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1.
Measurement of the mass of the W boson in $e^{+}e^{-}$ collisions using the fully leptonic channel / OPAL Collaboration
A novel method of determining the mass of the W boson in the W/sup + /W/sup -/ to l nu l' nu ' channel is presented and applied to 667 pb /sup -1/ of data recorded at center-of-mass energies in the range 183-207 GeV with the OPAL detector at LEP. The measured energies of charged leptons and the results of a new procedure based on an approximate kinematic reconstruction of the events are combined to give: M/sub W/=80.41+or-0.41+or-0.13 geV, where the first error is statistical and the second is systematic. [...]
2003 - Published in : Eur. Phys. J. C 26 (2003) 321-330
2.
CERN LHC signatures of resonant CP violation in a minimal supersymmetric Higgs sector / Ellis, Jonathan Richard (CERN) ; Jae Sik Lee ; Pilaftsis, Apostolos
We present the general formalism for studying CP-violating phenomena in the production, mixing and decay of a coupled system of CP- violating neutral Higgs bosons at high-energy colliders. Considering the minimal supersymmetric standard model (MSSM) Higgs sector in which CP violation is radiatively induced by phases in the soft supersymmetry-breaking third-generation trilinear squark couplings and gaugino masses, we apply our formalism to neutral Higgs production via bb, gg and W/sup +/W/sup -/ collisions at the CERN LHC. [...]
2004 - Published in : Phys. Rev. D 70 (2004) 075010-16 APS Published version, local copy: PDF;
3.
Coherent exclusive exponentiation for precision Monte Carlo calculations of fermion pair production/precision predictions fo.stable W/sup +/W/sup -/ pairs / Ward, B F L ; Jadach, Stanislaw ; Placzek, W ; Skrzypek, M ; Was, Z
We present the new coherent exclusive exponentiation (CEEX), in comparison to the older exclusive exponentiation (EEX) and the semi-analytical inclusive exponentiation (IEX), for the process e/sup +/e /sup -/ to ff + n gamma , f = mu , tau , d, u, s, c, b, with validity for centre of mass energies from the tau lepton threshold to 1 TeV. We analyse 2f numerical results at the Z-peak, 189 GeV and 500 GeV. [...]
2001
In : 30th International Conference on High-energy Physics, Osaka, Japan, 27 Jul - 2 Aug 2000, pp.677-81 (vol.1)
4.
Higgs searches at LHC / Kinnunen, Ritva
The expected discovery potential for Standard Model and MSSM Higgses at the LHC in CMS and ATLAS experiments is discussed. (17 refs)..
2000
In : International Europhysics Conference on High-Energy Physics, Tampere, Finland, 15 - 21 Jul 1999, pp.779-82
5.
QCD and FSI at LEP / Watson, N K (Sch of Phys & Astron, Univ of Birmingham, UK)
Significant progress has recently been made in measurement of the strong coupling constant, alpha /sub S/, and studies of colour reconnection in W/sup +/W/sup -/ decays at LEP. The results presented combine all LEP data and are preliminary. [...]
2003 Fulltext: PDF;
In : 32nd International Symposium on Multiparticle Dynamics, Alushta, Ukraine, 7 - 13 Sep 2002, pp.311-14
6.
Neutron irradiation of RPCs for the CMS experiment / Abbrescia, M ; Altieri, S ; Belli, G ; Bruno, G ; Colaleo, A ; Guida, R ; Iaselli, G ; Loddo, F ; Maggi, M ; Marangelli, B et al.
All the CMS muon stations will be equipped with Resistive Plate Chambers (RPCs). They will be exposed to high neutron background environment during the LHC running. [...]
2003 - Published in : Nucl. Instrum. Methods Phys. Res., A 508 (2003) 120-123
7.
New method of fast simulation for a hadron calorimeter response / Kulchitskii, Yu A ; Sutiak, J ; Tokar, S ; Zenis, T
In this work we present the new method of a fast Monte-Carlo simulation of a hadron calorimeter response. It is based on the three-dimensional parameterization of the hadronic shower obtained from the ATLAS TILECAL test beam data and GEANT simulations. [...]
2003 - Published in : Kratkie Soobsc. OIJAI: 2 (2003) , pp. 52-70
8.
A measurement of the $\tau^{-} \to \mu^{-} \nu_{\mu} \nu_{\tau}$ branching ratio / OPAL Collaboration
The tau /sup -/ to mu /sup -/ nu /sub mu / nu /sub tau / branching ratio has been measured using data collected from 1990 to 1995 by the OPAL detector at the LEP collider. The resulting value of B( tau /sup -/ to mu /sup -/ nu /sub mu / nu /sub tau /) = 0.1734 +or- 0.0009 (stat) +or- 0.0006(syst) has been used in conjunction with other OPAL measurements to test lepton universality, yielding the coupling constant ratios g/sub mu //g/sub e/ = 1.0005 +or- 0.0044 and g/sub tau //g/sub e/ = 1.0031 +or- 0.0048, in good agreement with the Standard Model prediction of unity [...]
2003 - Published in : Phys. Lett. B 551 (2003) 35-48
9.
Search for the standard model Higgs boson in $e^{+}e^{-}$ four- jet topology using neural networks and discriminant analysis / Mjahed, M
We present an attempt to separate between Higgs boson events (e/sup + /e/sup -/ to ZH to qqbb) and other physics processes in the 4-jet channel (e/sup +/e/sup -/ to Z/ gamma , W/sup +/W, ZZ to 4jets), using the discriminant analysis and neural networks methods. Events were produced at LEP2 energies, using the Lund Monte Carlo generator and the Aleph package. [...]
2003 - Published in : Nucl. Phys. B, Proc. Suppl. 119 (2003) 1027-9
In : 20th International Symposium on Lattice Field Theory, Cambridge, MA, USA, 24 - 29 Jun 2002, pp.1027-9
10.
Measurement of the Mass of the W Boson in $e^+ e^-$ collisions using the Fully Leptonic Channel / OPAL Collaboration
A novel method of determining the mass of the W boson in the W+W- -> lnu lnu channel is presented and applied to 667pb^-1 of data recorded at the center-of- mass energies in the range 183-207 GeV with the OPAL detector at LEP. The Measured energies of charged leptons and the results of a new procedure based on an approximate kinematic reconstruction of the events are combined to give: Mw=80.41+-0.41+-0.13 GeV, when the first error is statistical and the second is systematic. [...]
hep-ex/0203026; CERN-EP-2002-022; CERN-EP-2002-022.- Geneva : CERN, 2003 - 23 p. - Published in : Eur. Phys. J. C 26 (2003) 321-330 Fulltext: ep-2002-022 - PDF; arXiv:hep-ex_0203026 - PDF; External link: Preprint - Please contact the library if you need to access this document.

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