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Showing 1 to 20 of 136 for “"Hadrons"”.
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Quarks and hadrons on the lattice
… followed by a discussion of the construction of hadrons on the lattice, using either Wilson or Kogut-Susskind fermions. There is a chapter covering the algorithms used in numerical simulations of lattice QCD, with some examples illustrating them. The thesis concludes with a discussion of the …
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The scattering of spinning hadrons from lattice QCD
… strong interaction into a multitude of stable hadrons, such as the pion. The vast majority of resonances decay via an intermediate hadron with non-zero intrinsic spin. In this thesis, I will present the results of scattering calculations featuring mesons with non-zero intrinsic spin. Before …
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Gravitational form factors of hadrons from lattice QCD
The gravitational form factors (GFFs) of hadrons encode the matrix elements of the energy-momentum tensor of QCD. These quantities describe how energy, spin, and various mechanical properties of hadrons are carried by their quark and gluon constituents, and can be constrained using the framework of …
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On hadrons and inflatons: the holography of strongly coupled processes
Strong coupling presents problems for traditional quantum field theory as it escapes the purview of perturbation theory. The last decade has seen the emergence of a new tool to tackle such problems, arising from a new string duality that was discovered in the last years of the twentieth century. …
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Studies of the inclusive semileptonic decays of the b-hadrons
… to isolate different decay modes of the b-hadrons, is presented. Using the data collected by the DELPHI detector during the 1994 and 1995 data-taking periods, the inclusive b-hadron semileptonic branching fraction is measured to be B R b→ℓ % =10.75+/-0.15stat +/-0.28syst …
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Electromagnetic Form Factors of Hadrons in the Space-Like Region
… form together into complex bound states called hadrons, rather than appearing as free particles. Thus the study of the strong force becomes the study of hadrons and their structure. One way we may study the structure of these composite bound states is through their electromagnetic interactions. …
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The structure of hadrons and other potential phases of QCD
Quantum chromodynamics (QCD) is a mathematical theory describing subatomic particles called quarks and gluons, and the strong force that binds them together into protons and neutrons. This thesis centers on two major thrusts of modern QCD research: (1) uncovering the inner quark and gluon structure …
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A diquark interpretation of the structure and energies of hadrons
… organizes and classifies essentially all hadrons. The model is originally inspired from three simple theoretical indications including: treating baryons as a two body system with a diquark and quark connected by a flux tube, thereby indicating that they lie on Regge trajectories; allowing …
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Exploration of the role of diquarks in hadrons using lattice QCD
We perform a number of measurements relevant to nuclear and particle physics by using the tools of lattice QCD. We verify our lattice calculations by reproducing published meson masses. We then study the light quark distribution in a meson with one heavy quark. After improving our methods in the …
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Exploring the quark-gluon content of hadrons: from mesons to nuclear matters
… challenges for describing the properties of hadrons from the underlying quark-gluon degrees of freedom. Moreover, the problem of describing the nuclear force from its quark-gluon origin is still open. While a direct solution of QCD to describe the hadrons and nuclear force is not possible at …
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A study of the process e⁺e⁻ [arrow] hadrons at high energies
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1987.
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Inclusive Pion Production at Large and Small Transverse Momentum in a Model of Hadrons
Made available in DSpace on 2015-05-13T15:21:58Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7606935.PDF: 2102921 bytes, checksum: b89f129eef5c4b78b2f26f81a452a094 (MD5) Previous issue date: 1975
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Inclusive pion production at large and small transverse momentum in a model of hadrons
… momentum PT has been studied in a model of hadrons. The model has the Feynman diagram structure of the multiperipheral model. The off-shell hadron amplitudes are taken from field theoretic ideas, the relationship with electroproduction, factorization of off-shell behavior, a double offshell …
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Some Problems and Models Relating to the Elastic Scattering of Hadrons at Very High Energies
Submitted by Jesse Garrison (jagarris@illinois.edu) on 2012-01-12T18:28:18Z No. of bitstreams: 1 1974_davidson.pdf: 4355785 bytes, checksum: 8cf89923d301b42134421c86d0555145 (MD5)
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Gluon propagator in classical color field of colliding hadrons and its implications for hadronic cross sections
We review the Regge theory and the minijet model for pp and pp collisions. We show that, in the conventional minijet approach, the asymptotic behavior of the total cross section calculated using currently accepted gluon distribution function and perturbative QCD rises too rapidly when compared with …
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The interactions of hadrons containing a heavy quark in the strong coupling limit of lattice QCD
… calculate the interaction potentials between two hadrons that are pinned in place on the lattice by infinitely heavy quarks. The potentials are calculated to leading order in the strong coupling and hopping parameter expansions for the following six systems: meson/meson, baryon/antimeson, …
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Suppression of High Transverse Momentum Charged Hadrons in Au+Au Collisions at 200 GeV Nucleon-Nucleon Center of Mass Energy
… Quark-Gluon Plasma. The suppression of single hadrons still provides one of the strongest constraints on energy loss mechanisms in the Quark-Gluon Plasma. Presently, neutral pions provide the best measurement at RHIC of single particle suppression. Charged hadrons have independent sources of …
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Finite size corrections to the equation of state for nuclear matter near the phase transition hadron gas to quark gluon plasma
It is widely accepted that the finite size of the hadrons must be taken into account in a thermodynamic description of the hadron gas near the phase transition to quark gluon plasma. Existing thermodynamic models introducing a .correction due to the finite size of the particles are reviewed and …
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