Title of article
A study of four-fermion final states with high multiplicity at LEP
Author/Authors
A search for ?+??qq (? = e، نويسنده , , ?) four-fermion final states in high multiplicity events has been performed at s?mZ and above the Z peak at s=130 GeV and s=136 GeV. The data taken with OPAL correspond to an integrated luminosity of 132.4 pb?1 and 5.3 pb?1 at s?mZ and s=130?136 GeV، نويسنده , , respectively. While at the Z resonance the data are in good agreement with the Standard Model predictions، نويسنده , , we find more events than expected at s=130?136 GeV، نويسنده , , especially in the ?+??qq channel، نويسنده , , where 5 events remain after all cuts، نويسنده , , with only 0.6 predicted by the Monte Carlo simulation. For all center-of-mass energies the observed shapes of the differential distributions are consistent with the predictions.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 1996
Pages
14
From page
315
To page
328
Abstract
OPAL Collaboration, G. Alexander, J. Allison, N. Altekamp, K. Ametewee, K.J. Anderson, S. Anderson, S. Arcelli, S. Asai, D. Axen, G. Azuelos, A.H. Ball, E. Barberio, R.J. Barlow, R. Bartoldus, J.R. Batley, G. Beaudoin, J. Bechtluft, C. Beeston, T. Behnke, et al.
Journal title
PHYSICS LETTERS B
Serial Year
1996
Journal title
PHYSICS LETTERS B
Record number
906586
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