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Dissertations / Theses on the topic 'Form factors'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Murphy, Kellen J. "Evaluating the Electromagnetic Form Factors of Light Nuclei." Ohio University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1313510475.

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2

Gurdogan, Omer Can. "Form factors in superconformal theories in four and three dimensions." Thesis, Queen Mary, University of London, 2014. http://qmro.qmul.ac.uk/xmlui/handle/123456789/8190.

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This thesis focuses on form factors in superconformal theories, in particular maximally supersymmetric Yang-Mills (MSYM) and ABJM. Scattering amplitudes in these theories have a wealth of special properties and significant amount of insight has been developed for these along with the modern techniques to calculate them. In this thesis, it is presented that form factors have very similar properties to scattering amplitudes and the techniques for scattering amplitudes can be successfully applied to form factors. After a review of the methods employed, the results for tree-level and multi-loop fo

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3

Rimal, Dipak. "PROTON FORM FACTOR PUZZLE AND THE CEBAF LARGE ACCEPTANCE SPECTROMETER (CLAS) TWO-PHOTON EXCHANGE EXPERIMENT." FIU Digital Commons, 2014. http://digitalcommons.fiu.edu/etd/1211.

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4

Thapedi, Teboho L. "Proton form factors in large NcQCD." Master's thesis, University of Cape Town, 2004. http://hdl.handle.net/11427/6517.

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Includes bibliographical references (leaves 25-26).<br>The proton electromagnetic form factors are obtained using a particular model formula of QCDoo , QCD in the large Nc limit, which sums up the infinite number of zero-width resonances to produce an Euler's Beta function, Dual-QCDoo . The form factors F} (q2), F2(q2) and GM(q2) altogether consistently agree well with reanalyzed space-like data in the whole range of momentum transfer. Additionally, the ratio upGE/GM predictably is in good agreement with recent polarization transfer measurements at Jefferson Lab. The electric and magnetic radi

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5

Vitos, Timea. "Electromagnetic form factors of the Sigma*-Lambda transition." Thesis, Uppsala universitet, Kärnfysik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-392236.

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We introduce and examine the analytic properties of the three electromagnetic transition form factors of the Sigma*-Lambda hyperon transition. In the first part of the thesis, we discuss the interaction Lagrangian for the hyperons at hand. We calculate the decay rate of the Dalitz decay Sigma* Lambda -> e+e- in the one-photon approximation in terms of the form factors, as well as the differential cross section of the scattering e+e- -> Sigma*bar Lambda in the one-photon approximation. In the second part of the thesis, we build up the machinery for calculation of the form factors using d

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6

Jones, Martyna Maria. "Form factors and scattering amplitudes in supersymmetric gauge theories." Thesis, Queen Mary, University of London, 2018. http://qmro.qmul.ac.uk/xmlui/handle/123456789/53582.

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The study of scattering amplitudes in the maximally supersymmetric Yang-Mills theory (N = 4 SYM) is a thriving field of research. Since the reformulation of perturbative gauge theory as a twistor string theory by Witten, this area has witnessed a flurry of activity, leading to the discovery of a multitude of novel techniques, such as recursion relations and MHV diagrams, collectively referred to as on-shell methods. In parallel, many previously hidden properties and rich mathematical structures have been found, a powerful example of such being the dual superconformal symmetry. It is natural to

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7

Bahr, Felix Tobias. "Form factors for semileptonic Bs → Kℓνdecays in lattice QCD". Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2015. http://dx.doi.org/10.18452/17384.

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Wir präsentieren eine Forschungsstudie zur Berechnung des Formfaktors f_+(q^2) für den semileptonischen Zerfall B_s -> K l nu in Gitter-QCD-Simulationen im großen Volumen mit zwei dynamischen Seequark-Flavours mit O(a)-verbesserten Wilson-Fermionen. Wir diskutieren die Berechnung relevanter Zwei- und Dreipunkt-Funktionen und betrachten komplementäre Methoden diese zu kombinieren, um den Formfaktor zu erhalten. Insbesondere stellen wir die Strategie eines kombinierten Fits vor, in den Datenpunkte aller Korrelatoren eingehen und der als Fitparameter Energien, Amplituden und den Formfaktor hat.

