A search for the B-0 -> K+K- decay is performed using pp-collision data collected by LHCb. The data set corresponds to integrated luminosities of 1.0 and 2.0 fb(-1) at center-of-mass energies of 7 and 8 TeV, respectively. This decay is observed for the first time, with a significance of more than 5 standard deviations. The analysis also results in an improved measurement of the branching fraction for the B-s(0) -> pi(+)pi(-) decay. The measured branching fractions are B(B-0 -> K+K-) = (7.80 +/- 1.27 +/- 0.81 +/- 0.21) x 10(-8) and B(B-s(0) -> pi(+)p(-)) = (6.91 +/- 0.54 +/- 0.63 +/- 0.19 +/- 0.40) x 10(-7). The first uncertainty is statistical, the second is systematic, the third is due to the uncertainty on the B-0 -> K+pi(-) branching fra...
A search for the $B^0 \to K^+K^−$ decay is performed using pp-collision data collected by LHCb. The ...
A search for the B0\u2192K+K- decay is performed using pp-collision data collected by LHCb. The data...
A search for the B^{0}→K^{+}K^{-} decay is performed using pp-collision data collected by LHCb. The ...
A search for the B-0 -> K+K- decay is performed using pp-collision data collected by LHCb. The data ...
A search for the B0âK+K- decay is performed using pp-collision data collected by LHCb. The data set ...
A search for the $B^{0}\to K^{+}K^{-}$ decay is performed using $pp$-collision data collected by LHC...
A search for the B0→K+K- decay is performed using pp-collision data collected by LHCb. The data set ...
A search for the B^0→K^+K^- decay is performed using pp-collision data collected by LHCb. The data s...
A search for the $B^0 \to K^+K^−$ decay is performed using pp-collision data collected by LHCb. The ...
A search for the B0\u2192K+K- decay is performed using pp-collision data collected by LHCb. The data...
A search for the B^{0}→K^{+}K^{-} decay is performed using pp-collision data collected by LHCb. The ...
A search for the B-0 -> K+K- decay is performed using pp-collision data collected by LHCb. The data ...
A search for the B0âK+K- decay is performed using pp-collision data collected by LHCb. The data set ...
A search for the $B^{0}\to K^{+}K^{-}$ decay is performed using $pp$-collision data collected by LHC...
A search for the B0→K+K- decay is performed using pp-collision data collected by LHCb. The data set ...
A search for the B^0→K^+K^- decay is performed using pp-collision data collected by LHCb. The data s...
A search for the $B^0 \to K^+K^−$ decay is performed using pp-collision data collected by LHCb. The ...
A search for the B0\u2192K+K- decay is performed using pp-collision data collected by LHCb. The data...
A search for the B^{0}→K^{+}K^{-} decay is performed using pp-collision data collected by LHCb. The ...