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HADRON [4 records]

Record 1 2023-10-17

English

Subject field(s)
  • Atomic Physics
  • Informatics
DEF

[A] computer program designed to simulate the final states of high-energy collisions in full detail down to the level of individual stable particles.

CONT

The basic idea leading to parton shower Monte Carlo event generators is to use Eq.... to convert the inclusive prediction for the occurrence of parton a in the beam hadron h into an exclusive prediction for parton a and a certain number of additional particles, which are resolved at smaller and smaller momentum transfer.

French

Domaine(s)
  • Physique atomique
  • Informatique

Spanish

Save record 1

Record 2 2016-03-07

English

Subject field(s)
  • Atomic Physics
CONT

The new particle has a mass of about 3. 1 billion electron volts(3. 1 GeV). That is more than three times the mass of the proton, making the psi one of the heaviest particles known... The psi has a spin angular momentum of 1, the integer unit indicating the particle must be a meson. It is electrically neutral, and it has zero strangeness.... The psi particle also decays through the strong interaction, but it has a lifetime of about [ten to the minus twentieth of a] second, 1, 000 times longer than the lifetime of a typical hadron of comparable mass.

OBS

The new particle was discovered independently and at about the same time by two groups of experimenters ... One group, whose members were from the Massachusetts Institute of Technology and the Brookhaven National Laboratory ... gave it the name J. The other group ... made up of physicists from the Stanford Linear Accelerator Center (SLAC) and the Lawrence Berkeley Laboratory ...[designated] the particle by the Greek letter psi ...

OBS

The word "psi" must be replaced by the corresponding Greek letter or italicized.

French

Domaine(s)
  • Physique atomique
CONT

La durée de vie de la particule [psi] (3105) est grande par rapport aux désintégrations fortes usuelles; or, étant donné sa masse élevée, le nombre d'états finals énergétiquement possibles (plusieurs mésons [pi] par exemple) est grand [...]

OBS

Il se trouve parfois que le terme «psi» tout seul est employé pour désigner cette particule; il s'emploie plus souvent pour désigner la «famille» de particules à laquelle elle appartient.

OBS

Le mot «psi» doit être remplacé par la lettre grecque correspondante ou être écrit en italique.

Spanish

Save record 2

Record 3 2013-01-25

English

Subject field(s)
  • Various Proper Names
  • Scientific Instruments
  • Atomic Physics
  • Nuclear Physics
DEF

A particle accelerator used by physicists to study the smallest known particles – the fundamental building blocks of all things.

OBS

The Large Hadron Collider(LHC) is a gigantic scientific instrument near Geneva, where it spans the border between Switzerland and France about 100 m underground.

French

Domaine(s)
  • Appellations diverses
  • Instruments scientifiques
  • Physique atomique
  • Physique nucléaire
DEF

Accélérateur de particules, avec lequel les physiciens étudient les plus petites particules connues : les composants fondamentaux de la matière.

Spanish

Campo(s) temático(s)
  • Denominaciones varias
  • Instrumentos científicos
  • Física atómica
  • Física nuclear
DEF

Acelerador y colisionador de partículas [diseñado] para colisionar haces de hadrones, más exactamente de protones de 7 TeV [teraelectronvoltio] de energía, siendo su propósito principal examinar la validez y límites del Modelo Estándar, el cual es actualmente el marco teórico de la física de partículas, del que se conoce su ruptura a niveles de energía altos.

CONT

El gran colisionador de hadrones (en inglés large hadron collider o LHC, siglas por las que es generalmente conocido) es un acelerador de partículas (o acelerador y colisionador de partículas) ubicado en la actualmente denominada Organización Europea para la Investigación Nuclear [...] cerca de Ginebra, en la frontera franco-suiza.

Save record 3

Record 4 1979-09-25

English

Subject field(s)
  • Physics
CONT

We give the general form of the angular distribution of lepton pairs produced in hadron collisions, where each dilepton is assumed to come from the decay of a virtual photon.

French

Domaine(s)
  • Physique
DEF

Système composé de deux leptons.

CONT

Cette floraison de dileptons n'était pas, malgré tout, une preuve concluante de la désintégration d'une particule charmée de masse 2 GEV environ.

Spanish

Save record 4

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