The puzzle of the bottom quark production cross-section

The production rate of bottom quarks at hadron colliders exceeds the expectations of next-to-leading order perturbative quantum chromodynamics. An additional contribution from pair-production of light gluinos, of mass 12 to 16 GeV, with two-body decays into bottom quarks and light bottom squarks, yields a differential cross section for bottom quarks in better agreement with data. The masses of the gluino and bottom squark are restricted further by the ratio of like-sign to opposite-sign leptons at hadron colliders. Restrictions on this scenario from other data are summarized, and predictions are made for other processes such as Upsilon decay into a pair of bottom squarks.

Note:

10 pages, latex, 1 figure, uses ws-ijmpa.cls, enclosed. To be published in International Journal of Modern Physics A. Proceedings of the Third Circum-Pan-Pacific Symposium on High Energy Spin Physics, Peking University, Beijing, October 8 - 13, 2001

talk: Beijing 2001/10/08
anti-p p: inclusive reaction
p p: inclusive reaction
bottom: hadroproduction
quantum chromodynamics: perturbation theory
supersymmetry
gluino: pair production
gluino: mass
gluino: hadronic decay
final state: two-particle

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