| 1. |
- Aad, G., et al.
(author)
-
- 2012
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swepub:Mat__t (peer-reviewed)
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| 2. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 3. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 4. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 5. |
- Aad, G., et al.
(author)
-
- 2011
-
swepub:Mat__t (peer-reviewed)
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| 6. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 7. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 8. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 9. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 10. |
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- 2011
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swepub:Mat__t (peer-reviewed)
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| 11. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 12. |
- Aad, G., et al.
(author)
-
- 2011
-
swepub:Mat__t (peer-reviewed)
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| 13. |
- Aad, G., et al.
(author)
-
- 2011
-
swepub:Mat__t (peer-reviewed)
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| 14. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 15. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 16. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 17. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 18. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 19. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 20. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 21. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
|
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| 22. |
- Aad, G., et al.
(author)
-
- 2010
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swepub:Mat__t
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| 23. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 24. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 25. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 26. |
- Aad, G., et al.
(author)
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- 2011
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swepub:Mat__t (peer-reviewed)
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| 27. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 28. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t
|
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| 29. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 30. |
- Aad, G., et al.
(author)
-
- 2010
-
swepub:Mat__t (peer-reviewed)
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| 31. |
- Aad, G., et al.
(author)
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- 2011
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swepub:Mat__t (peer-reviewed)
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| 32. |
- Aad, G., et al.
(author)
-
- 2011
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swepub:Mat__t (peer-reviewed)
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| 33. |
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| 34. |
- Aad, G., et al.
(author)
-
- 2010
-
swepub:Mat__t
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| 35. |
- Aad, G., et al.
(author)
-
- 2011
-
swepub:Mat__t (peer-reviewed)
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| 36. |
- Aad, G., et al.
(author)
-
- 2010
-
swepub:Mat__t
|
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| 37. |
- Aad, G., et al.
(author)
-
- 2010
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swepub:Mat__t
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| 38. |
- Aad, G., et al.
(author)
-
- 2012
-
Journal article (peer-reviewed)
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| 39. |
- Schael, S, et al.
(author)
-
Precision electroweak measurements on the Z resonance
- 2006
-
In: Physics Reports. - : Elsevier BV. - 0370-1573 .- 1873-6270. ; 427:5-6, s. 257-454
-
Research review (peer-reviewed)abstract
- We report on the final electroweak measurements performed with data taken at the Z resonance by the experiments operating at the electron-positron colliders SLC and LEP. The data consist of 17 million Z decays accumulated by the ALEPH, DELPHI, L3 and OPAL experiments at LEP, and 600 thousand Z decays by the SLID experiment using a polarised beam at SLC. The measurements include cross-sections, forward-backward asymmetries and polarised asymmetries. The mass and width of the Z boson, m(Z) and Gamma(Z), and its couplings to fermions, for example the p parameter and the effective electroweak mixing angle for leptons, are precisely measured: m(Z) = 91.1875 +/- 0.0021 GeV, Gamma(Z) = 2.4952 +/- 0.0023 GeV, rho(l) = 1.0050 +/- 0.0010, sin(2)theta(eff)(lept) = 0.23153 +/- 0.00016. The number of light neutrino species is determined to be 2.9840 +/- 0.0082, in agreement with the three observed generations of fundamental fermions. The results are compared to the predictions of the Standard Model (SM). At the Z-pole, electroweak radiative corrections beyond the running of the QED and QCD coupling constants are observed with a significance of five standard deviations, and in agreement with the Standard Model. Of the many Z-pole measurements, the forward-backward asymmetry in b-quark production shows the largest difference with respect to its SM expectation, at the level of 2.8 standard deviations. Through radiative corrections evaluated in the framework of the Standard Model, the Z-pole data are also used to predict the mass of the top quark, m(t) = 173(+10)(+13) GeV, and the mass of the W boson, m(W) = 80.363 +/- 0.032 GeV. These indirect constraints are compared to the direct measurements, providing a stringent test of the SM. Using in addition the direct measurements of m(t) and m(W), the mass of the as yet unobserved SM Higgs boson is predicted with a relative uncertainty of about 50% and found to be less than 285 GeV at 95% confidence level. (c) 2006 Elsevier B.V. All rights reserved.
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| 40. |
- Abreu, P., et al.
(author)
-
Measurement of the gluon fragmentation function and a comparison of the scaling violation in gluon and quark jets
- 2000
-
In: European Physical Journal C. - : Springer Science and Business Media LLC. - 1434-6044 .- 1434-6052. ; 13:4, s. 573-589
-
Journal article (peer-reviewed)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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| 41. |
- Abreu, P., et al.
