Institution
Brunel University London
Education•London, United Kingdom•
About: Brunel University London is a education organization based out in London, United Kingdom. It is known for research contribution in the topics: Large Hadron Collider & Population. The organization has 10918 authors who have published 29515 publications receiving 893330 citations. The organization is also known as: Brunel & University of Brunel.
Papers published on a yearly basis
Papers
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TL;DR: In this paper, a measurement of W and Z production cross sections in pp collisions at 7 TeV is presented, where electron and muon decay channels are analyzed in a data sample collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 36 inverse picobarns.
Abstract: A measurement of inclusive W and Z production cross sections in pp collisions at sqrt(s)=7 TeV is presented. The electron and muon decay channels are analyzed in a data sample collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 36 inverse picobarns. The measured inclusive cross sections are sigma(pp-> WX) B(W-> l nu) = 10.30 +/- 0.02 (stat.) +/- 0.10 (syst.) +/- 0.10 (th.) +/- 0.41 (lumi.) nb and sigma(pp -> ZX) B(Z-> l^+l^-) = 0.974 +/- 0.007 (stat.) +/- 0.007 (syst.) +/- 0.018 (th.) +/- 0.039 (lumi.) nb, limited to the dilepton invariant mass range 60 to 120 GeV. The luminosity-independent cross section ratios are [sigma(pp->WX) B(W-> l nu)]/[sigma(pp-> ZX) B(Z->l^+l^-)] = 10.54 +/- 0.07 (stat.) +/- 0.08 (syst.) +/- 0.16 (th.) and [sigma(pp->W^+X) B(W^+ -> l^+nu)] / [sigma(pp->W^- X) B(W^- -> l^- nu)] = 1.421 +/- 0.006 (stat.) +/- 0.014 (syst.) +/- 0.029 (th.). The measured values agree with next-to-next-to-leading order QCD cross section calculations based on recent parton distribution functions.
227 citations
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12 Apr 2012
TL;DR: In this article, a search for a Higgs boson decaying into two photons is described using a dataset recorded by the CMS experiment at the LHC from pp collisions at a centre-of-mass energy of 7 TeV, which corresponds to an integrated luminosity of 4.8 inverse femtobarns.
Abstract: A search for a Higgs boson decaying into two photons is described. The analysis is performed using a dataset recorded by the CMS experiment at the LHC from pp collisions at a centre-of-mass energy of 7 TeV, which corresponds to an integrated luminosity of 4.8 inverse femtobarns. Limits are set on the cross section of the standard model Higgs boson decaying to two photons. The expected exclusion limit at 95% confidence level is between 1.4 and 2.4 times the standard model cross section in the mass range between 110 and 150 GeV. The analysis of the data excludes, at 95% confidence level, the standard model Higgs boson decaying into two photons in the mass range 128 to 132 GeV. The largest excess of events above the expected standard model background is observed for a Higgs boson mass hypothesis of 124 GeV with a local significance of 3.1 sigma. The global significance of observing an excess with a local significance greater than 3.1 sigma anywhere in the search range 110-150 GeV is estimated to be 1.8 sigma. More data are required to ascertain the origin of this excess.
227 citations
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TL;DR: The features of a well designed case study are described and examples showing how qualitative methods are used in evaluations of health services and health policy are given.
Abstract: Case study evaluations, using one or more qualitative methods, have been used to investigate important practical and policy questions in health care This paper describes the features of a well designed case study and gives examples showing how qualitative methods are used in evaluations of health services and health policy
227 citations
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TL;DR: The compensation phenomenon in heterogeneous catalysis takes the form of a sympathetic linear correlation between the observed parameters of the Arrhenius equation E app and In A app for a series of related reactions or catalysts.
Abstract: The compensation phenomenon in heterogeneous catalysis takes the form of a sympathetic linear correlation between the observed parameters of the Arrhenius equation E app and In A app for a series of related reactions or catalysts: Exact obedience to this Cremer-Constable relation requires all Arrhenius plots in the set to intersect at the isokinetic temperature (Ti ). When this is established with statistical rigor (which is rare), the term “isokinetic relationship” (IKR) is used, the term “compensation” being reserved for cases in which this has not been done. Early work suggested that Ti equated to that at which the catalysts were prepared, but this observation has not been generally confirmed. Experimental error in the Arrhenius plots and other causes, such as a change in mechanism or the onset of diffusion limitation, can give rise to false “apparent” compensation which is of no real significance. The scope of this review is strictly limited to heterogeneously catalyzed reactions; thermal desorption i...
226 citations
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TL;DR: In this paper, the fraction of atoms at the surface of small metal particles increases as their size diminishes in the range 10 to 2 nm, and it is shown that certain classes of reaction may be designated as "structure-insensitive" in that their rates depend only minimally on particle size.
226 citations
Authors
Showing all 11074 results
Name | H-index | Papers | Citations |
---|---|---|---|
Yang Yang | 171 | 2644 | 153049 |
Hongfang Liu | 166 | 2356 | 156290 |
Gavin Davies | 159 | 2036 | 149835 |
Marjo-Riitta Järvelin | 156 | 923 | 100939 |
Matt J. Jarvis | 144 | 1064 | 85559 |
Alexander Belyaev | 142 | 1895 | 100796 |
Louis Lyons | 138 | 1747 | 98864 |
Silvano Tosi | 135 | 1712 | 97559 |
John A Coughlan | 135 | 1312 | 96578 |
Kenichi Hatakeyama | 134 | 1731 | 102438 |
Kristian Harder | 134 | 1613 | 96571 |
Peter R Hobson | 133 | 1590 | 94257 |
Christopher Seez | 132 | 1256 | 89943 |
Liliana Teodorescu | 132 | 1471 | 90106 |
Umesh Joshi | 131 | 1249 | 90323 |