R. Barate et al., 4-JET FINAL-STATE PRODUCTION IN E(-) COLLISIONS AT CENTER-OF-MASS ENERGIES RANGING FROM 130 TO 184 GEV()E(), Physics letters. Section B, 420(1-2), 1998, pp. 196-204
The four jet topology is analysed in the ALEPH data taken between Nove
mber 1995 and October 1997, at centre-of-mass energies ranging from 13
0 to 184 GeV, While an unexpected accumulation of events with a dijet
mass sum around 105 GeV/c(2) had been observed during the first run in
1995 at 130/136 GeV, corresponding to an integrated luminosity of 5.7
pb(-1), no significant differences between data and standard model pr
ediction is seen, either in the high energy runs (81.1 pb(-1) taken at
centre-of-mass energies from 161 to 184 GeV) or in the 7.1 pb(-1) rec
orded during a new short fun at 130/136 GeV in 1997, We have found no
other explanation for the earlier reported ''four jet anomaly'' than a
statistical fluctuation. (C) 1998 Published by Elsevier Science B.V.