spurionn.
/ˈspjʊərɪɒn/, /ˈspjɔːrɪɒn/, U.S. /ˈsp(j)ʊriˌɑn/, /ˈspjuriˌɑn/ Particle Physics.
A fictitious subatomic particle introduced to facilitate calculations.
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spurion1956
1956 Nucl. Physics 1 622 The classification of the weak interactions is not satisfactory as yet. An attempt was made to extend isobaric spin conservation also to these, by introduction of a ‘particle’ that would carry no energy or momentum, no angular momentum or charge, but only ½ unit of isobaric spin (the ‘spurion’).
1983 Nucl. Physics B. 222 280 We must deal with diagrams which involve spurions of more than one type.
2010 P. Langacker Standard Model & Beyond iii. 150 It is sometimes useful to introduce a spurion,..used as a bookkeeping device.
This entry has been updated (OED Third Edition, December 2013; most recently modified version published online March 2022).
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n.1956- under the subordination of
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