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Träfflista för sökning "WFRF:(Anassontzis EG) "

Sökning: WFRF:(Anassontzis EG)

  • Resultat 1-25 av 83
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1.
  • Abreau, P, et al. (författare)
  • Photon events with missing energy at root s=183 to 189 GeV
  • 2000
  • Ingår i: EUROPEAN PHYSICAL JOURNAL C. - : SPRINGER-VERLAG. - 1434-6044. ; 17:1, s. 53-65
  • Tidskriftsartikel (refereegranskat)abstract
    • The production of single photons has been studied in the reaction e(+)e(-) --> gamma +invisible particles at centre-of-mass energies of 183 GeV and 189 GeV. A previously published analysis of events with multiphoton final states accompanied by missing ene
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3.
  • Abreu, P, et al. (författare)
  • A measurement of the Tau topological branching ratios
  • 2001
  • Ingår i: EUROPEAN PHYSICAL JOURNAL C. - : SPRINGER-VERLAG. - 1434-6044. ; 20:4, s. 617-637
  • Tidskriftsartikel (refereegranskat)abstract
    • Using data collected in the DELPHI detector at LEP-1, measurements of the inclusive T branching ratios for decay modes containing one, three, or five charged particles have been performed, giving the following results: B-1 equivalent to B T- (particle)(-)
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4.
  • Abreu, P, et al. (författare)
  • A precise measurement of the partial decay width ratio R-b(0) = Gamma(b(b)over-bar)/Gamma(had)
  • 1999
  • Ingår i: EUROPEAN PHYSICAL JOURNAL C. - : SPRINGER VERLAG. - 1434-6044. ; 10:3, s. 415-442
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • The partial decay width of the Z to b (b) over bar quark pairs has been measured by the DELPHI detector at LEP using data taken in the years 1992 to 1995. Decays of b-hadrons were tagged by several methods using tracks with large impact parameters and/or
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5.
  • Abreu, P, et al. (författare)
  • A precise measurement of the tau polarisation at LEP-1
  • 2000
  • Ingår i: EUROPEAN PHYSICAL JOURNAL C. - : SPRINGER VERLAG. - 1434-6044. ; 14:4, s. 585-611
  • Tidskriftsartikel (refereegranskat)abstract
    • The tau polarisation has been studied with the e(+)e(-) --> tau(+)tau(-) data collected by the DELPHI detector at LEP in 1993, 1994 and 1995 around the Z resonance firstly through the exclusive decay channels ev (v) over bar, mu v (v) over bar, pi v, rho
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6.
  • Abreu, P, et al. (författare)
  • A search for eta '(c) production in photon-photon fusion at LEP
  • 1998
  • Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 441:1-4, s. 479-490
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • A search for the production of the eta(c)' meson, the first radial excitation of the ground state of charmonium eta(c)(2980), in the photon-photon fusion reaction at LEP has been performed using the data collected by the DELPHI detector during 1992-1996.
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7.
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8.
  • Abreu, P, et al. (författare)
  • A search for invisible Higgs bosons produced in e(+)e(-) interactions at LEP 2 energies
  • 1999
  • Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 459:1-3, s. 367-381
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • Searches for HZ production with the Higgs boson decaying into an invisible final state have been performed with the data collected by the DELPHI experiment up to the centre-of-mass energy of 183 GeV. The hadronic and muon pair final states of the Z boson
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9.
  • Abreu, P, et al. (författare)
  • A study of the Lorentz structure in tau decays
  • 2000
  • Ingår i: EUROPEAN PHYSICAL JOURNAL C. - : SPRINGER-VERLAG. - 1434-6044. ; 16:2, s. 229-252
  • Tidskriftsartikel (refereegranskat)abstract
    • This paper describes a measurement of the Michel parameters, eta, rho, xi, xi delta, and the average v(tau) helicity, h(nu tau), in tau lepton decays together with the first measurement of the tensor coupling in the weak charged current. The tau(+)tau(-)
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10.
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11.
  • Abreu, P, et al. (författare)
  • Consistent measurements of alpha(s) from precise oriented event shape distributions
  • 2000
  • Ingår i: EUROPEAN PHYSICAL JOURNAL C. - : SPRINGER VERLAG. - 1434-6044. ; 14:4, s. 557-584
  • Tidskriftsartikel (refereegranskat)abstract
    • An updated analysis using about 1.5 million events recorded at root s = M-Z with the DELPHI detector in 1994 is presented. Eighteen infrared and collinear safe event shape observables are measured as a function of the polar angle of the thrust. axis. The
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12.
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13.
  • Abreu, P, et al. (författare)
  • Cross-sections and leptonic forward-backward asymmetries from the Z(0) running of LEP
  • 2000
  • Ingår i: EUROPEAN PHYSICAL JOURNAL C. - : SPRINGER-VERLAG. - 1434-6044. ; 16:3, s. 371-405
  • Tidskriftsartikel (refereegranskat)abstract
    • During 1993 and 1995 LEP was run at 3 energies near the Z(0) peak in order to give improved measurements of the mass and width of the resonance. During 1994, LEP operated only at the Z(0) peak. In total DELPHI accumulated data corresponding to an integrat
