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CERN Document Server 找到 341 筆記錄  1 - 10下一個最後  跳到記錄: 檢索需時 0.57 秒. 
1.
Colour reconnection in $e^{+}e^{-} \rightarrow W^{+}W^{-}$ at $\sqrt{s}=189-209 GeV$ / OPAL Collaboration
The effects of the final state interaction phenomenon known as colour reconnection are investigated at centre-of-mass energies in the range sqrt(s) ~ 189-209 GeV using the OPAL detector at LEP. Colour reconnection is expected to affect observables based on charged particles in hadronic decays of W+W-. [...]
hep-ex/0508062; CERN-PH-EP-2005-035; CERN-PH-EP-2005-035.- Geneva : CERN, 2006 - 30 p. - Published in : Eur. Phys. J. C 45 (2006) 291-305 Fulltext: 0508062 - PDF; arXiv:hep-ex_0508062 - PDF; phep-2005-035 - PDF; External link: Preprint
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2.
Study of Bose-Einstein Correlations in $e^{+}e^{-}\to W^{+}W^{-}$ events at LEP / OPAL Collaboration
Bose-Einstein correlation between like-sign charged-particle pairs in e+e- -> W+W- events recorded with the OPAL detector at LEP at centre-of-mass energies between 183 GeV and 209 GeV are studied. Recently proposed methods which allow direct searches for correlations in the data via distributions of test variables are used to investigate the presence of correlations between hadrons originating from different W bosons in W+W- -> qqqq events. [...]
hep-ex/0403055; CERN-PH-EP-2004-008; CERN-PH-EP-2004-008.- Geneva : CERN, 2004 - 29 p. - Published in : Eur. Phys. J. C 36 (2004) 297-308 Fulltext: arXiv:hep-ex_0403055 - PDF; phep-2004-008 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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3.
T Violation Induced by Supersymmetry in $t\overline{t}$ and $W^+ W^-$ Physics / Christova, Ekaterina (CERN) ; Fabbrichesi, Marco (CERN)
$T$-odd, $CP$-violating correlations of polarizations and momenta provide a promising testing ground for new physics beyond the standard model. We estimate the contribution of the minimal supersymmetric extension of the standard model to two such observables: in the production of $t\bar{t}$, we look for a term proportional to \mbox{$\mbox{\bf J}_t \cdot \left( \mbox{\bf p}_q \times \mbox{\bf p}_{t} \right)$}---where {\bf J}$_t$ is the polarization of the $t$ quark and {\bf p}$_{q,t}$ are the momenta of the initial and final particles---and find that it is of the order of $10~{-2} \times (\alpha_W/\pi)$. [...]
hep-ph/9302315; CERN-TH-6751-92; CERN-TH-6751-92.- Geneva : CERN, 1993 - 20 p. - Published in : Phys. Lett. B 315 (1993) 338-348 Access to fulltext document: 9302315 - PDF; th-6751-92 - PDF; Fulltext: PDF; External link: hep-ph/9302315 PDF - Please contact the library if you need to access this document.
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4.
Bose-Einstein Correlations in $e^{+}e^{-} \to W^{+}W^{-}$ at a Linear Collider / Chekanov, S.V. (Argonne) ; De Roeck, A. (DESY ; CERN) ; De wolf, E.A. (Antwerp U.)
We show that the most popular method to simulate Bose-Einstein (BE) interference effects predicts negligible correlations between identical pions originating from the hadronic decay of different W's produced in e+e- -> W+W- -> 4 jets at typical linear collider energies..
hep-ph/0001081; ANL-HEP-CP-00-003; LC-TH-2000-009; ANL-HEP-CP-2000-03.- Argonne, IL : Argonne Nat. Lab., 2001 - 5 p. - Published in : , pp. 539-542 Access to fulltext document: PDF; Fulltext: PDF; External link: DESY LC Notes Server
In : 2nd ECFA/DESY Study, 1998-2001, pp.539-542
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5.
Measurement of the $W^{+}W^{-} \gamma$ Cross-section and First direct Limits on Anomalous Electroweak Quartic Gauge Couplings / OPAL Collaboration
A study of W+W- events accompanied by hard photon radiation produced in e+e- collisions at LEP is presented. Events consistent with two on-shell W-bosons and an isolated photon are selected from 183pb^-1 of data recorded at root{s}=189GeV. [...]
hep-ex/9910069; CERN-EP-99-130; CERN-EP-99-130.- Geneva : CERN, 1999 - 24 p. - Published in : Phys. Lett. B 471 (1999) 293-3307 Fulltext: arXiv:hep-ex_9910069 - PDF; 9910069 - PDF; External link: DURHAM - Please contact the library if you need to access this document.
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6.
$W^{+} W^{-}$ cross-section and W mass measurement with the DELPHI detector at LEP / Duperrin, A (Lyon, IPN)
LYCEN-99-34.- Lyon : CNRS Lyon. Inst. Phys. Nucl., 2000 - 13 p. Access to fulltext document: TIF PDF;
In : 14th Lake Louise Winter Institute : Electroweak Physics, Lake Louise, Canada, 14 - 20 Feb 1999, pp.331-342
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7.
Mesure de la section efficace totalement leptonique et des rapports d'embranchement des bosons $W^{+-}$ dans le cadre de l'expérience ALEPH à LEP2 / Faïf, G
This thesis work is part of the precision tests done at LEP2 [...]
CERN-THESIS-99-010 CERN-ALEPH-THESIS-99-002. - Geneva : CERN, 1998. - 166 p.

Access to fulltext document - Access to fulltext document - CERN library copies
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8.
Measurements of the W boson mass from $e^+ e^- \to W^+ W^- \to l\overline{\nu} q\overline{q}$ events with the ALEPH detector / Thomson, E
CERN-THESIS-99-008 CERN-ALEPH-THESIS-99-005. - Geneva : CERN, 1998. - 228 p.

Access to fulltext document - Access to fulltext document - CERN library copies
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9.
Colour reconnection studies in $e^{+}e^{-} \to W^{+}W^{-}$ at $\sqrt{s}$=183 GeV / OPAL Collaboration
The predicted effects of final state interactions such as colour reconnection are investigated by measuring properties of hadronic decays of W bosons, recorded at a centre-of-mass energy of sqrt(s)=182.7 GeV in the OPAL detector at LEP. Dependence on the modelling of hadronic W decays is avoided by comparing W+W- -> qqqq events with the non-leptonic component of W+W- -> qqlnu events. [...]
hep-ex/9901019; CERN-PPE-98-196; CERN-PPE-98-0196; CERN-EP-98-196; CERN-EP-98-196.- Geneva : CERN, 1999 - 21 p. - Published in : Phys. Lett. B 453 (1999) 153-8 Fulltext: 9901019 - PDF; arXiv:hep-ex_9901019 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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10.
Bose-Einstein Correlations in $e^{+} e^{-} \to W^{+}W^{-}$ at 172 and 183 GeV / OPAL Collaboration
Bose-Einstein correlations between like-charge pions are studied in hadronic final states produced by e+e- annihilations at center-of-mass energies of 172 and 183 GeV. Three event samples are studied, each dominated by one of the processes W+W- to qqlnu, W+W- to qqqq, or (Z/g)* to qq. [...]
hep-ex/9811030; CERN-EP-98-174; CERN-EP-98-174.- Geneva : CERN, 1999 - 25 p. - Published in : Eur. Phys. J. C 8 (1999) 559-71 Fulltext: 9811030 - PDF; arXiv:hep-ex_9811030 - PDF; External link: hep-ex/9811030 PDF - Please contact the library if you need to access this document.
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