Sunday, April 30, 2006

B_s oscillation

A few days ago I reported the experimental measurements of CDF at Fermilab. Now I explain the meaning of these results.

The article in the electronic repository at Los Alamos National Laboratory:


http://lanl.arxiv.org/abs/hep-ph/0604112


gives more information.

The catchy line of the result was that the particle of matter turn into anti-matter many times per second. It takes this particle 0.0577 pico seconds to change. One picosecond is:

0.000 000 000 001 second.

This must be one of the smallest times ever measured by man.

This process is so fast that we have a window to new physics. The article above informs us that no new physics is necessary, the so-called Standard Model predicts this very small time interval, and the prediction was confirmed by CDF, and previously by D_0 at Fermilab.

Unfortunately New Physics cannot be completely rejected either. Even if we know more now, we are still in limbo. The Standard Model will be tested at CERN starting in 2007.

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