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2 edition of Hyperon production in p-Be interactions at 158 GeV/c per nucleon at the WA97 CERN experiment found in the catalog.

Hyperon production in p-Be interactions at 158 GeV/c per nucleon at the WA97 CERN experiment

Paul Norman

Hyperon production in p-Be interactions at 158 GeV/c per nucleon at the WA97 CERN experiment

by Paul Norman

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  • 13 Currently reading

Published by University of Birmingham in Birmingham .
Written in English


Edition Notes

Thesis (Ph.D) - University of Birmingham, Particle Physics Group, School of Physics and Astronomy, Faculty of Science, 2000.

Statementby Paul Norman.
The Physical Object
Paginationxvi,129p. :
Number of Pages129
ID Numbers
Open LibraryOL19705351M

The particular version of the ESC-model, called ESC04 [1], describes nucleon-nucleon (NN) and hyperon-nucleon (YN) in a unified way using broken SU(3)-symmetry. Novel ingredients are the inclusion of (i) the axial-vector meson potentials, (ii) a zero in the scalar- . hyperon (hī′pə-rŏn′) n. Any of the baryons that are not nucleons, have a mass greater than that of the neutron, and are not stable. hyperon (ˈhaɪpəˌrɒn) n (General Physics) physics any baryon that is not a nucleon [C from hyper- + -on] hy•per•on (ˈhaɪ pəˌrɒn) n. any baryon with nonzero strangeness, esp. one with a relatively.

of hyperon resonances, Σ+ production polarization, and the search for exotic parti- cles produced by hyperon-induced reactions to name a few examples. The hyperon physics program is complemented by analysis of the data taken with π− and proton beams, which has also yielded first results [2]. The NA57 experiment at the CERN SPS was a dedicated experiment for the study of the strange and multistrange particle production in Pb–Pb and p–Be collisions [17]. It continued and extended the study performed by its predecessor WA97 by enlarging the available centrality region and collecting data at two beam momenta – and 40 A GeV/c.

  1. Phys Rev D Part Fields. May 1;53(9) Hyperon production in 28 GeV/c proton-proton interactions. Gottschalk EE, Avilez C, Christian DC, Church MD, Forbush M, Gutierrez G, Hartouni EP, Holmes S, Huson FR, Knapp BC, Kreisler MN, Stern BJ, Uribe J, Wehmann A, Wiencke LR, White JT. Hyperons heavy, unstable elementary particles with a mass greater than that of a nucleon (a proton or neutron), which have a baryon charge and a lifetime longer than the “nuclear time” (~ sec). Several types of hyperons are known: lambda (Λ0), sigma (Σ-, Σ0, Σ+), xi (Ξ-, Ξ°), and omega (Ω-). [The superscripts -, 0, and + to the right of.


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Hyperon production in p-Be interactions at 158 GeV/c per nucleon at the WA97 CERN experiment by Paul Norman Download PDF EPUB FB2

Going from 40 to A GeV/c, the A and -- yields are similar while the corresponding antiparticle yields increase by a factor 5. The 0 hyperon production shows a larger increase, with about a factor 3 rise for the particle and more than a factor 7 for the by: 2.

Hyperon Production in P-BE Interactions at GeV/c per nucleon at the WA97 CERN Experiment. By P I Norman. Abstract. Strange particle production is one of the most useful probes of matter under extreme conditions of temperature and density.

Due to the differences between quark masses in a Quark Gluon Plasma and hadron masses in a hadron gas Author: P I Norman. Results of the production of Ξ − and Ξ + hyperons are presented for the 10% most central Pb+Pb interactions at GeV/c per nucleon where the average number of participants N part is about This analysis utilises a global reconstruction procedure, which allows a measurement of 4π integrated yields to be made for the first by: We report the main results from experiment WA97 on the production of strange and multistrange hadrons at midrapidity in Pb+Pb, p+Pb and p+Be collisions at A GeV/c.

Hyperon production in p-BE interactions at GeV/c per nucleon at the WA97 CERN experiment. Author: Norman, Paul. ISNI: QUARK MATTER; PARTICLE PRODUCTION; PROTON REACTIONS; BERYLLIUM; LAMBDA BARYONS; XI BARYONS; OMEGA BARYONS; MASS SPECTRA; GLAUBER THEORY; HEAVY ION REACTIONS; LEAD IONS; GEV RANGE; S QUARKS.

Production of L-hyperons in inelastic p+p interactions at GeV=c tions. Secondly, the hyperon yields per nucleon are en-hanced by substantial factors in A+A collisions with respect mentum of 31 GeV=c [7–10], as well as p production in p+p collisions at GeV=c [11].

This paper presents the first NA61/SHINE results on. Production of -hyperons in inelastic p+p interactions at GeV/c NA61/SHINE Collaboration A.

