Limits on Lepton-quark contact interactions from the quark forward-backward asymmetry in e+e- annihilation

K. Hagiwara, M. Sakuda, N. Terunuma

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Lepton-quark contact interactions expected in composite theories can be tested using the forward-backward (F-B) asymmetry of charm or bottom hadrons in e+e- annihilation. Existing data on the F-B asymmetry of D* and D mesons can already set lower limits typically exceeding 1 TeV (95% CL) on the compositeness scale. These limits are better than those for pure quark contact interactions set by the CERN pp̄ collider experiments, and are comparable to purely leptonic ones obtained in e+e- annihilation experiments. The implication of bottom quark asymmetry in the presence of B0-B0 mixing is also briefly discussed.

Original languageEnglish
Pages (from-to)369-374
Number of pages6
JournalPhysics Letters B
Volume219
Issue number2-3
DOIs
Publication statusPublished - Mar 16 1989

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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