mu-mesonn.

Brit.

/ˌmjuːˈmiːzɒn/,

/ˌmjuːˈmiːsɒn/,

/ˌmjuːˈmɛzɒn/,

/ˌmjuːˈmɛsɒn/,

/ˌmjuːˈmeɪzɒn/, U.S.

/ˈmjuˈmeɪˌzɑn/,

/ˈmjuˈmeɪˌsɑn/

Forms: 1900s– mu-meson, 1900s– μ-meson.

Origin: A borrowing from Greek, combined with an English element. Etymons: Greek μ , meson n.³

Etymology: < the name of the Greek letter μ (see mu n.¹) + meson n.³ Compare slightly later muon n. Compare pi-meson n.

Particle Physics. Now chiefly historical.

= muon n.See the note at muon n. and cf. quot. 1990.

ΘΚΠ

the world > matter > physics > atomic physics > particle physics > particle avoiding strong interaction > muon > [noun]

mu-meson1947

muon1951

1947 C. M. G. Lattes et al. in Nature 4 Oct. 455/1 There is, therefore, good evidence for the production of a single homogeneous group of secondary mesons... It is convenient to refer to this process..as the μ-decay. We represent the primary mesons by the symbol π, and the secondary by μ.]

1947 C. M. G. Lattes et al. in Nature 4 Oct. 455/2 (heading) Evidence of a difference in mass of π- and μ-mesons.

1951 W. L. Gardner (title of Ph.D. thesis, Univ. of Calif.) The energy spectrum of the positrons from mu-meson decay.

1969 Times 2 Jan. 16/2 The measurements may indicate a means of distinguishing between mu mesons and electrons on grounds other than the difference of mass between the two particles.

1974 Jrnl. Geophysical Res. 79 3696/1 The three underground telescopes are large multidirectional mu-meson telescopes using plastic scintillators.

1990 R. Morris Edges of Sci. i. i. 8 This particle resembled the electron, and possessed the same negative charge, but was 207 times as heavy. Originally, the new particle was called the mu meson (later reclassified and renamed muon).

This entry has been updated (OED Third Edition, March 2003; most recently modified version published online March 2022).

单词	mu-meson
释义	mu-mesonn. Brit. /ˌmjuːˈmiːzɒn/, /ˌmjuːˈmiːsɒn/, /ˌmjuːˈmɛzɒn/, /ˌmjuːˈmɛsɒn/, /ˌmjuːˈmeɪzɒn/, U.S. /ˈmjuˈmeɪˌzɑn/, /ˈmjuˈmeɪˌsɑn/ Forms: 1900s– mu-meson, 1900s– μ-meson. Origin: A borrowing from Greek, combined with an English element. Etymons: Greek μ , meson n.³ Etymology: < the name of the Greek letter μ (see mu n.¹) + meson n.³ Compare slightly later muon n. Compare pi-meson n. Particle Physics. Now chiefly historical. = muon n.See the note at muon n. and cf. quot. 1990. ΘΚΠ the world > matter > physics > atomic physics > particle physics > particle avoiding strong interaction > muon > [noun] mu-meson1947 muon1951 1947 C. M. G. Lattes et al. in Nature 4 Oct. 455/1 There is, therefore, good evidence for the production of a single homogeneous group of secondary mesons... It is convenient to refer to this process..as the μ-decay. We represent the primary mesons by the symbol π, and the secondary by μ.] 1947 C. M. G. Lattes et al. in Nature 4 Oct. 455/2 (heading) Evidence of a difference in mass of π- and μ-mesons. 1951 W. L. Gardner (title of Ph.D. thesis, Univ. of Calif.) The energy spectrum of the positrons from mu-meson decay. 1969 Times 2 Jan. 16/2 The measurements may indicate a means of distinguishing between mu mesons and electrons on grounds other than the difference of mass between the two particles. 1974 Jrnl. Geophysical Res. 79 3696/1 The three underground telescopes are large multidirectional mu-meson telescopes using plastic scintillators. 1990 R. Morris Edges of Sci. i. i. 8 This particle resembled the electron, and possessed the same negative charge, but was 207 times as heavy. Originally, the new particle was called the mu meson (later reclassified and renamed muon). This entry has been updated (OED Third Edition, March 2003; most recently modified version published online March 2022). < n.1947
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