Definitions for j particle

This page provides all possible meanings and translations of the word j particle

Princeton's WordNet

  1. J particle, psi particle(noun)

    a neutral meson with a large mass

Freebase

  1. J/psi meson

    The J/ψ meson or psion is a subatomic particle, a flavor-neutral meson consisting of a charm quark and a charm antiquark. Mesons formed by a bound state of a charm quark and a charm anti-quark are generally known as "charmonium". The J/ψ is the first excited state of charmonium. The J/ψ has a rest mass of 3.0969 GeV/c², and a mean lifetime of 7.2×10^− s. This lifetime was about a thousand times longer than expected. Its discovery was made independently by two research groups, one at the Stanford Linear Accelerator Center, headed by Burton Richter, and one at the Brookhaven National Laboratory, headed by Samuel Ting of MIT. They discovered they had actually found the same particle, and both announced their discoveries on 11 November 1974. The importance of this discovery is highlighted by the fact that the subsequent, rapid changes in high-energy physics at the time have become collectively known as the "November Revolution". Richter and Ting were rewarded for their shared discovery with the 1976 Nobel Prize in Physics.

Sample Sentences & Example Usage

  1. Vanna Bonta:

    Which came first — the observer or the particle?

  2. Vanna Bonta:

    How do we define consciousness, or what has been called the human soul or the spirit, if it can't be quantified as matter or a particle?... it can be quantified or observed just by a process of elimination.

  3. Vanna Bonta:

    How do we define consciousness, or what has been called the human soul or the spirit, if it can't be quantified as matter or a particle? ... it can be quantified or observed just by a process of elimination.

  4. Henry James:

    Experience is never limited, and it is never complete it is an immense sensibility, a kind of huge spider web of the finest silken threads suspended in the chamber of consciousness, and catching every airborne particle in its tissue.

  5. Jane Porter:

    Happiness is a sunbeam, Which may pass through a thousand bosoms Without losing a particle of its original ray Nay, when it strikes on a kindred heart, Like the converged light on a mirror, It reflects itself with redoubled brightness. It is not perfected till it is shared.

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