| 51. |
- Abreu, P, et al.
(författare)
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Measurement of the multiplicity of gluons splitting to bottom quark pairs in hadronic Z(0) decays
- 1997
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Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 405:1-2, s. 202-214
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- An inclusive measurement of the average multiplicity of b (b) over bar pairs from gluons, g(b (b) over bar), in hadronic Z(0) events collected by the DELPHI experiment at LEP, is presented. A counting technique, based on jet b-tagging in 4-jet events, has
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| 52. |
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| 53. |
- Abreu, P, et al.
(författare)
-
Measurement of the quark and gluon fragmentation functions in Z(0) hadronic decays
- 1999
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Ingår i: EUROPEAN PHYSICAL JOURNAL C. - : SPRINGER VERLAG. - 1434-6044. ; 6:1, s. 19-33
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The transverse, longitudinal and asymmetric components of the fragmentation function are measured from the inclusive charged particles produced in e(+)e(-) collisions at LEP. As in deep inelastic scattering, these data are important for tests of QCD. The
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| 54. |
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| 55. |
- Abreu, P, et al.
(författare)
-
Measurement of the spin density matrix for the rho(0), K*(0)(892) and phi produced in Z(0) decays
- 1997
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Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 406:3, s. 271-286
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The spin density matrix elements for the rho(0), K-*0(892) and phi produced in hadronic Z(0) decays are measured in the DELPHI detector. There is no evidence for spin alignment of the K-*0(892) and phi, in the region x(p) less than or equal to 0.3 (x(p) =
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| 56. |
- Abreu, P, et al.
(författare)
-
Measurement of the transverse spin correlation in Z->tau(+)tau(-) decays
- 1997
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Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 404:1-2, s. 194-206
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The measurement of the correlation between the transverse spin components of tau(+)tau(-) pairs collected during 1992 to 1994 with the DELPHI detector at LEP1 is presented. A value C-TT = 0.87 +/- 0.20 (stat.)(-0.12)(+0.10) (syst.) was obtained for the co
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| 57. |
- Abreu, P, et al.
(författare)
-
Measurement of the triple gluon vertex from double quark tagged 4-jet events
- 1997
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Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 414:3-4, s. 401-418
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The 4-jet events collected by the DELPHI experiment at LEP1 in 1992, 1993 and 1994 are analysed to determine the contribution of the triple-gluon vertex. Two of the four jets are tagged as jets from b- or c-quarks using lifetime and lepton transverse mome
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| 58. |
- Abreu, P, et al.
(författare)
-
Measurement of the W-pair cross-section and of the W mass in e(+)e(-) interactions at 172 GeV
- 1998
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Ingår i: EUROPEAN PHYSICAL JOURNAL C. - : SPRINGER VERLAG. - 1434-6044. ; 2:4, s. 581-595
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- From a data sample of 9.98 pb(-1) integrated luminosity, collected by DELPHI at a centre-of-mass energy of 172 GeV, 118 events were selected as W-pair candidates. From these, the branching fraction Br(W --> q (q) over bar) was measured to be 0.660(-0.037)
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| 59. |
- Abreu, P, et al.
(författare)
-
Measurement of trilinear gauge couplings in e(+)e(-) collisions at 161 GeV and 172 GeV
- 1998
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Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 423:1-2, s. 194-206
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Trilinear gauge boson couplings are measured using data taken by DELPHI at 161 GeV and 172 GeV, Values for WWV couplings (V = Z,gamma) are determined from a study of the reactions e(+)e(-) --> W+W- and e(+)e(-) --> We nu, using differential distributions
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| 60. |
- Abreu, P, et al.
(författare)
-
Measurement of vertical bar V-cs vertical bar using W decays at LEP2
- 1998
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Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 439:1-2, s. 209-224
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Decays of W+/- bosons, produced at LEP2, have been used to measure the \V-cs\ element of the Cabibbo-Kobayashi-Maskawa matrix. Values for \V-cs\ were extracted both from the measured hadronic branching ratio of W+/- decays and by tagging the flavour of ha
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