Z -> b b-bar b b-bar in the light gluino and light sbottom scenario

Details Z -> b b-bar b b-bar in the light gluino and light sbottom scenario Z -> b b-bar b b-bar in the light gluino and light sbottom scenario

2003-01-10

arxiv.org/abs/hep-ph/0301070v3

Phys.Rev.D67:097703,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

minor tex error, citation corrected in version2, to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.67.097703

The light gluino (12 - 16 GeV) and light sbottom (2 - 6 GeV) scenario has been used to explain the apparent overproduction of b-quarks at the Tevatron. This scenario also predicts the decay Z -> b b-bar ~g ~g where the gluinos subsequently decay into b-quarks and sbottoms. We show that this can contribute to the width Gamma_4b = Gamma(Z -> b b-bar b b-bar) since most of the sbottoms and b-quarks arising from gluino decay have a small angular separation. We find that while no excess in Gamma_4b is observable due to large uncertainties in experimental measurements, the ratio Gamma(Z -> b b-bar ~g ~g)/Gamma(Z -> b b-bar b b-bar) can be large due to sensitivity to b-quark mass, the sbottom mixing angle and the gluino mass. We calculate it to be in the range 0.05 - 0.41 inclusive of the entire parameter space.

Affiliated with

Also associated with

No associations

Rating

Z -> b b-bar b b-bar in the light gluino and light sbottom scenario does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Z -> b b-bar b b-bar in the light gluino and light sbottom scenario, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Z -> b b-bar b b-bar in the light gluino and light sbottom scenario will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-231412