Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Four jet final state production in e+ e- collisions at center-of-mass energies ranging from 130-GeV to 184-GeV
AU - ALEPH Collaboration, The
AU - Barate, R.
AU - Betteridge, Andrew
AU - Bowdery, Christopher
AU - Colrain, Paul
AU - Finch, Alexander
AU - Foster, Frank
AU - Hughes, Gareth
AU - Jones, Roger
AU - Whelan, Edmund
AU - Williams, Mark
PY - 1998/2/19
Y1 - 1998/2/19
N2 - The four jet topology is analysed in the ALEPH data taken between November 1995 and October 1997, at centre-of-mass energies ranging from 130 to 184 GeV. While an unexpected accumulation of events with a dijet mass sum around 105 GeV/c2 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 prediction 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 recorded during a new short run at 130/136 GeV in 1997. We have found no other explanation for the earlier reported “four jet anomaly” than a statistical fluctuation.
AB - The four jet topology is analysed in the ALEPH data taken between November 1995 and October 1997, at centre-of-mass energies ranging from 130 to 184 GeV. While an unexpected accumulation of events with a dijet mass sum around 105 GeV/c2 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 prediction 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 recorded during a new short run at 130/136 GeV in 1997. We have found no other explanation for the earlier reported “four jet anomaly” than a statistical fluctuation.
U2 - 10.1016/S0370-2693(97)01596-7
DO - 10.1016/S0370-2693(97)01596-7
M3 - Journal article
VL - 420
SP - 196
EP - 204
JO - Physics Letters B
JF - Physics Letters B
SN - 0370-2693
IS - 1-2
ER -