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CERN Document Server 2,049 records found  1 - 10nextend  jump to record: Search took 1.21 seconds. 
1.
(100)
Search for single top quark production via contact interactions at LEP2 / DELPHI Collaboration
Single top quark production via four-fermion contact interactions associated to flavour-changing neutral currents was searched for in data taken by the DELPHI detector at LEP2. The data were accumulated at centre-of-mass energies ranging from 189 to 209 GeV, with an integrated luminosity of 598.1 pb^-1. [...]
arXiv:1102.4455; CERN-PH-EP-2010-056; CERN-PH-EP-2010-056.- Geneva : CERN, 2011 - 22 p. - Published in : Eur. Phys. J. C 71 (2011) 1555 Fulltext: CERN-PH-EP-2010-056 - PDF; arXiv:1102.4455 - PDF; Preprint: PDF;
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2.
(91)
Measurements of CP-conserving Trilinear Gauge Boson Couplings WWV (V = $\gamma$,Z) in $e^+e^-$ Collisions at LEP2 / DELPHI Collaboration
The data taken by DELPHI at centre-of-mass energies between 189 and 209 GeV are used to place limits on the CP-conserving trilinear gauge boson couplings Delta_g1z, lambda_gamma and Delta_kappag associated to W+W- and single W production at LEP2. Using data from the jjlv, jjjj, jjX and lX final states, where j, l and X represent a jet, a lepton and missing four-momentum, respectively, the following limits are set on the couplings when one parameter is allowed to vary and the others are set to their Standard Model values of zero: Delta_g1z = -0.025^{+0.033}_{-0.030}, lambda_gamma = 0.002^{+0.035}_{-0.035} and Delta_kappag = 0.024^{+0.077}_{-0.081} . [...]
arXiv:1002.0752; CERN-PH-EP-2009-020; CERN-PH-EP-2009-020.- Geneva : CERN, 2010 - 38 p. - Published in : Eur. Phys. J. C 66 (2010) 35-36 Fulltext: arXiv:1002.0752 - PDF; 10052_2010_1254_OnlinePDF - PDF; External link: Preprint
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3.
(91)
A study of the b-quark fragmentation function with the DELPHI detector at LEP I and an averaged distribution obtained at the Z Pole / DELPHI Collaboration
The nature of b-quark jet hadronisation has been investigated using data taken at the Z peak by the DELPHI detector at LEP. Two complementary methods are used to reconstruct the energy of weakly decaying b-hadrons, E^weak_B. [...]
arXiv:1102.4748; CERN-PH-EP-2010-057; CERN-PH-EP-2010-057.- Geneva : CERN, 2011 - 50 p. - Published in : Eur. Phys. J. C 71 (2011) 1557 Fulltext: CERN-PH-EP-2010-057 - PDF; arXiv:1102.4748 - PDF; Preprint: PDF; External link: Rivet analyses reference
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4.
(88)
Study of the Dependence of Direct Soft Photon Production on the Jet Characteristics in Hadronic $Z^0$ Decays / DELPHI Collaboration
An analysis of the direct soft photon production rate as a function of the parent jet characteristics is presented, based on hadronic events collected by the DELPHI experiment at LEP1. The dependences of the photon rates on the jet kinematic characteristics (momentum, mass, etc.) and on the jet charged, neutral and total hadron multiplicities are reported. [...]
arXiv:1004.1587; CERN-PH-EP-2009-014; CERN-PH-EP-2009-014.- 2010 - 40 p. - Published in : Eur. Phys. J. C 67 (2010) 343-366 Fulltext: arXiv:1004.1587 - PDF; 10052_2010_1315_OnlinePDF - PDF; External link: Preprint
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5.
