Calculation of some phenomenologically relevant quantities in lattice QCD
Calculation of some phenomenologically relevant quantities in lattice QCD
Somewhat mutually independent studies in lattice phenomenology, one on doublecharm baryon spectroscopy and one on an unquenched calculation of BK are reported alongwith a study of possible solutions to the problem of extracting a signal for static quarks with reference to the Λb lifetime problem. All simulations are performed with non-perturbatively O(a)-improved Wilson fermions. Double- and single-charm baryon masses and splittings are found in agreement with experiment where data is available and further predictions are provided. Sea quark effects are found to be significant in BK, and seem to lower the value. For, the Λb-lifetime, a calculation using maximal variance reduced all-to-all propagators with novel fat static quarks is judged to be quite promising, while the extended propagator approach is found to be inefficient.
University of Southampton
Tariq, Abdullah Shams Bin
3a494210-7329-450d-af90-181aa6f85ed5
2004
Tariq, Abdullah Shams Bin
3a494210-7329-450d-af90-181aa6f85ed5
Tariq, Abdullah Shams Bin
(2004)
Calculation of some phenomenologically relevant quantities in lattice QCD.
University of Southampton, Doctoral Thesis.
Record type:
Thesis
(Doctoral)
Abstract
Somewhat mutually independent studies in lattice phenomenology, one on doublecharm baryon spectroscopy and one on an unquenched calculation of BK are reported alongwith a study of possible solutions to the problem of extracting a signal for static quarks with reference to the Λb lifetime problem. All simulations are performed with non-perturbatively O(a)-improved Wilson fermions. Double- and single-charm baryon masses and splittings are found in agreement with experiment where data is available and further predictions are provided. Sea quark effects are found to be significant in BK, and seem to lower the value. For, the Λb-lifetime, a calculation using maximal variance reduced all-to-all propagators with novel fat static quarks is judged to be quite promising, while the extended propagator approach is found to be inefficient.
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Published date: 2004
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Local EPrints ID: 465481
URI: http://eprints.soton.ac.uk/id/eprint/465481
PURE UUID: 6c2a1195-3465-417e-b98a-97c976186609
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Date deposited: 05 Jul 2022 01:21
Last modified: 16 Mar 2024 20:12
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Author:
Abdullah Shams Bin Tariq
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