Systematics of quark – antiquark states and scalar exotic mesons

V.V. Anisovich
B.P. Konstantinov St. Petersburg Institute of Nuclear Physics, Russian Academy of Sciences, Gatchina, Leningrad Region, Rusian Federation

Analysis of experimental data from the Crystal Barrel Collaboration on the in-flight p \-{p} annihilation into mesons revealed a large group of mesons in the 1900-2400-MeV range, allowing the systematization of quark-antiquark states in the (n, M²)- and (J, M²)-planes (n being the radial quantum number, and J the spin of a meson of mass M). From the data, meson trajectories in these planes are approximately linear and have a universal slope. A detailed discussion of the scalar meson sector is given for which, based on a recent K-matrix analysis, the nonet classification of quark-antiquark states places two scalar nonets — the basic nonet and that of the first radial excitation — in the range below 2000 MeV. Two isospin 0 scalar states — the broad resonance f₀(1200-1600) and the light σ-meson — do not fit into the quark-antiquark classification, i.e., are exotic. The ratios between the coupling constants for hadronic decays to the ππ, K \-{K} , ηη and ηη’ states point to the gluonium nature of the broad state f₀(1200-1600).

PACS: 12.38.−t, 12.39.Mk, 14.40.−n (all)
DOI: 10.1070/PU2004v047n01ABEH001333
URL: https://ufn.ru/en/articles/2004/1/d/
Web of Science

000221476600004
Citation: Anisovich V V "Systematics of quark-antiquark states and scalar exotic mesons" Phys. Usp. 47 45–67 (2004)

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Оригинал: Анисович В В «Систематизация кварк-антикварковых состояний и экзотические мезоны» УФН 174 49–72 (2004); DOI: 10.3367/UFNr.0174.200401d.0049

References (98) Cited by (65) Similar articles (20) ↓

V.V. Anisovich “Exotic mesons: the search for glueballs” 38 1179–1201 (1995)
N.N. Achasov, G.N. Shestakov “Light scalar mesons in photon—photon collisions” 54 799–828 (2011)
V.V. Anisovich “The lightest scalar glueball” 41 419–439 (1998)
V.V. Anisovich, A.A. Ansel’m “Theory of reactions with production of three particles near threshold” 9 117–141 (1966)
L.G. Landsberg “Exotic baryons” 37 1043–1077 (1994)
N.N. Achasov, G.N. Shestakov “Strong isospin symmetry breaking in light scalar meson production” 62 3–31 (2019)
I.Yu. Kobzarev, B.V. Martem’yanov, M.G. Shchepkin “Orbitally excited hadrons” 35 (4) 257–275 (1992)
V.V. Kiselev, A.K. Likhoded “Baryons with two heavy quarks” 45 455–506 (2002)
L.G. Landsberg “Exotic mesons” 33 (3) 169–203 (1990)
V.G. Makhan’kov, Yu.P. Rybakov, V.I. Sanyuk “The Skyrme model and strong interactions (On the 30th anniversary of the creation of the Skyrme model)” 35 (2) 55–84 (1992)
D.V. Shirkov “Properties of regge pole trajectories” 13 599–607 (1971)
A.T. Filippov “The spectroscopy of light mesons” 25 371–391 (1982)
M.A. Andreichikov, B.O. Kerbikov, Yu.A. Simonov “Hadron physics in magnetic fields” 62 319–339 (2019)
I.S. Shapiro “The interaction of slow antinucleons with nucleons and nuclei” 16 173–184 (1973)
L.N. Lipatov “Integrability properties of high energy dynamics in the multi-color QCD” 47 325–339 (2004)
G.V. Pakhlova, P.N. Pakhlov, S.I. Eidel’man “Exotic charmonium” 53 219–241 (2010)
L.G. Landsberg “Electromagnetic leptonic decays and structure of light mesons” 28 435–466 (1985)
V.S. Popov “Tunnel and multiphoton ionization of atoms and ions in a strong laser field (Keldysh theory)” 47 855–885 (2004)
M.K. Volkov, A.B. Arbuzov “Meson production processes in electron—positron collisions and tau lepton decays within the extended Nambu—Jona-Lasinio model” 60 643–666 (2017)
V.V. Vereshchagin, K.N. Mukhin, O.O. Patarakin “New data on the pion-pion interaction at low energies” 43 315–347 (2000)

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