Experimental Particle Physics - CLEO/BELLE

 

CLEO/BELLE Experimental Particle Physics Group 

Professors Giovanni Bonvicini and David Cinabro

One of the great mysteries in physics is why the fundamental particles come in three and only three families. Studying the properties of the three families in detail is one way to further understand this mystery which is central to understanding the universe at a fundamental level.

The Wayne State CLEO/BELLE group is focused on investigating the properties of the quarks of the second and third families. CLEO is an
experiment at Cornell that currently produces very large samples of the second family charm quark pairs in electron-positron collisions. This is a pristine environment and CLEO is a very capable detector able to see both charged and neutral particles. These allow unmatched sensitivity to rare behavior and unparalleled accuracy in measurements of the charm quark. We are focused on studying charm decays to three bodies and the search for charm quarks spontaneously turning into anti-charm quarks.

We are also members of the Belle and Belle II Collaboration at KEK, Tsukuba, Japan. Belle took data for a decade at KEKB, the highest luminosity machine in the world, resulting in close to 900 Millions B meson pairs produced. Here, too, the combination of statistics and cleanliness has produced hundreds of interesting physics papers, and the contribution of Belle was mentioned in the 2008 Nobel Prize award. Belle II will take 50 times more data at the new accelerator SuperKEKB, which will be inaugurated in November 2011.

We also work on the physics of particle accelerators. When the intense beams of particles collide the electric field of one beam causes the particles of the other beam to radiate. This radiation can be measured to learn if the beams are colliding head on or not. Properties of the radiation also indicate exactly how the beams are missing each other and allow them to quickly be brought back into proper alignment. A prototype was tested in the electron-positron ring at Cornell. We are developing the detector for use at SuperKEKB , leading a collaboration with five other institutions (Hawaii, Pacific National Lab., Luther, KEK and Tabuk).

The group's research is supported by the National Science Foundation, the Department of Energy, the Japanese program Hosei Yosan, and the Japan-USA program Nichibei.

For more information on the CLEO Experiment, visit http://w4.lns.cornell.edu/public/CLEO/.
For more information on the BELLE Experiment, visit http://belle.kek.jp.
For a list of publications by members of this group, click here.