- upsilon particle
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Any of a number of bound states of a heavy quark and its antiquark, especially that formed from a bottom quark and an anti-bottom quark.
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upsilon particle
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Upsilon particle — Infobox Particle bgcolour = name = Upsilon (SubatomicParticle|Upsilon) caption = A plot of the invariant mass of muon pairs, from the Upsilon particle discovery paper. The peak at about 9.5 GeV represents the particle itself. num types =… … Wikipedia
Upsilon — (uppercase Upsilon;, lowercase upsilon;; el. Ύψιλον) is the 20th letter of the Greek alphabet. In the system of Greek numerals it has a value of 400. It is derived from the Phoenician waw. In early Greek it was pronounced like English oo, IPA2|u … Wikipedia
Upsilon (disambiguation) — Upsilon or Ypsilon is a Greek letter.May refer to:*Lancia Ypsilon *Ypsilon (Scheme implementation) *Upsilon Acrux *Upsilon Andromedae, a solar system *Upsilon Aquarii *Upsilon Aquilae *Upsilon Aurigae *Upsilon Boötis *Upsilon Cancri *Upsilon… … Wikipedia
upsilon — /yoohp seuh lon , leuhn, up /; esp. Brit. /yoohp suy leuhn/, n. 1. the 20th letter of the Greek alphabet (Y). 2. the vowel sound represented by this letter. 3. Also called upsilon particle, Physics. any of a family of heavy, short lived, neutral… … Universalium
upsilon meson — noun The upsilon particle … Wiktionary
Méson upsilon — Upsilon, Υ Propriétés générales Classification Méson Composition Paire quark antiquark bb̄ Propriétés physiques Masse 9,460 4 GeV.c 2 Charge électrique 0 e … Wikipédia en Français
Meson upsilon — Méson upsilon Upsilon, Υ Propriétés générales Classification Méson Composition Paire quark antiquark bb̄ Propriétés physiques Masse 9,460 4 GeV.c 2 Charge électrique 0 … Wikipédia en Français
Méson Upsilon — Upsilon, Υ Propriétés générales Classification Méson Composition Paire quark antiquark bb̄ Propriétés physiques Masse 9,460 4 GeV.c 2 Charge électrique 0 … Wikipédia en Français
Timeline of particle discoveries — This is a timeline of subatomic particle discoveries, including all particles thus far discovered which appear to be elementary (that is, indivisible) given the best available evidence. It also includes the discovery of composite particles and… … Wikipedia
Timeline of particle physics — The timeline of particle physics lists the sequence of particle physics theories and discoveries in chronological order. The most modern developments follow the scientific development of the discipline of Particle physics.19th century* 1858… … Wikipedia
