The brown muck of b^0 and b^0_s mixing: beyond the standard model

quantum chromodynamics (QCD);lattice QCD (LQCD);non-perturbative;hadronization;brown muck;B mixing;Bs mixing;neutral meson mixing;hadronic mixing matrix elements;mixing matrix elements;beyond the Standard Model (BSM)

Bouchard, Christopher

关键词: quantum chromodynamics (QCD);    lattice QCD (LQCD);    non-perturbative;    hadronization;    brown muck;    B mixing;    Bs mixing;    neutral meson mixing;    hadronic mixing matrix elements;    mixing matrix elements;    beyond the Standard Model (BSM);   

Others  :  https://www.ideals.illinois.edu/bitstream/handle/2142/29819/Bouchard_Christopher.pdf?sequence=1&isAllowed=y

美国|英语

来源: The Illinois Digital Environment for Access to Learning and Scholarship

【 摘 要 】

Standard Model contributions to neutral B meson mixing begin at the one loop level where they are further suppressed by a combination of the GIM mechanism and Cabibbo suppression. This combination makes B meson mixing a promising probe of new physics, where as yet undiscovered particles and/or interactions can participate in the virtual loops.Relating underlying interactions of the mixing process to experimental observation requires a precise calculation of the non-perturbative process of hadronization, characterized by hadronic mixing matrix elements. This thesis describes a calculation of the hadronic mixing matrix elements relevant to a large class of new physics models. The calculation is performed via lattice QCD using the MILC collaboration’s gauge configurations with 2 + 1 dynamical sea quarks.