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Rozprawy doktorskie na temat „Quark models”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 31 stycznia 2023

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1

Gomshi, Nobary M. A. "Heavy quark fragmentation models." Thesis, Durham University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328988.

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2

Wambach, Achim. "Consistent application of quark models to heavy flavour physics." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386750.

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3

Potter, Christopher Thomas. "A search for the rare decay B⁰ (arrow tau⁺ tau⁻) at the Babar experiment /." view abstract or download file of text, 2005. http://wwwlib.umi.com/cr/uoregon/fullcit?p3181121.

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Thesis (Ph. D.)--University of Oregon, 2005.<br>Typescript. Includes vita and abstract. Includes bibliographical references (leaves 219-223). Also available for download via the World Wide Web; free to University of Oregon users.

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4

Murphy, Philip. "Nonrelativistic quark model calculation of the K-P --> [Lambda gamma] and K-P --> [Sigma]0[gamma] branching ratios." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/30167.

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The radiative annihilation of K⁻p atoms to Λγ and ∑°γ is investigated using a non-relativistic harmonic oscillator quark model. A nonrelativistic reduction of the first order Feynman diagrams is performed to yield a gauge invariant interaction, which is sandwiched between three quark wave functions. Pseudoscalar and pseudovector coupling schemes are used for the strong vertex and the effects of SU(3)flavour breaking is explored. We obtain results which are in agreement with experiment for the ∑°γ but are somewhat high for the Λγ calculation.<br>Science, Faculty of<br>Physics and Astronomy, Dep

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5

Smith, Jason. "Quarks and antiquarks in nuclei /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/9750.

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6

Detmold, William. "Nonperturbative approaches to quantum chromodynamics." Title page, contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09PH/09phd4817.pdf.

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7

Makke, Nour. "Measurement of the polarization of strange quark in the nucleon and determination of quark fragmentation functions into hadrons." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00673486.

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Understanding the nucleon structure is currently one of the main challenges encountered in nuclear physics. The present work represents a contribution to the study of the nucleon structure and deals, in particular, with the study of the role of strange quarks in the nucleon. The latter can be investigated by determing the strange quark distribution in the nucleon as well as the contribution of the spins of strange quarks to the nucleon spin ($\Delta s$). This work first presents a measurement of $\Delta s$ performed via Deeply Inelastic Scattering of a muon beam off polarized proton and deuter

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8

Signal, Anthony Ian. "Deep inelastic scattering and bag model." Title page, abstract and contents only, 1988. http://web4.library.adelaide.edu.au/theses/09PH/09phs578.pdf.

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9

Irwin, Blake A. "Calculation of the meson decays of vector Œ vector + pseudoscalar using Q.C.D." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63992.

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10

Morales, Patrícia Soares [UNESP]. "Limite de acoplamento forte da QCD e a interação méson-méson." Universidade Estadual Paulista (UNESP), 2002. http://hdl.handle.net/11449/91868.

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Made available in DSpace on 2014-06-11T19:25:30Z (GMT). No. of bitstreams: 0 Previous issue date: 2002-03Bitstream added on 2014-06-13T19:26:30Z : No. of bitstreams: 1 morales_ps_me_ift.pdf: 900348 bytes, checksum: 11b8ab9b4c422ec3a42face91d5074e6 (MD5)<br>O mecanismo de rearranjo de tubos de fluxo predito no limite de acoplamento forte da formulação Hamiltoniana da QCD na rede foi implementado num modelo de quarks constituintes e suas consequências investigadas para o espalhamento méson-méson. O rearranjo de tubos de fluxo leva a efeitos similares aos tradicionais efeitos de troca de quarks

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11

Rasmussen, Rasmus Westphal. "Implications of physics beyond the Standard Model in the quark and lepton sectors." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19174.

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Das Standardmodell (SM) der Teilchenphysik hat sich in der Praxis als vielseitige Theorie bewährt, dennoch deuten nichtverschwindende Neutrinomassen, dunkle Materie und Baryonenasymmetrie auf Physik jenseits des SM (BSM) hin. Um also ein mit den Beobachtungen konsistentes Modell zu entwickeln, ist eine umfassendere Theorie nötig. Experimentell kann entweder in Abweichungen von den Vorhersagen des SM nach neuer Physik gesucht werden. So kann jedes BSM-Szenario getestet werden. In dieser Arbeit werden BSM-Szenarien im Quark- sowie im Leptonen-Sektor und deren phänomenologische Konsequenzen a

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12

Ashley, Jonathan D. "Investigations in non-perturbative QCD." Title page, abstract and table of contents only, 2004. http://hdl.handle.net/2440/37959.

