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 language | English |
|---|---|
| Pages (from-to) | 369-374 |
| Number of pages | 6 |
| Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 219 |
| Issue number | 2-3 |
| DOIs | |
| Publication status | Published - Mar 16 1989 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Nuclear and High Energy Physics
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Limits on Lepton-quark contact interactions from the quark forward-backward asymmetry in e+e- annihilation. / Hagiwara, K.; Sakuda, Makoto; Terunuma, N.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 219, No. 2-3, 16.03.1989, p. 369-374.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Limits on Lepton-quark contact interactions from the quark forward-backward asymmetry in e+e- annihilation
AU - Hagiwara, K.
AU - Sakuda, Makoto
AU - Terunuma, N.
PY - 1989/3/16
Y1 - 1989/3/16
N2 - 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.
AB - 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.
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UR - http://www.scopus.com/inward/citedby.url?scp=45149146372&partnerID=8YFLogxK
U2 - 10.1016/0370-2693(89)90406-1
DO - 10.1016/0370-2693(89)90406-1
M3 - Article
AN - SCOPUS:45149146372
VL - 219
SP - 369
EP - 374
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 2-3
ER -