Future opportunities for hadron spectroscopy at the MPS

Longacre, R S

Title: Future opportunities for hadron spectroscopy at the MPS

Full Record
Other Related Research

Abstract

Before I go into detailed MPS experiments, I will give a summary of the status of lattice gauge calculations of glueball masses plus glueball and hybrid masses from the bag model, and the flux tube model. For the following discussion, I am going to assume that multi-quark states or molecules are best described in terms of the MIT bag model of Jaffe with its spectrum best defined by work done by R.L. Jaffe and F.E. Low using a method called The P-Matrix. Using this method one sees that all 4-quark states will appear as very broad continuum like effects that one would not associate with meson resonances, except for the S* and the delta which forms a very special threshold K/bar K/ bound systems. There is a possibility that the E(1420) may also be related to the J/sup PC/ = 1/sup + +/, qq/bar q//bar q/ spectrum having its width narrowed by a final state interaction.

Authors:: Longacre, R S

Publication Date:: Wed Dec 07 00:00:00 EST 1988

Research Org.:: Brookhaven National Lab., Upton, NY (USA)

OSTI Identifier:: 6314688

Report Number(s):: BNL-42241; CONF-880862-15
ON: DE89008492

DOE Contract Number:: AC02-76CH00016

Resource Type:: Conference

Resource Relation:: Conference: BNL workshop on glueballs, hybrids and exotic hadrons, Upton, NY, USA, 29 Aug 1988; Other Information: Portions of this document are illegible in microfiche products

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; GLUEBALLS; BAG MODEL; F1-1420 MESONS; GLUONS; HYBRID RESONANCE; J PSI-3097 MESONS; KAON MINUS-PROTON INTERACTIONS; MESONS; QUARKS; RADIATIVE DECAY; AXIAL VECTOR MESONS; BOSONS; CHARMONIUM; COMPOSITE MODELS; ELEMENTARY PARTICLES; EXTENDED PARTICLE MODEL; HADRON-HADRON INTERACTIONS; HADRONS; INTERACTIONS; KAON-NUCLEON INTERACTIONS; KAON-PROTON INTERACTIONS; MATHEMATICAL MODELS; MESON-BARYON INTERACTIONS; MESON-NUCLEON INTERACTIONS; PARTICLE INTERACTIONS; PARTICLE MODELS; POSTULATED PARTICLES; QUARK MODEL; QUARKONIUM; RESONANCE; VECTOR MESONS; 645100* - High Energy Physics- Particle Interactions & Properties-Experimental

Citation Formats


                    Longacre, R S. Future opportunities for hadron spectroscopy at the MPS.  United States: N. p., 1988. 
        Web.

Copy to clipboard


                    Longacre, R S. Future opportunities for hadron spectroscopy at the MPS.  United States.

Copy to clipboard


                    Longacre, R S. 1988.  
        "Future opportunities for hadron spectroscopy at the MPS".  United States.  https://www.osti.gov/servlets/purl/6314688.

Copy to clipboard


                    
@article{osti_6314688,

  title        = {Future opportunities for hadron spectroscopy at the MPS},

  author       = {Longacre, R S},

  abstractNote = {Before I go into detailed MPS experiments, I will give a summary of the status of lattice gauge calculations of glueball masses plus glueball and hybrid masses from the bag model, and the flux tube model. For the following discussion, I am going to assume that multi-quark states or molecules are best described in terms of the MIT bag model of Jaffe with its spectrum best defined by work done by R.L. Jaffe and F.E. Low using a method called The P-Matrix. Using this method one sees that all 4-quark states will appear as very broad continuum like effects that one would not associate with meson resonances, except for the S* and the delta which forms a very special threshold K/bar K/ bound systems. There is a possibility that the E(1420) may also be related to the J/sup PC/ = 1/sup + +/, qq/bar q//bar q/ spectrum having its width narrowed by a final state interaction.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/6314688},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Wed Dec 07 00:00:00 EST 1988},

  month        = {Wed Dec 07 00:00:00 EST 1988}

}

Copy to clipboard

Conference:

