| 1. |
- Abreu, P., et al.
(författare)
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Measurement of the gluon fragmentation function and a comparison of the scaling violation in gluon and quark jets
- 2000
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Ingår i: European Physical Journal C. - : Springer Science and Business Media LLC. - 1434-6044 .- 1434-6052. ; 13:4, s. 573-589
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Tidskriftsartikel (refereegranskat)abstract
- The fragmentation functions of quarks and gluons are measured in various three-jet topologies in Z decays from the full data set collected with the DELPHI detector at the Z resonance between 1992 and 995. The results at different values of transverse momentum-like scales are compared. A parameterization of the quark and gluon fragmentation functions at a fixed reference scale is given. The quark and gluon fragmentation functions show the predicted pattern of scaling violations. The scaling violation for quark jets as a function of a transverse momentum-like scale is in a good agreement with that observed in lower energy e+e- annihilation experiments. For gluon jets it appears to be significantly stronger. The scale dependences of the gluon and quark fragmentation functions agree with the prediction of the DGLAP evolution equations from which the colour factor ratio CA/CF is measured to be: CA/CF = 2.26 ± 0.09stat. ± 0.06sys. ± 0.12clus.,scale..
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| 2. |
- Abreu, P., et al.
(författare)
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Study of dimuon production in photon-photon collisions and measurement of QED photon structure functions at LEP
- 2001
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Ingår i: European Physical Journal C. - : Springer Science and Business Media LLC. - 1434-6044 .- 1434-6052. ; 19:1, s. 15-28
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Tidskriftsartikel (refereegranskat)abstract
- Muon pair production in the process e+e- → e+e- μ+μ- is studied using the data taken at LEP1 (√s ≃ mz) with the DELPHI detector during the years 1992-1995. The corresponding integrated luminosity is 138.5 pb-1. The QED predictions have been tested over the whole Q2 range accessible at LEP1 (from several GeV2/c4 to several hundred GeV2/c4) by comparing experimental distributions with distributions resulting from Monte Carlo simulations using various generators. Selected events are used to extract the leptonic photon structure function Fγ 2. Azimuthal correlations are used to obtain information on additional structure functions, Fγ A and Fγ B, which originate from interference terms of the scattering amplitudes. The measured ratios Fγ A/Fγ 2 and FγB/Fγ 2 are significantly different from zero and consistent with QED predictions.
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| 3. |
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| 4. |
- Högberg, Thomas, 1947-, et al.
(författare)
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Role of weekly paclitaxel in the treatment of advanced ovarian cancer
- 2002
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Ingår i: Critical reviews in oncology/hematology. - 1040-8428 .- 1879-0461. ; 44:SUPPL.
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Tidskriftsartikel (refereegranskat)abstract
- Dose-dense weekly administration of paclitaxel has the potential advantage of allowing a larger percentage of cancer cells to enter the vulnerable phase of their cell cycle when cytotoxic paclitaxel concentrations are present. The lower doses and shorter infusion times used with weekly dosing should also minimize bone marrow suppression and other toxicities associated with standard paclitaxel 3-weekly administration. Clinical studies have confirmed that paclitaxel can be safely delivered on a weekly schedule as a 1-h infusion to patients with advanced ovarian cancer. Weekly administration of paclitaxel also appears to be better tolerated than 3-weekly administration. Single-agent weekly paclitaxel is associated with response rates of 20-65%. Combination therapy with weekly paclitaxel has mainly involved carboplatin and response rates with such regimens range from 60-88%. Triple-drug combination therapy has produced response rates of 42-67.5%. Such therapy has included weekly paclitaxel in combination with carboplatin/cisplatin plus topotecan, and carboplatin plus doxorubicin. In an attempt to avoid problems with high corticosteroid doses, dexamethasone doses of 10 and 8 mg have been used successfully in premedication regimens for weekly paclitaxel in ovarian cancer. ⌐ 2002 Elsevier Science Ireland Ltd. All rights reserved.
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