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In this thesis we review two methods for studying the non-pertubative region of QCD: the effective field theory, chiral perturbation theory (χPT), and the cloudy bag model, a successful chiral quark model of hadron structure. We use information from both of these sources to construct a simple extrapolation formula in the pion mass, mπ, for the nucleon electromagnetic form factors, which combines the correct non-analytic chiral behaviour predicted by (χPT), with the correct large mπ behaviour. This formula is applied to recent quenched lattice QCD results to extrapolate to the physical regime.

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13

Uzzo, Michael. "Stability of quark-antiquark models of mesons: A study on the validity of the spectator, Dirac, and Salpeter equations." W&M ScholarWorks, 1998. https://scholarworks.wm.edu/etd/1539623942.

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Mesons are made of quark-antiquark pairs held together by the strong force. The one channel spectator, Dirac, and Salpeter equations can each be used to model this pairing. We look at cases where the relativistic kernel of these equations corresponds to a linear combination of scalar exchange and vector exchange. The vector exchange will be either the time-like component or the full four vector. The systems covered here are referred to as quasirelativistic, which means retardation, regularization, and form factors are not included. Since the model used in this paper describes mesons which cann

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14

Jezo, Tomas. "Z' and W' gauge bosons in SU(2)xSU(2)xU(1) models : Collider phenomenology at LO and NLO QCD." Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENY071/document.

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Les modèles SU(2)xSU(2)xU(1) représentent une étape intermédiaire motivée par l'unification des groupes de jauge du Modèle Standard (MS). Un groupe de jauge étendu, par rapport a celui du MS, implique l'existence de nouveaux bosons de jauge, neutres et charges. Ces bosons dénotés Z' et W' sont recherches activement au Large Hadron Collider (LHC). Sur la base d'une analyse globale récente des contraintes sur ces modèles, provenant des expériences a basse énergie et du LEP, nous effectuons une analyse numérique au Leading Order (LO) des différentes signatures au LHC. Nous montrons que les sectio

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15

Moch, Paul [Verfasser], Martin [Akademischer Betreuer] Beneke, and Andreas [Akademischer Betreuer] Weiler. "Loop-induced lepton and quark dipole transitions in Randall-Sundrum models / Paul Moch. Betreuer: Martin Beneke. Gutachter: Andreas Weiler ; Martin Beneke." München : Universitätsbibliothek der TU München, 2015. http://d-nb.info/1081768010/34.

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16

Carlucci, Maria Valentina Verfasser], Andrzej [Akademischer Betreuer] [Buras, and Wolfgang F. L. [Akademischer Betreuer] Hollik. "Quark-Flavour Phenomenology of Models with Extended Gauge Symmetries / Maria Valentina Carlucci. Gutachter: Andrzej Jerzy Buras ; Wolfgang F. L. Hollik. Betreuer: Andrzej Jerzy Buras." München : Universitätsbibliothek der TU München, 2013. http://d-nb.info/1037198530/34.

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17

Hazelton, William Donald. "Configuration mixing of quark states in nucleons and other baryons in the MIT bag model /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/9770.

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18

Michaud, Yonnel. "Etude phénoménologique de la réaction d'échange de charge (pi)-p -> (pi)[n à haute énergie]." Université Joseph Fourier (Grenoble), 1995. http://www.theses.fr/1995GRE10097.

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La presente these est consacree a l'etude de la reaction d'echange de charge pion negatif proton donne pion nul neutron. Cette reaction fait partie des processus quasi-elastiques, caracterises par de petits moments transferes, et donc non interpretables par la chromodynamique quantique. Le modele de glauber, utilise avec succes dans le cadre de la diffusion elastique, est exploite ici pour l'etude de la reaction d'echange de charge. Une interaction effective entre quarks, incluant un terme central et un terme spinorbite, est employee afin de rendre compte de l'echange du meson rho. Les resulta

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19

Mebarki, Noureddine. "Large [transverse momentum] direct photon production by [pion minus, pion plus], [proton and anti-proton] beams in perturbative quantum chromodynamics." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65946.

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20

Dagdeviren, Nuri Ruhi. "A quark model for nuclear matter." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/32565.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1985.<br>MICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE.<br>Vita.<br>Includes bibliographical references.<br>by Nuri Ruhi Dagdeviren.<br>Ph.D.

