DeCS

Descriptor English:	Mesons
Descriptor Spanish:	Mesones
Descriptor Portuguese:	Mésons
Descriptor French:	Mésons
Entry term(s):	Meson Muon Muons Pion Pions mu Mesons mu-Meson mu-Mesons pi Mesons pi-Meson pi-Mesons
Tree number(s):	G01.249.600
RDF Unique Identifier:	https://id.nlm.nih.gov/mesh/D008651
Scope note:	Short-lived elementary particles found in cosmic radiation or produced from nuclear disintegration. Their mass is between that of protons and electrons and they can be negative, positive, or neutral. pi-Mesons (pions) are heavier than mu-mesons (muons) and are proposed for cancer radiotherapy because their capture and disintegration by matter produces powerful, but short-lived, secondary radiation.
Annotation:	elementary particles; IM
Allowable Qualifiers:	AE adverse effects CL classification HI history TU therapeutic use
Previous Indexing:	Elementary Particles (1975-1984) Nuclear Physics (1966-1974)
Public MeSH Note:	91; was see under ELEMENTARY PARTICLES 1985-90, was see ELEMENTARY PARTICLES 1975-84; MUONS was see ELEMENTARY PARTICLES 1975-84
Online Note:	use ELEMENTARY PARTICLES to search MESONS & MUONS 1975-84
History Note:	91(85); was see under ELEMENTARY PARTICLES 1985-90, was see ELEMENTARY PARTICLES 1975-84; MUONS was see ELEMENTARY PARTICLES 1975-84
DeCS ID:	8827
Unique ID:	D008651
Documents indexed in the Virtual Health Library (VHL):	Click here to access the VHL documents
Date Established:	1991/01/01
Date of Entry:	1984/02/24
Revision Date:	2008/07/08

PHENOMENA AND PROCESSES

Physical Phenomena [G01]

Mesons - Preferred

Concept UI	M0013479
Scope note	Short-lived elementary particles found in cosmic radiation or produced from nuclear disintegration. Their mass is between that of protons and electrons and they can be negative, positive, or neutral. pi-Mesons (pions) are heavier than mu-mesons (muons) and are proposed for cancer radiotherapy because their capture and disintegration by matter produces powerful, but short-lived, secondary radiation.
Preferred term	Mesons
Entry term(s)	Meson

mu-Mesons - Narrower

pi-Mesons - Narrower

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