| 单词 | psi particle |
| 释义 | psi particle[ sahy, psahy ] / saɪ, psaɪ / noun Physics.any of a family of mesons consisting of a charmed quark and a charmed antiquark. an early name for the J/psi particle. Origin of psi particleFirst recorded in 1970–75 Words nearby psi particlepsilocin, psilocybin, psilomelane, psilosis, P-sinistrocardiale, psi particle, psi phenomenon, PSIS, psittacine, psittacinite, psittacism Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for psi particlepsi particle nounSee J/psi particle Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for psi particle (1 of 2)psi particle [ sī, psī ] See J/psi particle. Scientific definitions for psi particle (2 of 2)psi′ particle [ sī′prīm′, psī′- ] An electrically neutral meson having a mass 7,213 times that of the electron and a mean lifetime of approximately 1 X 10-20 seconds, composed, like the J/psi particle, of a charm-anticharm quark pair. See Table at subatomic particle. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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