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21

Mehrban, Hossein. "Matter-antimatter asymmetry of b-quark and B-meson decays." Thesis, University of Bristol, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324379.

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22

Schweitzer, Peter. "Polarized quark and antiquark distribution functions of the nucleon in the chiral quark soliton model." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=96147923X.

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23

Traxler, Christoph. "Hadronisierung des Quark-Gluon-Plasmas im chromodielektrischen Modell." [S.l. : s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=956793452.

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24

Nguyen, Khang D. "Systematic approach to optimizing free parameters in the Goldstone-boson-exchange model of quark-quark interactions." Thesis, California State University, Long Beach, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1566292.

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<p> The set of parameters used in the Goldstone-boson-exchange (GBE) model of quark-quark interactions by a group from the University of Graz to calculate baryon energy spectra is not optimal. A systematic approach to optimize these free parameters for a greater collection of baryons than previously treated is presented here. The baryons considered possess a physical symmetry where their constituent quarks are either made of all identical quarks or just two identical quarks. In order to calculate the various energy states of these baryons, the Faddeev method is used under the premise that thre

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25

Ohlsson, Tommy. "Properties of baryons in the chiral quark model." Licentiate thesis, KTH, Fysik, 1997. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-756.

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In this thesis, several properties of baryons are studied using the chiral quark model. The chiral quark model is a theory which can be used to describe low energy phenomena of baryons. In Paper 1, the chiral quark model is studied using wave functions with configuration mixing. This study is motivated by the fact that the chiral quark model cannot otherwise break the Coleman–Glashow sum-rule for the magnetic moments of the octet baryons, which is xperimentally broken by about ten standard deviations. Configuration mixing with quark-diquark components is also able to reproduce the octet baryon

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26

McGovern, J. A. "Strange baryons in a chiral quark-meson model." Thesis, University of Manchester, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233064.

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27

Helminen, Christina. "Aspects of the quark model for the baryons." Helsinki : University of Helsinki, 2000. http://ethesis.helsinki.fi/julkaisut/mat/fysii/vk/helminen/.

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28

Geng, Chaqiang. "Composite models of quarks and leptons." Diss., Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/76097.

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We review the various constraints on composite models of quarks and leptons. Some dynamical mechanisms for chiral symmetry breaking in chiral preon models are discussed. We have constructed several "realistic candidate" chiral preon models satisfying complementarity between the Higgs and confining phases. The models predict three to four generations of ordinary quarks and leptons.<br>Ph. D.

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29

Veiga, J. S. "Propriedades da matéria nuclear em modelos de quarks constituintes /." São Paulo, 1996. http://hdl.handle.net/11449/132865.

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30

Milstead, David Anthony. "The production of neutral kaons and lambdas in deep inelastic scattering at H1 and an upper limit on the production cross-section of instantons." Thesis, University of Liverpool, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309902.

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31

Takan, Taylan. "Study Of The Heavy Quarkonia Spectra In The Quark Model." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614102/index.pdf.

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Conventional Heavy Quarkonium systems, Charmonium and Bottomonium, are believed to be composed of a heavy quark and anti-quark pair. These systems are investigated by dierent methods resulting from dierent approaches to Quantum Chromodynamics (QCD), such as Lattice QCD, Eective Theories and Sum Rules. In this thesis we study the spectrum of Charmonium and Bottomonium using a non-relativistic Quark Model. Assuming one gluon exchange for the short distances and a linear confining potential for long distances we derive Breit-Fermi interaction Hamiltonian and calculate the spectra arising from thi

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32

Elliott, Louie C. "Regular and Hybrid Mesons in a Non-RelativisticConstituent Quark Model." NCSU, 1998. http://www.lib.ncsu.edu/theses/available/etd-19980807-164043.

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<p>We investigate q-qbar and q-qbar-g mesons with regularand exotic quantum numbers in a non-relativisticconstituent quark model. Simple harmonic oscillator statesare used as radial wave functions, which allows for analyticmatrix elements. Employing a diagonalization withvariational approach, the resulting generalizedeigenvalue problem is solved for the meson bound states.With a minimal number of parameters, we are able to describe the non-exotic meson spectrum within a few percent.Predictions are also made for the masses of hybrid mesons,with the lowest lying 1-+ u-ubar-g mass of 1.26 MeV.<P>

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33

Moore, Liam Ronald. "Top quark physics in the Standard Model Effective Field Theory." Thesis, University of Glasgow, 2016. http://theses.gla.ac.uk/7841/.