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8

Engström, Per-Olov. "Form factors of ω → µ+µ−π0 and ρ → µ+µ− and the dimuon spectrum from NA60". Thesis, Uppsala universitet, Kärnfysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-227311.

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Dimuon yields of the decays η → µ + µ − γ, ω → µ + µ − π 0 and ρ → µ + µ − withcalculated form factors by Terschlüsen and Leupold (2010) and Schneider etal. (2012) were numerically fitted to NA60 data and compared to the resultby Arnaldi et al. (2009). The calculated form factors are theoretically moresound and are an alternative to the previously used pole approximation. Inaddition, the ρ production temperature was reviewed theoretically usingthe ratio of η and ω yields. Several fits were made and the best results wereachieved by using Terschlüsen’s form factor for the ω decay and Schneider’s

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9

Gulez, Emel. "B meson semileptonic form factors using unquenched lattice QCD." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1155239314.

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10

Sufian, Raza Sabbir. "DISCONNECTED-SEA QUARKS CONTRIBUTION TO NUCLEON ELECTROMAGNETIC FORM FACTORS." UKnowledge, 2017. http://uknowledge.uky.edu/physastron_etds/49.

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We present comprehensive analysis of the light and strange disconnected-sea quarks contribution to the nucleon electric and magnetic form factors. The lattice QCD estimates of strange quark magnetic moment GsM (0) = −0.064(14)(09) μN and the mean squared charge radius ⟨r2s⟩E = −0.0043(16)(14) fm2 are more precise than any existing experimental measurements and other lattice calculations. The lattice QCD calculation includes ensembles across several lattice volumes and lattice spacings with one of the ensembles at the physical pion mass. We have performed a simultaneous chiral, infinite volume,

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11

Gayou, Olivier. "Proton form factors : measurement of the proton form factors ratio µP GEp/GMp to Q2 = 5.6 GeV2 by recoil polarimetry." Clermont-Ferrand 2, 2002. http://www.theses.fr/2002CLF22343.

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Dans cette thèse sont présentés les résultats de l'expérience E99-007, qui a mesuré le rapport des facteurs de forme électrique et magnétique du proton, jusqu'au quadri-moment de transfert Q2 = 5. 6 GeV2, par polarisation de recul. Les données ont été prises en 2000 au Thomas Jefferson National Accelerator Facility en Virginie (USA). Un faisceau d'électrons polarisés de 4. 6 Gev a été diffusé sur une cible d'hydrogène liquide. La polarisation du proton de recul était mesurée dans le Polarimètre du Plan Focal, situé à l'extrémité de l'un des deux Spectromètres à Haute Résolution du Hall A. Le r

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12

Gayou, Olivier. "Proton form factors: Measurement of the proton form factors ratio up to Q(2) = 5.6 GEV(2) by recoil polarimetry." W&M ScholarWorks, 2002. https://scholarworks.wm.edu/etd/1539623396.

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In this thesis, we present the results of the experiment E99-007, which measured the ratio of the electric to magnetic form factors of the proton to the four momentum transfer square Q2 = 5.6 GeV2, by recoil polarimetry. Data were taken in 2000 at the Thomas Jefferson National Accelerator Facility in Virginia, USA. A 4.6 GeV polarized electron beam was scattered off a cryogenic hydrogen target. The polarization of the recoil proton was measured in the Focal Plane Polarimeter, located after one of the two High Resolution Spectrometers in the hall. The ratio of the transverse to longitudinal com

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13

Takeyama, Yoshihiro. "Form factors of SU(N) invariant Thirring model." 京都大学 (Kyoto University), 2002. http://hdl.handle.net/2433/149952.

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14

Delfino, Gesualdo. "Form Factors in Two-Dimensional Quantum Field Theory." Doctoral thesis, SISSA, 1994. http://hdl.handle.net/20.500.11767/4487.

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15

Robards, Simon William Mechanical &amp Manufacturing Engineering Faculty of Engineering UNSW. "The hydrodynamics of high-speed transom-stern vessels." Publisher:University of New South Wales. Mechanical & Manufacturing Engineering, 2008. http://handle.unsw.edu.au/1959.4/42782.

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In the design of all marine craft the prediction of a vessel??s resistance characteristics is a major consideration. The accurate prediction of resistance is particularly important in the design of modern high-speed vessels where the primary contractual obligation placed upon the builder is the vessel??s achievable speed. Investigation was made of the methods of Doctors and Day, whereby the traditional Michell wave-resistance theory, published in 1898, is improved on through a better understanding of the hydrodynamics of transom sterns and the application of statistically determined form facto

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16

Gayou, Olivier. "Proton form factors : measurement of the proton form factors ratio mu_pG_Ep/G_Mp to Q^2 = 5.6 GeV^2 by recoil polarimetry." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2002. http://tel.archives-ouvertes.fr/tel-00001674.

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Dans cette thèse sont présentés les résultats de l'expérience E99-007, qui a mesuré le rapport des facteurs de forme électrique et magnétique du proton, jusqu'au quadri-moment de transfert Q2 = 5.6 GeV2, par polarisation de recul. Les données ont été prises en 2000 au Thomas Jefferson National Accelerator Facility en Virginie, Etats-Unis. Un faisceau d'électrons polarisés de 4.6 GeV a été diffusé sur une cible d'hydrogène liquide. La polarisation du proton de recul était mesurée dans le Polarimètre du Plan Focal, situé à l'extrémité de l'un des deux Spectromètres à Haute Résolution du Hall A.

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17

Elghazali, Burhan. "Urban Intensification in Metropolitan Khartoum : Influential Factors, Benefits and Applicability." Doctoral thesis, KTH, School of Architecture and the Built Environment (ABE), 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4040.

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<p>This dissertation explores the theoretical and methodological implications involved in the policy framework needed to intensify urban residential areas in a developing country. Metropolitan Khartoum, Sudan, has been chosen as a case study. The aim of the study is to further our understanding of the implications of transforming a sprawling city form to an intensified form. The objectives are: to identify the factors that have shaped Sudanese urban form in general and Metropolitan Khartoum in specific; to identify the policies that can intensify the urban residential neighborhoods in Metropol

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18

Belushkin, Maxim. "Dispersion theoretical analysis of the nucleon electromagnetic form factors." [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=984865993.

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19

Willetts, Jennifer. "Approaches to form-factors of higher spin Heisenberg chains." Thesis, Heriot-Watt University, 2016. http://hdl.handle.net/10399/3114.

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In this thesis we apply the vertex operator approach of Jimbo and Miwa to higher spin Heisenberg chains with the aim of computing the form-factors of these quantum integrable models. The work is motivated by the relation of the form-factors to the dynamical structure factors of the model - objects that are experimentally realisable - and potential for comparison with real-world results. Using a one boson, one fermion free field realisation of Uq(sl2), in conjunction with a realisation for the fermionic contribution due to Shiraishi, we are able to give the formalism required to obtain explicit

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20

MASCOLO, MATTEO. "π⁰ transition form factors at KLOE and KLOE-2". Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2012. http://hdl.handle.net/2108/202205.

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The main subject of this thesis work is the measurement of the π0 transition form factors at KLOE and KLOE-2 experiments. This topic, strongly encouraged by the community of theorists, is of crucial importance in diﬀerent ﬁelds of particle physics, such as the Standard Model prediction of the anomalous magnetic moment of the muon and the search for quark-gluon plasma in heavy-ion collisions. A ﬁrst part of the thesis work is devoted to the analysis of the KLOE old data set, looking for the rare OZI-suppressed φ → π0e+e− decay. Beside the measurement of the Branching Ratio of the process, the

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21

Le, Bohec Mickaël. "Contribution du rayonnement au confort thermique et aux économies d'énergie dans l'habitat." Thesis, Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2017. http://www.theses.fr/2017ESMA0029/document.

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Pour réduire la consommation énergétique des bâtiments, les systèmes de chauffage agissant par rayonnement semblent particulièrement intéressants puisqu'ils ne nécessitent pas de chauffer l'air de la pièce pour que leur action soit perçue (moins d'énergie dépensée et moins de déperditions) et qu'jls permettent une meilleure réactivité au mode de vie des utilisateurs. De plus, des expériences réalisées au MIT ont montré que nous préférons un air frais et des murs chauds plutôt que le contraire, ce qui milite en paveur du chauffage par rayonnement. L'objectif de ce travail est de développer un o

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22

Lee, Jae Choon. "The Effects of Urban Form on Vehicle Emissions - Focusing On Urban Form Factors and Three Conventional Air Pollutions and Carbon Dioxide -." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1354657016.

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23

Paulus, Timo. "Soft diffractive high energy scattering and form factors in nonperturbative QCD." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=966005023.

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24

Sanchez-Puertas, Pablo [Verfasser]. "A theoretical study of meson transition form factors / Pablo Sanchez-Puertas." Mainz : Universitätsbibliothek Mainz, 2016. http://d-nb.info/1121819184/34.

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25

Ikizlerli, Nehir. "Quark and gluon form factors at three loops in perturbative QCD." Thesis, Durham University, 2009. http://etheses.dur.ac.uk/118/.

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We compute the quark and gluon form factors at up to three-loop order within massless perturbative Quantum Chromodynamics by studying the photon-quark-anti-quark vertex and the effective vertex of a Higgs boson and two gluons. We use Feynman diagram methods to derive expressions for the form-factors in terms of tensor loop integrals in $D=4-2\epsilon$ dimensions. We review various methods for relating tensor integrals to a basis set of master integrals and utilize the FIRE package based on Integration-By-Parts to perform the reduction, thereby enabling the form factors to be expressed (in $D$-

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26

Green, Jeremy, Nesreen Hasan, Stefan Meinel, et al. "Up, down, and strange nucleon axial form factors from lattice QCD." AMER PHYSICAL SOC, 2017. http://hdl.handle.net/10150/624681.

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We report a calculation of the nucleon axial form factors G(A)(q)(Q(2)) and G(A)(q)(Q(2)) for all three light quark flavors q is an element of{u, d, s} in the range 0 <= Q(2) less than or similar to 1.2 GeV2 using lattice QCD. This work was done using a single ensemble with pion mass 317 MeVand made use of the hierarchical probing technique to efficiently evaluate the required disconnected loops. We perform nonperturbative renormalization of the axial current, including a nonperturbative treatment of the mixing between light and strange currents due to the singlet-nonsinglet difference caused

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27

Barnett, Michael A. "Weak electron scattering for the 3He-3H transition and the weak nuclear form factors." FIU Digital Commons, 1995. http://digitalcommons.fiu.edu/etd/1398.

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We calculate the differential cross section for weak electron scattering reaction, e + 3He-' 3H + ve, for energies from 100 MeV to 6 GeV as a function of outgoing nucleus angle from 0 to n/2 radians. We find that the differential cross section at low [q2] increases with electron energy from 0.1 GeV to 6.0 GeV, such that the peak value at 6.0 GeV is approximately 3.2 x 10-40 cm 2 / ster, a factor of 10 larger than the peak value at 0.1 GeV. We also find that the width of the peak falls very rapidly with increasing electron energy. At high [q2] we find that the differential cross section falls b

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28

Bharucha, Aoife Katy Manek. "B → K∗µ+µ− and form factors for semi-leptonic and radiative B decays." Thesis, Durham University, 2010. http://etheses.dur.ac.uk/486/.

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The hadronic environment of the LHC favours the study of exclusive modes, and of these semi-leptonic and radiative B decays will play a leading role in the search for new physics (NP). A prime example is the rare decay B→K∗(→ Kπ)µ+µ−, where the many measurable quantities offer important new tests of the Standard Model and its extensions. We deﬁne sets of CP-conserving and CP-violating observables which are studied in terms of the full form factors, calculated in QCD sum rules on the light-cone (LCSR), and QCD factorisation. Those with reduced dependence on hadronic quantities and sensitivity t

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29

Lolli, Linda. "Prolegomena for a comparative study of correlation functions in 2D integrable field theories." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18144/.

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Questo lavoro di tesi si concentra sulla teoria dei Form Factors di operatori locali in due dimensioni. Si espone innanzitutto la teoria dello scattering fattorizzato, propria dei sistemi integrabili, per poi trattare sia classicamente che quantisticamente due modelli integrabili massivi, Sine-Gordon e Sinh-Gordon. Viene esposta l'algebra di Faddeev-Zamolodchikov, per mezzo di cui è possibile trovare lo spazio di Hilbert per modelli integrabili come spazio delle sue rappresentazioni. L'attenzione è infine posta sul regime in cui l'ampiezza relativa alla riflessione solitone-antisolitone nella

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30

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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31

Knödlseder, Michael [Verfasser], and Vladimir [Akademischer Betreuer] Braun. "Nucleon electromagnetic form factors in perturbative QCD / Michael Knödlseder. Betreuer: Vladimir Braun." Regensburg : Universitätsbibliothek Regensburg, 2015. http://d-nb.info/1075050324/34.

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32

Poor, Jennifer L. "Nucleon axial vector form factors and electromagnetic transition amplitudes in perturbative QCD." W&M ScholarWorks, 1991. https://scholarworks.wm.edu/etd/1539623800.

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Values for the normal isovector axial vector form factor g$\sb{\rm A}$(Q$\sp2$) are calculated from the leading order perturbative QCD hard scattering amplitude and some previously reported models for the nucleon distribution amplitude, some of which have been derived from QCD sum rules. The values obtained from each of the distribution amplitudes gives a result that is consistent with the data extrapolated to high momentum transfer. The axial vector form factor is around one and one half times the proton's magnetic form factor in all the models which is also in accord with the data. We also c

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33

Barcus, Scott Kevin. "Extraction and Parametrization of Isobaric Trinucleon Elastic Cross Sections and Form Factors." W&M ScholarWorks, 2019. https://scholarworks.wm.edu/etd/1563898943.

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By mining data from Jefferson Lab Hall A experiment E08-014 a new measurement of the 3He elastic cross section at Q^2 ≈ 34 fm^−2 was extracted from a large quasielastic background. This new data point falls approximately halfway between the first and second diffractive minima of the 3He form factors. When combined with recent high Q^2 3He elastic cross section measurements from JLab this new point improves our knowledge of the cross section and form factors at large momentum transfers. The new high Q^2 data motivate a reanalysis of the 3He elastic cross section world data and promise an improv

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34

Montané, March M. Amor. "Terminologia i implantació : anàlisi d'alguns factors que influencien l'ús dels termes normalitzats de la informàtica i les TIC en llengua catalana." Doctoral thesis, Universitat Pompeu Fabra, 2012. http://hdl.handle.net/10803/97295.

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En aquesta tesi es duu a terme una anàlisi de la implantació de la terminologia en l’ús amb l’objectiu de trobar les causes que expliquen l’èxit o el fracàs de les propostes denominatives. Partim de la premissa que existeix un conjunt de factors que influencien positivament o negativament la implantació terminològica. En aquest treball estudiem la implantació en l’ús de la terminologia normalitzada de l’àmbit de la informàtica i les tecnologies de la informació i la comunicació (TIC) en un corpus especialitzat. Establim una metodologia de treball que ens permet d’obtenir dades quantitatives i

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35

Chesteen, Donna Marie. "Experimenting with the finite element method in the calculation of radiosity form factors." Master's thesis, University of Central Florida, 1995. http://digital.library.ucf.edu/cdm/ref/collection/RTD/id/22984.

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University of Central Florida College of Arts and Sciences Thesis<br>Radiosity has been used to create some of the most photorealistic computer-generated images to date. The problem, however, is that radiosity algorithms are so computationally and memory expensive that few applications can employ them successfully. Form factor calculation is the most costly part of the process. This report describes an algorithm for using the finite element method to reduce the amount of time that is used in the form factor calculation portion of the radiosity algorithm. This technique for form factor clac

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36

Schneider, Sebastian [Verfasser]. "Analysis tools for precision studies of hadronic three-body decays and transition form factors / Sebastian Schneider." Bonn : Universitäts- und Landesbibliothek Bonn, 2013. http://d-nb.info/1044868813/34.

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37

Zarnauskas, Gabriel Rocha de Santana. "Determinação de alguns parâmetros da teoria de perturbação quiral." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-10012011-175739/.

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A teoria de perturba ca o quiral (ChPT) e aceita, atualmente, como a teoria efetiva da cromodinamica quantica (QCD) para baixas energias. Ela foi colocada na sua versa o moderna com os artigos de Gasser e Leutwyler, na primeira metade da d ecada de 80 e, durante os 25 anos que se seguiram, ocorreu um aumento considera vel da variedade de fenomenos por ela descritos, sempre acompanhando a precisa o cres- cente dos resultados experimentais. Os trabalhos que apresentamos nesta tese de doutorado se inserem neste contexto e envolvem duas partes, ambas relacionadas a` determina c ao de alguns dos p

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38

Hanyok, Lauren Watson. "Methods for Calculating Motion Induced Interruptions as Applied to a Space Capsule After Splashdown." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/19252.

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The introduction of calculation methods for motion induced interruptions (MII) in 1984<br />introduced a new way to quantify human factors in addition to the motion sickness index<br />(MSI). The 1990 Graham method for calculating MII uses a combination of a vessel\'s<br />acceleration and roll to determine a tipping" factor to calculate MII per minute. The<br />Applebee-Baitis (AB) method considered that the motions are implicitly considered in accelerations, and therefore did not require roll to calculate MII. This thesis examines and<br />analyzes the di"erences between the AB and Graham me

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39

Jones, Gareth W. "Meson distribution amplitudes : applications to weak radiative B decays and в transition form factors". Thesis, Durham University, 2007. http://etheses.dur.ac.uk/2926/.

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This thesis examines the applications and determinations of meson light-cone distribution amplitudes, which enter the theoretical description of exclusive processes at large moment urn transfer. The investigation of such processes, in the context of в physics, provides one with a rich and extensive way of determining the Standard Model parameters of the CKM matrix, which are essential in describing CP violation, and searching for tell-tale signs of new physics beyond the Standard Model. We investigate the twist-2 and twist-3 distribution amplitudes of vector mesons and fully examine SU(3)(_F)-

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40

Al-Shamali, Mansour. "Weak form efficiency and factors leading to market efficiency in the Kuwait stock market." Thesis, Loughborough University, 1989. https://dspace.lboro.ac.uk/2134/6735.

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A small stock market may be less efficient in the weak sense than a large one, because it is often less elaborately organised technically. Hence, information about stock price formation may spread only gradually through the financial community. Consequontly, stock prices may display e greeter degree of nonrandomness because traders are unable to eliminate this. The objective of the study is to test the weak form efficiency in Kuwait Stock Exchange, a segment of the Kuwait Long Term capital market. In addition, the study explores the impact of several. factors on market efficiency. In Chapter O

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41

Pedroso, de Lima Hugo. "Lattice QCD calculations of Kl3 and pion form factors using partially twisted boundary conditions." Thesis, University of Southampton, 2011. https://eprints.soton.ac.uk/205469/.

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This thesis presents results of lattice QCD computations of the K → π semi-leptonic (Kl3) and pion electromagnetic form factors using partially twisted boundary conditions. These form factors parameterize low-energynon-perturbative strong interaction effects and cannot therefore be calculated in perturbative QCD. The pion electromagnetic form factor provides information on its charge distribution. The Kl3 form factor at zero momentum transfer (q2 = 0) can be used in the determination of the |Vus| element of the CKM matrix. An accurate determination of these form factors is therefore important.

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42

Koster, Laura Rijkje Anne. "Form factors and correlation functions in N=4 super Yang-Mills theory from twistor space." Doctoral thesis, Humboldt-Universität zu Berlin, 2017. http://dx.doi.org/10.18452/18057.

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Das Standardmodell der Teilchenphysik hat sich bis heute, mit Ausnahme der allgemeinen Relativitätstheorie, als erfolgreichste Theorie zur Beschreibung der Natur erwiesen. Störungstheoretische Rechnungen für bestimmte Mengen in Quantenchromodynamik (QCD) haben bisher unerreicht präzise Vorraussagen ermöglicht, die experimentell nachgewiesen wurden. Trotz dieser Erfolge gibt es Teile des Standardmodells und Energieskalen bei denen die Störungstheorie versagt und man nach Alternativen suchen muss. Vieles können wir hierbei verstehen, indem wir eine ähnliche Theorie untersuchen, die sogenannte pl

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43

Emmerich, Maximilian [Verfasser], та Andreas [Akademischer Betreuer] Schäfer. "Decay Form factors for Λb,c and B with QCD sum rules / Maximilian Emmerich ; Betreuer: Andreas Schäfer". Regensburg : Universitätsbibliothek Regensburg, 2018. http://d-nb.info/1166950751/34.

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Donolato, Enrica. "Personal resources versus risk factors: From academic achievement to anxiety forms." Doctoral thesis, Università degli studi di Padova, 2018. http://hdl.handle.net/11577/3424920.

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Learning in the school context involves strong social and emotional components that have a role in academic achievement and children development (Zins, Weissberg, Wang, & Walberg, 2007). Among individual factors that prevent or promote school success and emotional well-being at school, different risk factors and personal resources have been considered in the literature. The aim of the present dissertation is to consider the joint role of negative affect, anxiety forms and personal resources related to self-concept and resilience once the effect of cognitive abilities (i.e., working memory or

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Weil, Esther [Verfasser]. "Meson transition form factors and electromagnetic decays in the Dyson-Schwinger-approach / Esther Danielle Weil." Gießen : Universitätsbibliothek, 2020. http://d-nb.info/1210444658/34.

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Weil, Esther Danielle [Verfasser]. "Meson transition form factors and electromagnetic decays in the Dyson-Schwinger-approach / Esther Danielle Weil." Gießen : Universitätsbibliothek, 2020. http://d-nb.info/1210444658/34.

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Tonguc, Baris Tamer Souder Paul A. "A measurement of parity-violating asymmetry with polarized electrons scattered from protons and implications for strange form factors." Related Electronic Resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2003. http://wwwlib.umi.com/cr/syr/main.

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Oliveira, Orlando Olavo Aragao Aleixo Nerves de. "Mass spectrum and form factors for heavy baryons and a study of stochastic gauge fixing in lattice QCD." Thesis, University of Edinburgh, 1996. http://hdl.handle.net/1842/12727.

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In this thesis we study two aspects of the lattice formulation of Quantum Chromodynamics (QCD). We first describe the study of baryons with one heavy and two light quarks. We compute the full spectrum for the ground state of the channels with quantum numbers <I>J<SUP>P</SUP></I> = <SUP>1</SUP>/<SUB>2</SUB> <SUP>+</SUP>, <SUP>3</SUP>/<SUB>2</SUB><SUP>+</SUP>, isospin <I>I </I>= 0,1 and strangeness <I>S </I>= 0, -1, -2. For the channel with quantum numbers <I>J<SUP>p </SUP></I>= <SUP>1</SUP>/<SUB>2</SUB><SUP>+ </SUP>we discuss the form factors for semileptonic decays of heavy baryons, compute th

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Wilhelm, Matthias Oliver. "Form factors and the dilatation operator in N = 4 super Yang-Mills theory and its deformations." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2016. http://dx.doi.org/10.18452/17453.

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Im ersten Teil dieser Dissertation untersuchen wir Formfaktoren von allgemeinen eichinvarianten lokalen zusammengesetzten Operatoren in der N=4 Super-Yang-Mills-Theorie bei verschiedenen Schleifenordnungen und Anzahlen externer Felder. Wir zeigen, wie Masseschalen-Methoden zu ihrer Berechnung genutzt werden können, und extrahieren aus ihnen insbesondere den Dilatationsoperator. Wir untersuchen auch die Eigenschaften der zugehörigen Rückstandsfunktionen. Des Weiteren verallgemeinern wir Masseschalen-Diagramme, Graßmann-Integrale und die integrabilitätsinspirierte Technik der R-Operatoren zur

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Zimmermann, Iris [Verfasser]. "Feasibility studies for the measurement of the time-like electromagnetic proton form factors at the PANDA experiment / Iris Zimmermann." Mainz : Universitätsbibliothek Mainz, 2018. http://d-nb.info/1170178448/34.

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