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The ρ Meson Spectrum and Kπ Scattering with Partial Wave Mixing in Lattice QCD

Hanlon, Andrew D. (2018) The ρ Meson Spectrum and Kπ Scattering with Partial Wave Mixing in Lattice QCD. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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Abstract

The finite-volume QCD spectrum in the I = 1, S = 0, parity-odd, G-parity-even channels for zero total momentum is studied using lattice QCD, and the K-matrix for Kπ scattering is investigated to determine the mass and decay width of the K*(892) from first principles. The recently developed stochastic LapH method has proven to be a valuable tool in lattice QCD calculations when all-to-all quark propagators are needed, as is the case for isoscalar mesons and two-hadron operators. This method is especially important for large volumes where other methods do not scale well. These calculations were done with 412 gauge configurations using clover-improved Wilson fermions on a large anisotropic 32³ × 256 lattice with a pion mass near 240 MeV. The stationary states determined to be single-particle dominated are compared with the experimental resonances and are found to be in reasonable agreement. Additionally, the initial development of tetraquark operators is described.

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Details

Item Type: University of Pittsburgh ETD
Status: Unpublished
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Hanlon, Andrew D.adh58@pitt.eduadh580000-0001-8786-8053
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairLeibovich, Adamakl2@pitt.eduakl2
Committee CoChairMorningstar, Colincolin_morningstar@cmu.edu
Committee MemberBoyanovsky, Danielboyan@pitt.eduboyan
Committee MemberSwanson, Ericswansone@pitt.eduswansone
Committee MemberSavinov, Vladimirvps3@pitt.eduvps3
Date: 31 January 2018
Date Type: Publication
Defense Date: 28 September 2017
Approval Date: 31 January 2018
Submission Date: 4 October 2017
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 238
Institution: University of Pittsburgh
Schools and Programs: Dietrich School of Arts and Sciences > Physics
Degree: PhD - Doctor of Philosophy
Thesis Type: Doctoral Dissertation
Refereed: Yes
Uncontrolled Keywords: lattice, qcd, hadrons, spectroscopy, particle physics
Date Deposited: 31 Jan 2018 15:59
Last Modified: 31 Jan 2018 15:59
URI: http://d-scholarship.pitt.edu/id/eprint/33243

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