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We explore some applications of the Standard Model (SM) Effective Field Theory (EFT) as a tool with which to describe generic nonresonant new physics (NP) at hadron colliders. A global fit of the dimension-six Wilson Coefficients relevant to top quark production is presented, utilizing diverse experimental datasets from both the Large Hadron Collider (LHC) Runs I and II and the TeVatron, with current results in good agreement with the SM. Machinery is developed to systematically treat redundancies between higher-dimensional operators in the automated model-building and phenomenology toolkit Fe

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34

Folador, Bruna Cesira. "Correções relativísticas ao modelo de quarks no espalhamento J/ψ-nucleon". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/117765.

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O Método do Grupo Ressonante (RGM) é um método utilizado no estudo da interação hádron-hádron, na qual não são desprezados os graus de liberdade internos destas partículas. Nesta dissertação estudaremos os efeitos associados `a interação entre um quark pesado Q com outro leve q no potencial de troca de um gluón chamado de One Gluon Exchange Potencial (OGEP), tradicionalmente obtido a partir de um potencial relativístico de interação do modelos de quarks, fazendo uma expansão em potências de momentos nos espinores constituintes (potencial de Fermi-Breit). Faremos uma aproximação semi-relativíst

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35

Schulze, Robert. "From hot lattice QCD to cold quark stars." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-65426.

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A thermodynamic model of the quark-gluon plasma using quasiparticle degrees of freedom based on the hard thermal loop self-energies is introduced. It provides a connection between an established phenomenological quasiparticle model – following from the former using a series of approximations – and QCD – from which the former is derived using the Cornwall-Jackiw-Tomboulis formalism and a special parametrization of the running coupling. Both models allow for an extrapolation of first-principle QCD results available at small chemical potentials using Monte-Carlo methods on the lattice to large ne

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36

Faustino, Sara Raquel Ferreira. "Gestão de talento no setor da saúde : proposta do modelo Quark." Master's thesis, Instituto Superior de Economia e Gestão, 2019. http://hdl.handle.net/10400.5/19039.

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Mestrado em Gestão de Recursos Humanos<br>O presente projeto tem como objetivo a criação de um modelo de Gestão de Talento (GT) numa empresa de outsourcing que desenvolve a sua atividade no setor da saúde. A elaboração deste projeto surge como resposta à necessidade estratégica da organização identificar e mapear talento, criar políticas de desenvolvimento e elaborar um plano de ação (PA) para os colaboradores. Em termos metodológicos, recorreu-se a uma abordagem qualitativa que consistiu em observação participante e entrevistas semi-diretivas e focus group. Para a identificação do talento foi

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37

Veiga, J. S. [UNESP]. "Propriedades da matéria nuclear em modelos de quarks constituintes." Universidade Estadual Paulista (UNESP), 1996. http://hdl.handle.net/11449/132865.

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38

Fukukawa, Kenji. "Nucleon-Deuteron Scattering Described by a Quark-Model Nonlocal Gaussian Potential." 京都大学 (Kyoto University), 2012. http://hdl.handle.net/2433/157771.

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39

Wunderlich, Falk. "Photoemissivity near a chiral critical point within the quark-meson model." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-233657.

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The interplay of thermodynamic properties of strongly interacting matter and its emission of photons is investigated. For this purpose the Lagrangian of the quark meson model (in the literature also dubbed "linear sigma model" or "linear sigma model with quarks") is extended by an electromagnetic sector. Based on this extended Lagrangian both the grand-canonical potential and the generating functional of correlation functions are calculated in a consistent manner. From the former, the phase structure and various thermodynamical properties are determined. Especially, the dependence of certain l

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40

Downum, Clark R. "Low Energy Nucleon-Nucleon Interactions from the Quark Model with Applications." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526559.

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41

Algarín, Fernando Enrique Serna [UNESP]. "Symmetry-preserving contact interaction model for hadron structure and quark matter." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/152474.

