We use cookies to ensure that we give you the best experience on our website. By continuing to browse this repository, you give consent for essential cookies to be used. You can read more about our Privacy and Cookie Policy.

Durham e-Theses
You are in:

Rare Decays of Heavy Baryons using Soft Collinear Effective Theory

YIP, MATTHEW WING YU (2013) Rare Decays of Heavy Baryons using Soft Collinear Effective Theory. Doctoral thesis, Durham University.



In the era of high-luminosity hadronic colliders, the rare heavy-to-light decay Lambda_b to Lambda l+ l- receives increasing research attention in both experimental and theoretical particle phenomenology. This flavour-changing neutral-current decay is a potential window for the discovery of new Physics beyond the Standard Model through its helicity-sensitive nature, complementing past and ongoing searches and calculations related to the B meson.

In this work the universal soft form factor in the heavy-quark and large-recoil limits is calculated using light-cone sum rules in the framework of soft-collinear effective theory, as is the O(alpha_s) correction from hard-collinear gluon exchange.
Numerical estimates on form-factor ratios and experimental observables are presented. Related issues, including baryonic transition form factors and in particular light-cone distribution amplitudes for the heavy baryon Lambda_b, are also discussed.

Item Type:Thesis (Doctoral)
Award:Doctor of Philosophy
Keywords:Particle Physics, Theoretical Physics, Flavour Physics
Faculty and Department:Faculty of Science > Physics, Department of
Thesis Date:2013
Copyright:Copyright of this thesis is held by the author
Deposited On:30 Aug 2013 09:09

Social bookmarking: del.icio.usConnoteaBibSonomyCiteULikeFacebookTwitter