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BaBar Data Analysis Hint Standard Model Flaw


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The Standard Model (SM) provides a means for physicists to describe the universe at a subatomic level. The idea is that the protons and neutrons are composed of three smaller parts called quarks. There are six types of quarks which combine to form the larger protons and neutrons. For example, a proton is actually three quarks: two up quarks and one down quark. The up quarks have a charge of +2/3 while the down quark has a charge of -1/3. Combined, the three quarks lead to the +1 charge of the proton.

Seems simple enough.

BaBar data collected between 1999 to 2008 are still being analyzed. A recent paper submission suggests there is an greater amount of particle decay [called “B to D-star-tau-nu”] than predicted by the Standard Model. As others replicate and review the publication, physicists may adjust the Standard Model to better explain the data.

Sources: Original paper; Stanford press release