Observation of the B0 → ρ0ρ0 decay from an amplitude analysis of B0 → (π+π-)(π+π-) decays

31Citations
Citations of this article
8Readers
Mendeley users who have this article in their library.

This article is free to access.

Abstract

Proton-proton collision data recorded in 2011 and 2012 by the LHCb experiment, corresponding to an integrated luminosity of 3.0 fb-1, are analysed to search for the charmless B0→ρ0ρ0 decay. More than 600 B0→(π+π-)(π+π-) signal decays are selected and used to perform an amplitude analysis, under the assumption of no CP violation in the decay, from which the B0→ρ0ρ0 decay is observed for the first time with 7.1 standard deviations significance. The fraction of B0→ρ0ρ0 decays yielding a longitudinally polarised final state is measured to be fL=0.745-0.058+0.048(stat)±0.034(syst). The B0→ρ0ρ0 branching fraction, using the B0→ϕK*(892)0 decay as reference, is also reported as B(B0→ρ0ρ0)=(0.94±0.17(stat)±0.09(syst)±0.06(BF))×10-6.

Cite

CITATION STYLE

APA

Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., … Zhong, L. (2015). Observation of the B0 → ρ0ρ0 decay from an amplitude analysis of B0 → (π+π-)(π+π-) decays. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 747, 468–478. https://doi.org/10.1016/j.physletb.2015.06.027

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free