Open AccessObservation of the Decay B0->rho+rho- and Measurement of the Branching Fraction and Polarization
Author(s) -
B. Aubert
Publication year - 2003
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/826578
Subject(s) - branching fraction , physics , lambda , polarization (electrochemistry) , beta decay , analytical chemistry (journal) , nuclear physics , atomic physics , chemistry , optics , chromatography
We have observed the rare decay B0->rho+rho- in a sample of 89 million BBbar pairs recorded with the BABAR detector. We measure the branching fraction B(B0->rho+rho-)=(27+7-6+5-7)10^-6 and determine the longitudinal polarization fraction Gamma_L/Gamma=0.99+0.01-0.07+-0.03. Our results are preliminary.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom