Bounds on QCD instantons from HERA
Abstract
Signals for processes induced by QCD instantons are searched for in HERA data on the hadronic final state in deep-inelastic scattering. The maximally allowed fraction of instanton-induced events is found at 95% confidence level to be on the percent level in the kinematic domain 10 -4 ≲ x ≲ 10 -2 and 5 ≲ Q2 ≲ 100 GeV 2. The most stringent limits are obtained from the multiplicity distributions.
- Publication:
-
Nuclear Physics B
- Pub Date:
- February 1998
- DOI:
- 10.1016/S0550-3213(97)00741-4
- arXiv:
- arXiv:hep-ex/9708008
- Bibcode:
- 1998NuPhB.511...85C
- Keywords:
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- High Energy Physics - Experiment
- E-Print:
- 14 pages, latex, 9 figures as ps/eps