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EnglishThe 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/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 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 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.
http://hdl.handle.net/11384/4229| Titolo: | Four-jet final state production in e(+)e(-) collisions at centre-of-mass energies ranging from 130 to 184 GeV RID C-6238-2011 RID F-5127-2011 RID G-1279-2010 RID H-5578-2011 |
| Autori interni: | LUSIANI, Alberto ROLANDI, LUIGI LIGABUE, FRANCO |
| Data di pubblicazione: | 1998 |
| Rivista: | PHYSICS LETTERS. SECTION B |
| Abstract: | 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/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 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 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. |
| Handle: | http://hdl.handle.net/11384/4229 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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