An Investigation of Screwiness in Hadronic Nal States from Delphi
نویسنده
چکیده
A recent theoretical model by Andersson et al. proposes that soft gluons order themselves in the form of a helix at the end of the QCD cascades. The Authors of the model present a measure of the rapidity-azimuthal angle correlation, which they call screwiness. We searched for such a signal in DELPHI data, and found no evidence for screwiness.
منابع مشابه
An investigation of screwiness in hadronic final states from DELPHI
A recent theoretical model by Andersson et al. proposes that soft gluons order themselves in the form of a helix at the end of the QCD cascades. The Authors of the model present a measure of the rapidity-azimuthal angle correlation, which they call screwiness. We searched for such a signal in DELPHI data, and found no evidence for screwiness. ∗On leave of absence from University of Helsinki, Fi...
متن کاملHep'97 #322 Search for Four-fermion Nal States in E + E ? Interactions at P S = 130gev ? 172gev Preliminary Delphi Collaboration
During LEP running in 1995 and 1996, DELPHI accumulated data at centre-of-mass energies ranging from 130 GeV to 172 GeV. Searches were performed for events containing four nal-state fermions in the l + l ? q q, q q and l + l ? l + l ? channels. The number of events detected was found to be consistent with Standard Model predictions.
متن کاملSearch for Four-fermion Nal States in E + E ? Interactions at P S = 130gev ? 136gev
In the data accumulated by DELPHI during November 1995 LEP run at 130 GeV { 140 GeV, events with four fermions in the nal state have been selected. Final states l + l ? q q, q q, l + l ? and l + l ? l + l ? have been analyzed. Three events were found in agreement with expectations from Standard Model four-fermion processes of 2.3 0.14 events and two-fermion background of 0.76 0.15 events.
متن کاملSearch for charged Higgs bosons and measurement of D < # 4 D in quark and lepton # avour identi " ed events at LEP
A search for pair produced charged Higgs bosons was performed on the high energy data collected by DELPHI at LEP2. All three major "nal states, smsm, cssm and cscs were searched for. The analyses used a combination of event shape variables, di-jet masses and jet #avour tagging. The jet #avours were identi"ed by using life time tagging and particle identi"cation based on the RICH detector comple...
متن کاملDeeply Inelastic Hadronic Final States : QCD
The status of the calculation of next-to-leading-order QCD corrections to hadronic nal states in deeply inelastic scattering is reviewed, and an overview of the phenomenology (including the measurement of the strong coupling constant and the gluon density via jet rates) is given. We also describe a new universal program (DISASTER++) for the calculation of (2+1)-jet observables.
متن کامل