@article{10902/2155,
year = {2012},
month = {5},
url = {http://hdl.handle.net/10902/2155},
abstract = {We search for annihilation decay modes of neutral b mesons into pairs of charmless charged hadrons with the upgraded Collider Detector at the Fermilab Tevatron. Using a data sample corresponding to 6  fb-1 of integrated luminosity, we obtain the first evidence for the Bs0→π+π- decay, with a significance of 3.7σ, and a measured branching ratio B(Bs0→π+π-)=(0.57±0.15(stat)±0.10(syst))×10-6. A search for the B0→K+K- mode in the same sample yields a significance of 2.0σ, and a central value estimate B(B0→K+K-)=(0.23±0.10(stat)±0.10(syst))×10-6.},
publisher = {American Physical Society},
publisher = {Physical Review Letters, vol. 108, iss. 21, art. num. 211803 (2012)},
title = {Evidence for the Charmless Annihilation Decay Mode Bs0→π+π-},
author = {Aaltonen, Timo Antero and Álvarez González, Bárbara and Amerio, Silvia and Amidei, Dante and Anastassov, Anton and Annovi, Alberto and Antos, Jaroslav and Apollinari, Giorgio and Appel, Jeffrey A. and Casal Laraña, Bruno and Cuevas Maestro, Francisco Javier and Gómez Gramuglio, Gervasio and Palencia Cortezón, José Enrique and Rodrigo Anoro, Teresa and Ruiz Jimeno, Alberto and Scodellaro, Luca and Vila Álvarez, Iván  and Vilar Cortabitarte, Rocío and Vizán García, Jesús Manuel and Arisawa, Tetsuo},
}