View Conference (0.21 MB)

Other availability

Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Future opportunities for hadron spectroscopy at the MPS

Conference Longacre, R - AIP Conf. Proc.; (United States)

MPS hadron spectroscopy results and proposals with K/sup /minus//p/r arrow/K/sub s/K/sub s/A/sup o/(..sigma../sup o/), anti/minus/pp/r arrow/K/sub s/K/sub s/X,K/sub s/K/sub s/..pi../sup o/, and low energy ..pi pi..scattering for glueballs are reviewed. And a summary of the status of latticegauge calculations of glueball masses plus glueball and hybrid masses from thebag model, and the flux tube model is given. (AIP)
A new possible picture of the hadron structure

Journal Article Pokrovsky, Yury - AIP Conference Proceedings

A new chiral-scale invariant version of the bag model (CSB) is developed and applied to calculations of masses and radii for single bag states. The mass formula of the CSB model contains no free parameters and connects masses and radii of the bags with fundamental QCD scales, namely with {lambda}{sub QCD}, <qq-bar>, <G{sup 2}>, and quark masses. For high angular momentum states the CSB model well describes hadron Regge trajectories and predicts thin flux tubes with R{sub tube}{approx_equal}0.25 fm close to the small tube radii introduced a posteriori in modern models. For low angular momentum states this model predicts smallmore »« less
https://doi.org/10.1063/1.56063
Glueballs in the reaction. pi. /sup -/p. -->. phi phi n at 22 GeV/c

Conference Love, W

The current favorite candidate theory of strong interactions is Quantum Chromodynamics. In this theory, bound states of two or more gluons, called glueballs, must exist. Experimentally, the detection of glueballs (all of which are massive enough to decay quickly to ordinary q anti q hadrons) is complicated by the lack of any explicit signature. The calculation of the mass of the low-lying glueballs by lattice gauge methods and the MIT bag model at present give only a rough guide to experimental searches. A popular place to look has been among the systems recoiling from photons emitted in heavy quarkonium decays.more »« less
Full Text Available
Multiquark states. II. QQ-bar and Q/sup 2/Q-bar/sup 2/ mesons

Journal Article Aerts, A; Mulders, P; de Swart, J - Phys. Rev., D; (United States)

In the previous paper we proposed a phenomenological mass formula based on the MIT bag model. We used it to describe the spectrum of baryon resonances. Now it is applied to the QQ-bar and Q/sup 2/Q-bar/sup 2/ states. Using the results for the QQ-bar meson spectrum we are able to perform a parameter-free calculation of the Q/sup 2/-Q-bar/sup 2/ (baryonium) spectrum. The other orbitally excited Q/sup 2/Q-bar/sup 2/ configurations are also studied. We find natural interpretations for the narrow NN-bar resonances, e.g., for the S (1936), which we predict to have J/sup P/C=2/sup - -/ and I=0, 1, and 2more » components.« less
https://doi.org/10.1103/PhysRevD.21.1370
Evaluation of the spectra of baryons containing two heavy quarks in a bag model

Journal Article Daheng, He; Ke, Qian; Yibing, Ding; ... - Physical Review. D, Particles Fields

In this work, we evaluate the mass spectra of baryons which consist of two heavy quarks and one light quark in the MIT bag model. The two heavy quarks constitute a heavy scalar or axial-vector diquark. Concretely, we calculate the spectra of vertical bar q(QQ{sup '})>{sub 1/2} and vertical bar q(QQ{sup '})>{sub 3/2} where Q and Q{sup '} stand for b and/or c quarks. Especially, for vertical bar q(bc)>{sub 1/2} there can be a mixing between vertical bar q(bc){sub 0}>{sub 1/2} and vertical bar q(bc){sub 1}>{sub 1/2} where the subscripts 0 and 1 refer to the spin state of themore »« less
https://doi.org/10.1103/PhysRevD.70.094004

Similar Records