Collisions and Collaboration
Title | Collisions and Collaboration PDF eBook |
Author | Max Boisot |
Publisher | Oxford University Press |
Total Pages | 336 |
Release | 2011-07-28 |
Genre | Business & Economics |
ISBN | 0199567921 |
The Large Hadron Collider at CERN is the world's largest scientific experiment involving 3,000 scientists from 38 countries. Here a team of organization theorists collaborate with leading figures at CERN to understand how this project has been organized and what lessons can be learnt for the management of major projects and 'big science'.
Collisions and Collaboration
Title | Collisions and Collaboration PDF eBook |
Author | |
Publisher | |
Total Pages | 315 |
Release | 2011 |
Genre | Large Hadron Collider (France and Switzerland) |
ISBN | 9780191728945 |
The Large Hadron Collider at CERN is the world's largest scientific experiment involving 3000 scientists. Here a team of organisation theorists collaborate with leading figures at CERN to understand how this project has been organised and what lessons can be learnt for the management of major projects and 'big science'.--[Source inconnue].
Search for Supersymmetry in pp Collisions at √s = 8 TeV with a Photon, Lepton, and Missing Transverse Energy
Title | Search for Supersymmetry in pp Collisions at √s = 8 TeV with a Photon, Lepton, and Missing Transverse Energy PDF eBook |
Author | Yutaro Iiyama |
Publisher | Springer |
Total Pages | 174 |
Release | 2017-06-14 |
Genre | Science |
ISBN | 3319586610 |
This Ph.D. thesis is a search for physics beyond the standard model (SM) of particle physics, which successfully describes the interactions and properties of all known elementary particles. However, no particle exists in the SM that can account for the dark matter, which makes up about one quarter of the energy-mass content of the universe. Understanding the nature of dark matter is one goal of the CERN Large Hadron Collider (LHC). The extension of the SM with supersymmetry (SUSY) is considered a promising possibilities to explain dark matter. The nominated thesis describes a search for SUSY using data collected by the CMS experiment at the LHC. It utilizes a final state consisting of a photon, a lepton, and a large momentum imbalance probing a class of SUSY models that has not yet been studied extensively. The thesis stands out not only due to its content that is explained with clarity but also because the author performed more or less all aspects of the thesis analysis by himself, from data skimming to limit calculations, which is extremely rare, especially nowadays in the large LHC collaborations.
Jet Quenching in Relativistic Heavy Ion Collisions at the LHC
Title | Jet Quenching in Relativistic Heavy Ion Collisions at the LHC PDF eBook |
Author | Aaron Angerami |
Publisher | Springer Science & Business Media |
Total Pages | 169 |
Release | 2013-12-02 |
Genre | Science |
ISBN | 3319012193 |
This thesis presents the first measurements of jets in relativistic heavy ion collisions as reported by the ATLAS Collaboration. These include the first direct observation of jet quenching through the observation of a centrality-dependent dijet asymmetry. Also, a series of jet suppression measurements are presented, which provide quantitative constraints on theoretical models of jet quenching. These results follow a detailed introduction to heavy ion physics with emphasis on the phenomenon of jet quenching and a comprehensive description of the ATLAS detector and its capabilities with regard to performing these measurements.
Spin Correlations in tt Events from pp Collisions
Title | Spin Correlations in tt Events from pp Collisions PDF eBook |
Author | Boris Lemmer |
Publisher | Springer |
Total Pages | 233 |
Release | 2015-06-24 |
Genre | Science |
ISBN | 3319189328 |
This thesis introduces readers to the Standard Model, the top quark and its properties, before explaining the concept of spin correlation measurement. The first measurement of top quark spin correlations at the LHC in the lepton+jets decay channel is presented. As the heaviest elementary particle, the top quark plays an essential role in the Standard Model of elementary particle physics. In the case of top quarks being produced in pairs at hadron colliders, the Standard Model predicts their spins to be correlated. The degree of correlation depends on both the production mechanism and properties of the top quark. Any deviation from the Standard Model prediction can be an indicator for new physics phenomena. The thesis employs an advanced top quark reconstruction algorithm including dedicated identification of the up- and down-type quarks from the W boson decay.
Phenomenology of Ultra-Relativistic Heavy-Ion Collisions
Title | Phenomenology of Ultra-Relativistic Heavy-Ion Collisions PDF eBook |
Author | Wojciech Florkowski |
Publisher | World Scientific Publishing Company |
Total Pages | 436 |
Release | 2010-03-24 |
Genre | Science |
ISBN | 9813107596 |
This book gives an introduction to main ideas used in the physics of ultra-relativistic heavy-ion collisions. The links between basic theoretical concepts (discussed gradually from the elementary to more advanced level) and the results of experiments are outlined, so that experimentalists may learn more about the foundations of the models used by them to fit and interpret the data, while theoreticians may learn more about how different theoretical ideas are used in practical applications. The main task of the book is to collect the available information and establish a uniform picture of ultra-relativistic heavy-ion collisions. The properties of hot and dense matter implied by this picture are discussed comprehensively. In particular, the issues concerning the formation of the quark–gluon plasma in present and future heavy-ion experiments are addressed.
Search for New Physics in Mono-jet Final States in pp Collisions
Title | Search for New Physics in Mono-jet Final States in pp Collisions PDF eBook |
Author | Giuliano Gustavino |
Publisher | Springer |
Total Pages | 236 |
Release | 2017-06-19 |
Genre | Science |
ISBN | 3319588710 |
This thesis provides a detailed and comprehensive description of the search for New Physics at the Large Hadron Collider (LHC) in the mono-jet final state, using the first 3.2 fb-1 of data collected at the centre of mass energy of colliding protons of 13~TeV recorded in the ATLAS experiment at LHC. The results are interpreted as limits in different theoretical contexts such as compressed supersymmetric models, theories that foresee extra-spatial dimensions and in the dark matter scenario. In the latter the limits are then compared with those obtained by other ATLAS analyses and by experiments based on completely different experimental techniques, highlighting the role of the mono-jet results in the context of dark matter searches.Lastly, a set of possible analysis improvements are proposed to reduce the main uncertainties that affect the signal region and to increase the discovery potential by further exploiting the information on the final state.