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14.
  • Abreu, P, et al. (författare)
  • Determination of P(c -> D*(+)) and BR(c -> l(+)) at LEP 1
  • 2000
  • Ingår i: EUROPEAN PHYSICAL JOURNAL C. - : SPRINGER VERLAG. - 1434-6044. ; 12:2, s. 209-224
  • Tidskriftsartikel (refereegranskat)abstract
    • The probability P(c --> D*(+)) that a charm quark fragments into a D*+ meson and the c --> l(+) semileptonic branching fraction were measured in Z(0) decay into c (c) over bar events. From the analysis of 3.5 Million Z(0) events collected from 1992 to 199
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15.
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17.
  • Abreu, P, et al. (författare)
  • Energy dependence of event shapes and of alpha(s) at LEP 2
  • 1999
  • Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 456:2-4, s. 322-340
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • Infrared and collinear safe event shape distributions and their mean values are determined using the data taken at five different centre of mass energies above M-Z with the DELPHI detector at LEP. From the event shapes, the strong coupling alpha(s) is ext
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18.
  • Abreu, P, et al. (författare)
  • Energy dependence of inclusive spectra in e(+)e(-) annihilation
  • 1999
  • Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 459:1-3, s. 397-411
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • Inclusive charged hadron distributions as obtained from the DELPHI measurements at 130, 136, 161, 172 and 183 GeV are presented as a function of the variables rapidity, xi(p), p and transversal momenta. Data are compared with event generators and with MLL
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19.
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20.
  • Abreu, P, et al. (författare)
  • Identified charged particles in quark and gluon jets
  • 2000
  • Ingår i: EUROPEAN PHYSICAL JOURNAL C. - : SPRINGER-VERLAG. - 1434-6044. ; 17:2, s. 207-222
  • Tidskriftsartikel (refereegranskat)abstract
    • A sample of 2.2 million hadronic Z decays, selected from the data recorded by the DELPHI detector at LEP during 1994-1995 was used for an improved measurement of inclusive distributions of pi (+), K+ and p and their antiparticles in gluon and quark jets.
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21.
  • Abreu, P, et al. (författare)
  • Inclusive Sigma(-) and Lambda(1520) production in hadronic Z decays
  • 2000
  • Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 475:3-4, s. 429-447
  • Tidskriftsartikel (refereegranskat)abstract
    • Production of Sigma(-) and Lambda(1520) in hadronic Z decays has been measured using the DELPHI detector at LEP. The Sigma(-) is directly reconstructed as a charged track in the DELPHI microvertex detector and is identified by its Sigma --> n pi decay lea
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22.
  • Abreu, P, et al. (författare)
  • Lambda(b) polarization in Z(0) decays at LEP
  • 2000
  • Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 474:1-2, s. 205-222
  • Tidskriftsartikel (refereegranskat)abstract
    • The longitudinal polarization of the Lambda(b) baryon is measured at the LEP e(+)e(-) collider by DELPHI. It is determined from the charged lepton and neutrino energy spectra in 249 +/- 19 Lambda(b) semileptonic decays reconstructed in approximate to 3.5
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23.
  • Abreu, P, et al. (författare)
  • Limits on the masses of supersymmetric particles at root s=189 GeV
  • 2000
  • Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 489:1-2, s. 38-54
  • Tidskriftsartikel (refereegranskat)abstract
    • Searches for charginos, neutralinos and sleptons at LEP2 centre-of-mass energies from 130 GeV to 189 GeV have been used to set lower limits on the mass of the Lightest Supersymmetric Particle and other supersymmetric particles within the MSSM framework. R
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24.
  • Abreu, P, et al. (författare)
  • Measurement and interpretation of fermion-pair production at LEP energies from 130 to 172 GeV
  • 1999
  • Ingår i: EUROPEAN PHYSICAL JOURNAL C. - : SPRINGER VERLAG. - 1434-6044. ; 11:3, s. 383-407
  • Tidskriftsartikel (refereegranskat)abstract
    • The data collected with the DELPHI detector at centre-of-mass energies between 130 and 172 GeV, during LEP operation in 1995 and 1996, have been used to determine the hadronic and leptonic cross-sections and leptonic forward-backward asymmetries. In addit
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25.
  • Abreu, P, et al. (författare)
  • Measurement and interpretation of fermion-pair production at LEP energies of 183 and 189 GeV
  • 2000
  • Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 485:1-3, s. 45-61
  • Tidskriftsartikel (refereegranskat)abstract
    • An analysis of the data collected in 1997 and 1998 with the DELPHI detector at e(+)e(-) collision energies close to 183 and 189 GeV was performed in order to extract the hadronic and leptonic fermion-pair cross-sections, as well as the leptonic forward-ba
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  • Resultat 1-25 av 83

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