Описание: This thesis presents the first measurement of charmed D0 meson production relative to the reaction plane in Pb–Pb collisions at the center-of-mass energy per nucleon-nucleon collision of ?sNN = 2.76 TeV. It also showcases the measurement of the D0 production in p–Pb collisions at ?sNN = 5.02 TeV with the ALICE detector at the CERN Large Hadron Collider. The measurement of the D0 azimuthal anisotropy with respect to the reaction plane indicates that low- momentum charm quarks participate in the collective expansion of the high-density, strongly interacting medium formed in ultra-relativistic heavy-ion collisions, despite their large mass. This behavior can be explained by charm hadronization via recombination with light quarks from the medium and collisional energy loss. The measurement of the D0 production in p–Pb collisions is crucial to separate the effect induced by cold nuclear matter from the final- state effects induced by the hot medium formed in Pb–Pb collisions. The D0 production in p–Pb collisions is consistent with the binary collision scaling of the production in pp collisions, demonstrating that the modification of the momentum distribution observed in Pb–Pb collisions with respect to pp is predominantly induced by final-state effects such as the charm energy loss.
Автор: Paolo Gunnellini Название: Study of Double Parton Scattering Using Four-Jet Scenarios ISBN: 3319370723 ISBN-13(EAN): 9783319370729 Издательство: Springer Рейтинг: Цена: 14365.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This thesis addresses in a very new and elegant way several measurements and the extraction of so-called double parton scattering. When the density of partons in the protons becomes large, there is a non-negligible probability that more than one parton participates in the interaction and the so-called double parton scattering becomes important.
Описание: This book mainly focuses on the study of photon + 3 jets final state in Proton-Proton Collisions at ГЇВїВЅ s = 7TeV, searching for patterns of two (or more) distinct hard scatterings in the same collision, i.e the so-called Double Parton Scattering (DPS).
Описание: Introduction.- The Standard Model.- Beyond the Standard Model.- The Dark Matter Paradigm.- Experimental Facilities.- Physics Objects.- The Mono-jet Analysis.- Mono-jet Versus All.- Mono-jet Analysis Improvements.- Conclusions.
Описание: This book mainly focuses on the study of photon + 3 jets final state in Proton-Proton Collisions at s = 7TeV, searching for patterns of two (or more) distinct hard scatterings in the same collision, i.e the so-called Double Parton Scattering (DPS).
Автор: Aaron Angerami Название: Jet Quenching in Relativistic Heavy Ion Collisions at the LHC ISBN: 3319347500 ISBN-13(EAN): 9783319347509 Издательство: Springer Рейтинг: Цена: 13059.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This thesis presents the first measurements of jets in relativistic heavy ion collisions as reported by the ATLAS Collaboration. Also, a series of jet suppression measurements are presented, which provide quantitative constraints on theoretical models of jet quenching.
Описание: This thesis, which won one of the six 2015 ATLAS Thesis Awards, concerns the study of the charmonium and bottomonium bound heavy quark bound states. The second part of the thesis presents measurements of the prompt and non-prompt production of the chi_c1 and chi_c2 charmonium states in proton-proton collisions.
Автор: Hamish Gordon Название: Searches for CP Violation in Charmed Meson Decays ISBN: 3319070665 ISBN-13(EAN): 9783319070667 Издательство: Springer Рейтинг: Цена: 15672.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Our current understanding of the fundamental building blocks of the Universe, summarised by the Standard Model of particle physics, is incomplete. To explain this asymmetry requires, among other effects, a mechanism known as charge-parity (CP) violation that causes differences between the rates at which particles and antiparticles decay.
This thesis presents the first experimental calibration of the top-quark Monte-Carlo mass. It also provides the top-quark mass-independent and most precise top-quark pair production cross-section measurement to date. The most precise measurements of the top-quark mass obtain the top-quark mass parameter (Monte-Carlo mass) used in simulations, which are partially based on heuristic models. Its interpretation in terms of mass parameters used in theoretical calculations, e.g. a running or a pole mass, has been a long-standing open problem with far-reaching implications beyond particle physics, even affecting conclusions on the stability of the vacuum state of our universe.
In this thesis, this problem is solved experimentally in three steps using data obtained with the compact muon solenoid (CMS) detector. The most precise top-quark pair production cross-section measurements to date are performed. The Monte-Carlo mass is determined and a new method for extracting the top-quark mass from theoretical calculations is presented. Lastly, the top-quark production cross-sections are obtained – for the first time – without residual dependence on the top-quark mass, are interpreted using theoretical calculations to determine the top-quark running- and pole mass with unprecedented precision, and are fully consistently compared with the simultaneously obtained top-quark Monte-Carlo mass.
Автор: Philip George Burke Название: R-Matrix Theory of Atomic Collisions ISBN: 3642267580 ISBN-13(EAN): 9783642267581 Издательство: Springer Рейтинг: Цена: 22201.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Starting with a self-contained overview of atomic collision theory, this monograph looks at recent developments in R-matrix theory and its applications to a range of atomic, molecular and optical processes, including electron and photon collisions with atoms.
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