeV decaying to [cap_xi]π. Also, we find no...

  • Giant dipole resonance in hot and rotating nuclei. Banerjee, Sudhee R. // AIP Conference Proceedings;Apr2013, Vol. 1524 Issue 1, p42 

    The study of Giant Dipole Resonance (GDR) even after more than 60 years of its discovery, still remains an intriguing and a very relevant topic of research particularly in the case of hot and fast rotating nuclei. Many new facets of this giant collective mode of vibration are being brought to...

  • Di-electron production in C+C and p+p collisions with HADES. Eberl, T. // European Physical Journal C -- Particles & Fields;Jan2007, Vol. 49 Issue 1, p261 

    The High Acceptance Di-Electron Spectrometer HADES at GSI, Darmstadt, has been designed for systematic studies of hadron properties inside nuclear matter. First measured mass and momentum distributions of e+e- pairs produced in 12C+12C collisions at 1 and 2 AGeV are presented and compared with...

  • The centrality dependence of transverse-energy and charged-particle multiplicity at RHIC: Statistical model analysis. Prorok, D. // European Physical Journal A -- Hadrons & Nuclei;Nov2005, Vol. 26 Issue 2, p277 

    The transverse-energy and charged-particle multiplicity at midrapidity and their ratio are evaluated in a statistical model with the longitudinal and transverse flows for different centrality bins at RHIC at $ \sqrt{{s_{NN}}}$ = 130 and 200 GeV. Full description of decays of hadron resonances is...

  • Axial-vector resonance in nuclear matter. Cabrera, D.; Jido, D.; Rapp, R.; Roca, L. // AIP Conference Proceedings;12/28/2010, Vol. 1322 Issue 1, p90 

    We summarize the work of ref. [1] where a theoretical study of the properties of the a1(1260) axial-vector resonance in a cold nuclear medium is carried out. We start from a vacuum model for the a1(1260) resonance where it is generated dynamically from the interactions of a pseudoscalar and...

  • Single Ï€0 and η Photoproduction off the Proton at CB-ELSA. Bartholomy, Olivia // AIP Conference Proceedings;2004, Vol. 717 Issue 1, p255 

    Photoproduction of mesons provides an opportunity to access the properties of nucleon resonances. The study is complementary to πN scattering from which most known properties of resonances have been extracted. Many resonances predicted by quark model calculations have not been observed...

  • A Dependence of Inclusive Pion Double Charge Exchange. Abramov, B. M.; Alvarez-Ruso, L.; Borodin, Yu. A.; Bulychjov, S. A.; Vacas, M. J. Vicente; Dukhovskoy, I. A.; Krutenkova, A. P.; Kulikov, V. V.; Matsyuk, M. A.; Turdakina, E. N. // Physics of Atomic Nuclei;Aug2005, Vol. 68 Issue 8, p1283 

    The A dependence of the forward cross section for inclusive pion double charge exchange on nine target nuclei from 6Li to 209Bi at T0 = 0.59 GeV, as well as the cross section for 6Li, 7Li, and 12C nuclei at T0 = 0.59, 0.75, and 1.1 GeV, was measured with the 3-m magnetic spectrometer of the...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics