Angel "Java" Lopez en Blog

23 de Enero, 2012

Publicado el 23 de Enero, 2012, 9:42

Otro tema fascinante: larga historia, exitoso desarrollo, confirmaciones experimentales a predicciones teóricas, y con temas pendientes (p.ej. hay bosón de Higgs?). Tanto para estudiar y discutir. Por ahora, mis primeros enlaces:

The Standard Model of particle physics is a theory concerning the electromagnetic, weak, and strong nuclear interactions, which mediate the dynamics of the known subatomic particles. Developed throughout the mid to late 20th century, the current formulation was finalized in the mid 1970s upon experimental confirmation of the existence of quarks. Since then, discoveries of the bottom quark (1977), the top quark (1995) and the tau neutrino (2000) have given further credence to the Standard Model. Because of its success in explaining a wide variety of experimental results, the Standard Model is sometimes regarded as a theory of almost everything.

Still, the Standard Model falls short of being a complete theory of fundamental interactions because it does not incorporate the physics of dark energy nor of the full theory of gravitation as described by general relativity. The theory does not contain any viable dark matter particle that possesses all of the required properties deduced from observational cosmology. It also does not correctly account for neutrino oscillations (and their non-zero masses). Although the Standard Model is believed to be theoretically self-consistent, it has several apparently unnatural properties giving rise to puzzles like the strong CP problem and the hierarchy problem.

Nevertheless, the Standard Model is important to theoretical and experimental particle physicists alike. For theorists, the Standard Model is a paradigmatic example of a quantum field theory, which exhibits a wide range of physics includingspontaneous symmetry breaking, anomalies, non-perturbative behavior, etc. It is used as a basis for building more exotic modelswhich incorporate hypothetical particles, extra dimensions and elaborate symmetries (such as supersymmetry) in an attempt to explain experimental results at variance with the Standard Model, such as the existence of dark matter and neutrino oscillations. In turn, experimenters have incorporated the standard model into simulators to help search for new physics beyond the Standard Model.

Recently, the standard model has found applications in fields besides particle physics, such as astrophysics, cosmology, andnuclear physics.

LHC results put supersymmetry theory 'on the spot'

Prequark Chromodynamics

Higgs boson, a bad idea, part four
Related to Prequark, discussing Cabiddo and Weinberg angle calculation

LHCb experiment sees Standard Model physics


With friends like these, who needs anomalies?

The Standard Model Explains Force And Matter‬‏

Fermilab experiment discovers a heavy relative of the neutron

Fermilab experiment discovers a heavy relative of the neutron

Anomalies at Fermilab

Quantum Contributions to Cosmological Correlations

A new bottomonium particle makes its debut

MEG experiment may give boost to supersymmetry

US atom smasher may have found new force of nature (Update 2)

LHC Locking In on New Elementary Particle

Rare particle decays could indicate presence of new physics

Physicists first to observe Big Bang particles produced at the Large Hadron Collider at CERN

Interesting effect at the Tevatron hints at new physics

Particle Chart

Anticipating the first steps beyond the Standard Model

Marketing CP Violation

Anticipating the first steps beyond the Standard Model

¿Por qué se utiliza la teoría de grupos en física de partículas elementales?

Nicola Cabibbo: 1935–2010 -

Facts and mysteries in elementary particle physics

Mis enlaces:

Ya vendrán más enlaces sobre el tema, y sobre el bosón de Higgs. Ver también: El modelo estandar, materia y fuerza.

Angel "Fermion" Lopez :-)

Por ajlopez, en: Ciencia