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Submitted by FERNANDO ENRIQUE SERNA ALGARÍN null (ferse1129@gmail.com) on 2018-01-10T21:52:53Z No. of bitstreams: 1 tese.pdf: 948147 bytes, checksum: 94d535ccc424f5f4201747cae4382d6a (MD5)<br>Approved for entry into archive by Hellen Sayuri Sato null (hellen@ift.unesp.br) on 2018-01-12T15:54:08Z (GMT) No. of bitstreams: 1 algarin_fcs_dr_ift.pdf: 948147 bytes, checksum: 94d535ccc424f5f4201747cae4382d6a (MD5)<br>Made available in DSpace on 2018-01-12T15:54:08Z (GMT). No. of bitstreams: 1 algarin_fcs_dr_ift.pdf: 948147 bytes, checksum: 94d535ccc424f5f4201747cae4382d6a (MD5) Previous issue

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42

Algarín, F. E. S. (Fernando Enrique Serna). "Symmetry-preserving contact interaction model for hadron structure and quark matter /." São Paulo, 2017. http://hdl.handle.net/11449/152474.

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Orientador: Gastão Inácio krein<br>Coorientador: Bruno El-Bennich<br>Banca: Lauro Tomio<br>Banca: Juan Pablo Carlomagno<br>Banca: Sidney dos Santos Avancini<br>Banca: Kazuo Tsushima<br>Resumo: Nesta tese empregamos um modelo de interação de contato que preserva simetrias para estudar estrututura hadrônica e matéria de quarks. A interação de contato é uma representação de kernels não perturbativos usados em equações de Dyson-Schwinger e Bethe-Salpeter da Cromodinâmica Quântica (QCD). A ideia básica do modelo está baseada num esquema de subtração que evita passos tradicionais no cálculo de de in

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43

Zhang, Zuman. "Open heavy-flavour measurements via muons in proton-proton and nucleus-nucleus collisions with the ALICE detector at the CERN-LHC." Thesis, Université Clermont Auvergne‎ (2017-2020), 2018. http://www.theses.fr/2018CLFAC077/document.

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Les collisions d'ions lourds ultra-relativistes ont pour objectif l'étude d'un état de matière en interaction forte dans des conditions extrêmes de densité d'énergie et température, le plasma de quarks et gluons (QGP). Les saveurs lourdes (charme et beauté) sont produites principalement lors de processus durs aux premiers instants de la collision et participent aux différentes étapes de la collision. Par conséquent, la mesure des saveurs lourdes ouvertes devrait permettre d'extraire des informations importantes concernant le système créé aux premiers instants de la collision. L'étude des colli

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44

Gomes, Rosana de Oliveira. "Transições de fase hádron-quark em estrelas de nêutrons." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/55416.

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Os recentes avanços no campo da física de altas energias têm possibilitado cada vez mais o estudo da matéria sob condições extremas. Nesse contexto, novos estados da matéria vêm sendo descobertos e especulados. Dentre esses estados hipotéticos da matéria, encontra-se o de quarks desconfinados quando em ambientes de altíssimas densidades e/ou temperaturas. O cenário de densidades extremas e baixas temperaturas é encontrado no interior de estrelas de nêutrons, fazendo destas verdadeiros laboratórios para o estudo da matéria nuclear. A proposta desse trabalho é estudar a transição de fase de desc

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Serenone, Willian Matioli. "Potencial de quarks pesados com input de teorias de gauge na rede." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-24092014-163411/.

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Nesta dissertação nós revisamos aspectos gerais de teorias de gauge, os princípios da formulação de rede da cromodinâmica quântica (QCD) e algumas propriedades de quarkônios pesados, i.e. estados ligados de um quark pesado e seu antiquark. Como um exemplo de simulações de Monte Carlo de modelos de rede, apresentamos aplicações nos casos do oscilador harmônico e teorias de gauge SU(2). Nós estudamos o efeito de incorporar o propagador de gluon de simulações na rede em um modelo de potencial para a descrição do quarkônio, no caso do botômomio e do charmônio. Nós usamos em ambos os casos uma abor

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Silva, António. "Form factors of the baryon octet in the chiral quark soliton model." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=972728074.

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Ossmann, Jens. "Angular momentum structure of the nucleon in the chiral quark soliton model." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=973438827.

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González, Patrick José [Verfasser]. "Top quark and higgs physics in standard model extensions / Patrick José González." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2012. http://d-nb.info/1025882466/34.

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Clague, David Edward. "Dynamical symmetry breaking by a top quark condensate in the standard model." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293372.

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Blundell, Harry G. (Harry Grahame) Carleton University Dissertation Physics. "Meson properties in the quark model; a look at some outstanding problems." Ottawa, 1996.

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