| 11. |
- Abreu, P, et al.
(författare)
-
m(b) at M-Z
- 1998
-
Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 418:3-4, s. 430-442
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The value of the Lr quark, mass at the M-Z scale defined in the <(MS)over bar> renormalization scheme, m(b)(M-Z), was determined using 2.8 million hadronic Z decays collected during 1992-1994 by the DELPHI detector to be m(b)(M-Z) = 2.67 +/- 0.25 (stat.)
|
|
| 12. |
- Abreu, P, et al.
(författare)
-
Measurement and interpretation of the W-pair cross-section in e(+)e(-) interactions at 161 GeV
- 1997
-
Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 397:1-2, s. 158-170
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- In 1996 LEP ran at a centre-of-mass energy of 161 GeV, just above the threshold of W-pair production. DELPHI accumulated data corresponding to an integrated luminosity of 9.93 pb(-1), and observed 29 events that are considered as candidates for W-pair pro
|
|
| 13. |
- Abreu, P, et al.
(författare)
-
Measurement of B-d(0)-(B-d(0))over-bar oscillations
- 1997
-
Ingår i: ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS. - : SPRINGER VERLAG. - 0170-9739. ; 76:4, s. 579-598
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- B-d(0) meson oscillations are measured in hadronic Z(0) decays using the charge of a lepton or the mean charge of an event hemisphere to sign the presence of a b or a (b) over bar quark when it is produced, and using the charge of a lepton emitted at larg
|
|
| 14. |
- Abreu, P, et al.
(författare)
-
Measurement of correlations between pions from different W's in e(+)e(-)->W+W- events
- 1997
-
Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 401:1-2, s. 181-191
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Correlations between pions from different W's in e(+)e(-) --> W+W- events are studied using data collected by the DELPHI detector at LEP running at a centre-of-mass energy of 172 GeV in 1996. At the present level of statistics, no enhancement of the corre
|
|
| 15. |
- Abreu, P, et al.
(författare)
-
Measurement of the multiplicity of gluons splitting to bottom quark pairs in hadronic Z(0) decays
- 1997
-
Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 405:1-2, s. 202-214
-
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
|
|
| 16. |
- Abreu, P, et al.
(författare)
-
Measurement of the quark and gluon fragmentation functions in Z(0) hadronic decays
- 1999
-
Ingår i: EUROPEAN PHYSICAL JOURNAL C. - : SPRINGER VERLAG. - 1434-6044. ; 6:1, s. 19-33
-
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
|
|
| 17. |
- 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
-
Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 406:3, s. 271-286
-
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) =
|
|
| 18. |
- Abreu, P, et al.
(författare)
-
Measurement of the transverse spin correlation in Z->tau(+)tau(-) decays
- 1997
-
Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 404:1-2, s. 194-206
-
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
|
|
| 19. |
- Abreu, P, et al.
(författare)
-
Measurement of the triple gluon vertex from double quark tagged 4-jet events
- 1997
-
Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 414:3-4, s. 401-418
-
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
|
|
| 20. |
- Abreu, P, et al.
(författare)
-
Observation of charge-ordering in particle production in hadronic Z(0) decay
- 1997
-
Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 407:2, s. 174-184
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Analysis of the rapidity structure of charge correlations in hadronic events from Z(0) decays gives evidence for chain-like charge-ordering of particle production along the thrust axis, as predicted by 'QCD-motivated' string-like fragmentation models. (C)
|
|