(author)
-
Study of dimuon production in photon-photon collisions and measurement of QED photon structure functions at LEP
- 2001
-
In: European Physical Journal C. - : Springer Science and Business Media LLC. - 1434-6044 .- 1434-6052. ; 19:1, s. 15-28
-
Journal article (peer-reviewed)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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| 42. |
- Abdallah, J., et al.
(author)
-
Mechanical construction and installation of the ATLAS tile calorimeter
- 2013
-
In: Journal of Instrumentation. - 1748-0221. ; 8, s. T11001-
-
Journal article (peer-reviewed)abstract
- This paper summarises the mechanical construction and installation of the Tile Calorimeter for the ATLAS experiment at the Large Hadron Collider in CERN, Switzerland. The Tile Calorimeter is a sampling calorimeter using scintillator as the sensitive detector and steel as the absorber and covers the central region of the ATLAS experiment up to pseudorapidities +/- 1.7. The mechanical construction of the Tile Calorimeter occurred over a period of about 10 years beginning in 1995 with the completion of the Technical Design Report and ending in 2006 with the installation of the final module in the ATLAS cavern. During this period approximately 2600 metric tons of steel were transformed into a laminated structure to form the absorber of the sampling calorimeter. Following instrumentation and testing, which is described elsewhere, the modules were installed in the ATLAS cavern with a remarkable accuracy for a structure of this size and weight.
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| 43. |
- Abdallah, J., et al.
(author)
-
The optical instrumentation of the ATLAS Tile Calorimeter
- 2013
-
In: Journal of Instrumentation. - 1748-0221. ; 8, s. P01005-
-
Journal article (peer-reviewed)abstract
- The Tile Calorimeter, covering the central region of the ATLAS experiment up to pseudorapidities of +/-1.7, is a sampling device built with scintillating tiles that alternate with iron plates. The light is collected in wave-length shifting (WLS) fibers and is read out with photomultipliers. In the characteristic geometry of this calorimeter the tiles lie in planes perpendicular to the beams, resulting in a very simple and modular mechanical and optical layout. This paper focuses on the procedures applied in the optical instrumentation of the calorimeter, which involved the assembly of about 460,000 scintillator tiles and 550,000 WLS fibers. The outcome is a hadronic calorimeter that meets the ATLAS performance requirements, as shown in this paper.
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| 44. |
- Kuhle, J., et al.
(author)
-
Conversion from clinically isolated syndrome to multiple sclerosis: A large multicentre study
- 2015
-
In: Multiple Sclerosis Journal. - : SAGE Publications. - 1352-4585 .- 1477-0970. ; 21:8, s. 1013-1024
-
Journal article (peer-reviewed)abstract
- Background and objective: We explored which clinical and biochemical variables predict conversion from clinically isolated syndrome (CIS) to clinically definite multiple sclerosis (CDMS) in a large international cohort. Methods: Thirty-three centres provided serum samples from 1047 CIS cases with at least two years' follow-up. Age, sex, clinical presentation, T2-hyperintense lesions, cerebrospinal fluid (CSF) oligoclonal bands (OCBs), CSF IgG index, CSF cell count, serum 25-hydroxyvitamin D3 (25-OH-D), cotinine and IgG titres against Epstein-Barr nuclear antigen 1 (EBNA-1) and cytomegalovirus were tested for association with risk of CDMS. Results: At median follow-up of 4.31 years, 623 CIS cases converted to CDMS. Predictors of conversion in multivariable analyses were OCB (HR = 2.18, 95% CI = 1.71-2.77, p < 0.001), number of T2 lesions (two to nine lesions vs 0/1 lesions: HR = 1.97, 95% CI = 1.52-2.55, p < 0.001; >9 lesions vs 0/1 lesions: HR = 2.74, 95% CI = 2.04-3.68, p < 0.001) and age at CIS (HR per year inversely increase = 0.98, 95% CI = 0.98-0.99, p < 0.001). Lower 25-OH-D levels were associated with CDMS in univariable analysis, but this was attenuated in the multivariable model. OCB positivity was associated with higher EBNA-1 IgG titres. Conclusions: We validated MRI lesion load, OCB and age at CIS as the strongest independent predictors of conversion to CDMS in this multicentre setting. A role for vitamin D is suggested but requires further investigation.
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| 45. |
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| 46. |
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