Symmetries in the angular distribution of exclusive semileptonic B decays

Tobias Hurth, Ulrik Egede, Joaquim Matias, Marc Ramon, Will Reece

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review


We discuss a method to construct observables protected against QCD uncertainties based on the angular distribution of the exclusive Bd → K∗0(→ Kπ)l+l decay. We focus on the identification and the interpretation of all the symmetries of the distribution. They constitute a key ingredient to construct a set of so-called transverse observables. We work in the framework of QCD factorization at NLO supplemented by an estimate of power-suppressed Λ/mb corrections. A discussion of the new physics properties of two of the transverse asymmetries, A( T 2) and A( T 5), is presented. A comparison between the transverse asymmetry A( T 2) and the forward-backward asymmetry shows that A( T 2) emerges as an improved version of it.

Original languageEnglish
Title of host publicationProceedings of Science
Subtitle of host publication35th International Conference of High Energy Physics, ICHEP 2010; Paris; France; 22 July 2010 through 28 July 2010
Number of pages7
Publication statusPublished - 1 Jan 2010
Externally publishedYes
EventInternational Conference of High Energy Physics, ICHEP 2010 - Paris, France
Duration: 22 Jul 201028 Jul 2010
Conference number: 35th

Publication series

NameProceedings of Science
PublisherSissa Medialab, SRL
ISSN (Print)1824-8039


ConferenceInternational Conference of High Energy Physics, ICHEP 2010
Abbreviated titleICHEP 2010

Cite this