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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
  • Resource Library - Pion
    Access webinars, publications, whitepapers, application notes, and scientific posters for informed research and decisions in next-gen pharma
  • Industries - Pion
    Optimize pharma R D, food formulations, and cannabis production Our solutions streamline research, satisfy consumers, and ensure quality amid competition
  • Meet Pion | Pion - We are Pion
    At Pion, we help brands harness the growth-driving power of consumer groups with full-funnel insights, advertising and verification Our ecosystem of solutions helps expand your brand’s customer base and supercharge sales
  • 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
  • About Us - We are Pion
    Pion serves drug food researchers, formulators, and manufacturers globally where data quality, accuracy and reproducibility are valued components of a product development process
  • PION Definition Meaning - Merriam-Webster
    The meaning of PION is a meson that is a combination of up and down quarks and antiquarks, that may be positive, negative, or neutral, and that has a mass about 270 times that of the electron
  • 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 - 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





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