Quarkonia
| Autor: | Krammer, M., Krasemann, H. |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 1979 |
| Předmět: |
QUARK: CHARMONIUM
TRANSITION: MAGNETIC SCALING: RADIATIVE DECAY PSI MESONS: ENERGY LEVELS TRANSITION: ELECTRIC BIBLIOGRAPHY LECTURES QUARK: CHARGE bottom HYPERFINE STRUCTURE: CHARMONIUM QUARK ANTIQUARK: BOUND STATE DUALITY NEW PARTICLE: CHI(3450) QUANTUM MECHANICS: SCHROEDINGER EQUATION SCALING: SCHROEDINGER EQUATION QUANTUM CHROMODYNAMICS RADIATIVE DECAY: PSI MESONS ANNIHILATION: ELECTRON POSITRON RADIATIVE DECAY: SCALING QUARK: QUARKONIUM PSI MESONS: RADIATIVE DECAY NEW PARTICLE: CHI(3590) JET FINE STRUCTURE: CHARMONIUM X(2830) ELECTRON POSITRON: ANNIHILATION |
| DOI: | 10.3204/pubdb-2017-12740 |
| Popis: | 65 pp. (1979). doi:10.1007/978-3-7091-8574-2_4 When the J/ψ and ψ’ were discovered in fall 1974 [1] we all witnessed a dramatic and beautiful revival of the quark model [2]. The predicted new quark flavour, c = charm [3] could be added to the hadron spectroscopy by the interpretation of the new particles as c c¯ bound states. It was argued that the new system is nonrelativistic: Charmonium [4]. Whereas the old mesons suffered from the fact that the quarks are extremely relativistic (mass differences are of the order of the masses themselves), in Charmonium the heavy (≈ 1.5 GeV) c-quarks should move relatively slowly, β2 = (v/c)2 ≈ 0.2. The well known powerful methods of exploring a nonrelativistic system could be used. This was the source of real excitement about the new particles. |
| Databáze: | OpenAIRE |
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