(83)
A Study of $b\overline{b}$ Production in $e^{+}e^{-}$ Collisions at $\sqrt{s}$ = 130-207 GeV / DELPHI Collaboration
Measurements are presented of R_b, the ratio of the b bbar cross-section to the q qbar cross-section in e+e- collisions, and the forward-backward asymmetry A^b_FB at twelve energy points in the range sqrt(s) = 130-207 GeV. These results are found to be consistent with the Standard Model expectations. [...]
arXiv:0901.4461; CERN-PH-EP-2008-018; CERN-PH-EP-2008-018.- 2009 - 21 p. - Published in : Eur. Phys. J. C 60 (2009) 1-15 Fulltext: arXiv:0901.4461 - PDF; 10052_2009_917_OnlinePDF - PDF; External link: Fulltext
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6.
(72)
Electroweak Measurements in Electron-Positron Collisions at W-Boson-Pair Energies at LEP / ALEPH Collaboration
Electroweak measurements performed with data taken at the electron-positron collider LEP at CERN from 1995 to 2000 are reported. The combined data set considered in this report corresponds to a total luminosity of about 3~fb$^{-1}$ collected by the four LEP experiments ALEPH, DELPHI, L3 and OPAL, at centre-of-mass energies ranging from $130~GeV$ to $209~GeV$ [...]
arXiv:1302.3415; CERN-PH-EP-2013-022; CERN-PH-EP-2013-022.- Geneva : CERN, 2013 - 126 p. - Published in : Phys. Rep. 532 (2013) 119-244 Draft (restricted): PDF; Fulltext: CERN-PH-EP-2013-022 - PDF; arXiv:1302.3415 - PDF; External link: Preprint
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7.
(72)
Inclusive single-particle production in two-photon collisions at LEP II with the DELPHI detector / DELPHI Collaboration
A study of the inclusive charged hadron production in two-photon collisions is described. The data were collected with the DELPHI detector at LEP II. [...]
arXiv:0906.5302; CERN-PH-EP-2008-017; CERN-PH-EP-2008-017.- Geneva : CERN, 2009 - 15 p. - Published in : Phys. Lett. B 678 (2009) 444-449 Fulltext: arXiv:0906.5302 - PDF; S0370269309007503 - XML;
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8.
(71)
Search for $B^{0}_{s}-\overline{B^{0}_{s}}$ oscillations in DELPHI using high-$p_{t}$ leptons / DELPHI Collaboration
Oscillations in the $\mbox{B}^0_s$-$\overline{\mbox{B}^0_s}$ system were studied in events selected from about 4.3 million hadronic Z$^0$ decays registered by DELPHI between 1992 and 2000.\\ This paper presents updates of two published analyses. The first analysis, which utilizes leptons emitted with large momentum transverse to a jet, was improved by means of a better algorithm for the vertex reconstuction and a new algorithm for flavour-tagging at production time [...]
hep-ex/0404013; CERN-EP-2003-089; CERN-EP-2003-089.- Geneva : CERN, 2004 - 36 p. Fulltext: arXiv:hep-ex_0404013 - PDF; 0404013 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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9.
(69)
Measurement of the Tau Lepton Polarisation at LEP2 / DELPHI Collaboration
A first measurement of the average polarisation P_tau of tau leptons produced in e+e- annihilation at energies significantly above the Z resonance is presented. The polarisation is determined from the kinematic spectra of tau hadronic decays. [...]
arXiv:0710.1368; CERN-PH-EP-2007-010; CERN-PH-EP-2007-010.- 2008 - 17 p. - Published in : Phys. Lett. B 659 (2008) 65-73 Fulltext: PDF; External link: Preprint
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10.
(69)
Study of b-quark mass effects in multijet topologies with the DELPHI detector at LEP / DELPHI Collaboration
The effect of the heavy b-quark mass on the two, three and four-jet rates is studied using LEP data collected by the DELPHI experiment at the Z peak in 1994 and 1995. The rates of b-quark jets and light quark jets (l = uds) in events with n = 2, 3, and 4 jets, together with the ratio of two and four-jet rates of b-quarks with respect to light-quarks, R_n^bl, have been measured with a double-tag technique using the CAMBRIDGE jet-clustering algorithm. [...]
arXiv:0804.3883; CERN-PH-EP-2007-011; CERN-PH-EP-2007-011.- 2008 - 24 p. - Published in : Eur. Phys. J. C 55 (2008) 525-538 Fulltext: PDF; External link: Fulltext
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