Amplitude Analysis of B± →π±K+K- Decays

(LHCb Collaboration)

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

The first amplitude analysis of the B±→π±K+K- decay is reported based on a data sample corresponding to an integrated luminosity of 3.0 fb-1 of pp collisions recorded in 2011 and 2012 with the LHCb detector. The data are found to be best described by a coherent sum of five resonant structures plus a nonresonant component and a contribution from ππ↔KK S-wave rescattering. The dominant contributions in the π± K and K+ K- systems are the nonresonant and the B±→ρ(1450)0π± amplitudes, respectively, with fit fractions around 30%. For the rescattering contribution, a sizable fit fraction is observed. This component has the largest CP asymmetry reported to date for a single amplitude of (-66±4±2)%, where the first uncertainty is statistical and the second systematic. No significant CP violation is observed in the other contributions.

Original languageEnglish
Article number231802
Pages (from-to)1-11
Number of pages11
JournalPhysical Review Letters
Volume123
Issue number23
DOIs
Publication statusPublished - 6 Dec 2019

Fingerprint

Dive into the research topics of 'Amplitude Analysis of B± →π±K+K- Decays'. Together they form a unique fingerprint.

Cite this