Aduszkiewicz16,14,30, the hyperon yields per nucleon are enhanced by momentum of 31 GeV/c [7–10], as well as π− production in p+p collisions at 20– GeV/c [11].

This paper presents the first NA61/SHINE results on. A study of the strangeness enhancement in Lead-Lead collisions with respect to proton-induced reactions is being carried out at the CERN SPS by the WA.

Yields per wounded nucleon per unit of rapidity at central rapidity relative to p-Be as a function of the number of wounded nucleons from WA97 experiment.

with the hyperon yields in PIrPb at A GeV/c over the full NA57 centrality range; Section deals with the energy dependence of the hyperon yields, in particular, the first results at 40 A GeV/c are reported.

Abstract The relative production yields and transverse mass spectra for Λ, Λ, Ξ-andΞ + hyperons in proton-tungsten interactions are presented and compared with the WA85 results from central sulphur-tungsten interactions.

A study of the negative particle yield has also been undertaken and the ratio of Λ hyperons to negative particles has been calculated.

A limit is placed on the cross section of the production of the charmed hyperon, Lambda _{rm C}, in fixed target pp collisions at GeV/c at the Fermilab experiment E A hydrogen filled, high resolution bubble chamber, LEBC, was used as the target and vertex detector.

Reference p–Be data at 40 GeV/c were also collected. The analysis is in progress. As a reference data at A GeV/c we use the WA97 p–Be and p–Pb data samples. In the following, we are describing the results on the Ξ and Ω production at both A GeV/c and 40 A GeV/c.

Results. Inclusive production of $$\Lambda $$ -hyperons was measured with the large acceptance NA61/SHINE spectrometer at the CERN SPS in inelastic p+p interactions at beam momentum of $${\mathrm{GeV}}\!/\!c$$. The CERN experiment WA97, which studies strange particle production at central rapidity in Pb-Pb, p-Pb, p-Be collisions at A GeV/c, has already reported a pronounced enhancement of hyperon.

The WA94 collaboration uses the production of strange and anti-strange particles to investigate the properties of hot hadronic matter created in heavy-ion interactions. Λ, $$\bar \Lambda $$, Ξ− and $$\bar \Xi ^ + $$ particle yields and transverse mass spectra are presented for pS interactions and are compared with those for SS interactions and for the pW and SW interactions of WA Preliminary results from WA97 measurements on Λ, Ξ and Ω production in lead-lead and proton-lead collisions are presented, along with a comparison of WA97 proton-lead data with previous WA85 proton-tungsten results.

The ratio Ω/Ξ seems to be enhanced in lead initiated reactions compared to proton initiated reactions. Abstract Results are presented on the properties of the overlinepp interactions at GeV/ c leading to a hyperon or an antihyperon in final states with ⩾3 particles from an experiment of 35 eV/μb sensitivity.

Results are presented on neutral kaon, hyperon and antihyperon production in Pb-Pb and p-Be interactions at 40 GeV/c per nucleon.

The enhancement pattern follows the same hierarchy as. In the present paper we investigate the production of charged hyperons and antihy-perons in $$\\bar p$$ p interactions at GeV/c recorded in the 2m hydrogen bubble chamber “Ludmila”.

After correction for losses due to the kinematics of hyperon decays and for scanning efficiency we have obtained events with charged hyperons or antihyperons.

A total cross section of − + Abstract The production of Λ's and Ξ-'s in proton-antiproton collisions at and GeV c.m. energy has been studied using decays observed in the UA5 streamer chambers. The results are compared to previously published GeV data, to results from other experiments, and to four theoretical models.

@article{osti_, title = {Hyperon production from neutrino-nucleon reaction}, author = {Wu, Jia -Jun and Zou, Bing -Song}, abstractNote = {The neutrino induced hyperon production processes ν¯e/μ + p → e+/μ+ + π + Λ/Σ may provide a unique clean place for studying low energy πΛ/Σ interaction and hyperon resonances below KN threshold.Abstract.

Ξ -interactions in hydrogen and deuterium are studied close to the forward direction using the CERN charged hyperon beam. The inclusive production of ∑ *-(), Ξ - Ξ *0 (), Ξ *-(), Ξ *-(), and Ω-is observed, as well as an enhancement in the Ξ -π + channel at MeV/c momentum distributions and the production cross sections are measured for ∑ *-(HYPERON-ANTIHYPERON PRODUCTION IN PP INTERACTIONS AT AND GeV/c by Terry LeRoy Schalk A Dissertation Submitted to the Graduate Faculty in Partial Fulfillment of The Requirements for the Degree of DOCTOR OF PHILOSOPHY Major Subject: High Energy Physics Approved: I n charge of Majo Work H(or Department De of Graduat College.