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pion    音标拼音: [p'ɑɪ,ɑn]
n. ｋ介子

ｋ介子

pion
n 1: a meson involved in holding the nucleus together; produced
as the result of high-energy particle collision [synonym:
{pion}, {pi-meson}]

Meson \Mes"on\, n. [NL., fr. Gr. me`son middle, neut. of me`sos,
a., middle.]
1. (Anat.) The mesial plane dividing the body of an animal
into similar right and left halves. The line in which it
meets the dorsal surface has been called the dorsimeson,
and the corresponding ventral edge the ventrimeson. --B.
G. Wilder.
[1913 Webster]

2. (Physics) An elementary particle made up of two quarks; a
hadron having a baryon number of zero; any hadron other
than a baryon. Mesons are bosons with integral values of
spin, having a mass intermediate between those of the
electron and a nucleon; they may have positive or negative
charges, or may be neutral. Mesons are of three types: the
{pion} ([pi]-meson), {kaon} (K-mesons), and
{[eta]-mesons}.
[PJC]

{mu meson} (Physics) the former name for the {muon}, a
particle which is not a true meson[2]. The term is no
longer used in technical literature, except historically.
[PJC]


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  • Pion - Wikipedia
    The pion is one of the particles that mediate the residual strong interaction between a pair of nucleons This interaction is attractive: it pulls the nucleons together
  • Pion - Leader in Next-Gen Pharma Development
    We’ll Save You the Work You handle saving lives Pion solutions help reduce risk and uncertainty in drug formulation About Us
  • The Charged Pions - The Pasayten Institute
    Occasionally a bunch of pions are created together, and you can see little pion atoms - pionium - where pi plus and pi minus orbit each other for a short time Curiously, the pionium atom typically decays not to π + or π +, but to a pair of π 0 ’s
  • Pion | Own your growth
    Pion helps you run and promote offer programs, verify customers and reach new audiences, whilst keeping full ownership of your data and experience
  • Pion - Scientific Lib
    In particle physics, pion (short for pi meson) is the collective name for three subatomic particles: π 0, π + and π − Pions are the lightest mesons (excluding the misnamed "Mu Meson" or muon) and play an important role in explaining low-energy properties of the strong nuclear force
  • Physics:Pion - HandWiki
    In particle physics, a pion ( ˈpaɪ ɒn , PIE-on) or pi meson, denoted with the Greek letter pi (π), is any of three subatomic particles: π0, π+, and π− Each pion consists of a quark and an antiquark and is therefore a meson Pions are the lightest mesons and, more generally, the lightest hadrons
  • Pion Interactions | Quantum Chromodynamics Essentials
    The pion, as a meson, plays a key role in understanding how quarks interact at low energies, offering insights into the confining nature of QCD Furthermore, the study of pion interactions provides valuable information about the symmetry properties in quantum chromodynamics
  • Particle Physics (4 of 41) The Pion: What Is It? - YouTube
    In this video I will explain the pion, what is an atom, and its history Next video in the Particle Physics series can be seen at: • Particle Physics (5 of 41) The 4 Fundament … more
  • Pion - Simple English Wikipedia, the free encyclopedia
    A pion, π meson, or pi meson is a type of meson, made of one up quark (u) and one down antiquark (d̅) Mesons are a category of subatomic particles, which are composed of one quark, and one antiquark
  • Precise Measurement of Pions Confirms Understanding of Fundamental . . .
    The lifetime of a neutrally charged pion is tied to breaking of chiral symmetry This means physicists can use theory to precisely calculate this lifetime Measurements of this lifetime have been much less precise than calculations from theory





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