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Episode 1492             Episode 1494
Episode 1493

Oblique correction
Sat, 2021-Jun-05 00:51 UTC
Length - 2:23

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Welcome to random Wiki of the Day where we read the summary of a random Wikipedia page every day.

The random article for Saturday, 5 June 2021 is Oblique correction.

In particle physics, an oblique correction refers to a particular type of radiative correction to the electroweak sector of the Standard Model. Oblique corrections are defined in four-fermion scattering processes, (e+ + e− → q + q ) at the CERN Large Electron–Positron Collider. There are three classes of radiative corrections to these processes: vacuum polarization corrections, vertex corrections, and box corrections. The vacuum polarization corrections are referred to as oblique corrections, since they only affect the mixing and propagation of the gauge bosons and they do not depend on which type of fermions appear in the initial or final states. (The vertex and box corrections, which depend on the identity of the initial and final state fermions, are called nonoblique corrections.)

Any new particles charged under the electroweak gauge groups can contribute to oblique corrections. Therefore, the oblique corrections can be used to constrain possible new physics beyond the Standard Model. To affect the nonoblique corrections, on the other hand, the new particles must couple directly to the external fermions.

The oblique corrections are usually parameterized in terms of the Peskin–Takeuchi parameters S, T, and U.

This recording reflects the Wikipedia text as of 00:51 UTC on Saturday, 5 June 2021.

For the full current version of the article, see Oblique correction on Wikipedia.

This podcast is produced by Abulsme Productions based on Wikipedia content and is released under a Creative Commons Attribution-ShareAlike License.

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