A search for the decays B0s → μ+ μ− and B0 → μ+ μ− is performed with 0.37 fb^−1 of pp collisions at √s = 7 TeV collected by the LHCb experiment in 2011. The upper limits on the branching fractions are B(B0s → μ+ μ−) < 1.6 x 10^−8 and B(B0 → μ+ μ−) < 3.6 x 10^−9 at 95% confidence level. A combination of these results with the LHCb limits obtained with the 2010 dataset leads to B(B0s → μ+ μ−) < 1.4 x 10^−8 and B(B0 → μ+ μ−) < 3.2 x 10^−9 at 95% confidence level.
R. Aaij, C. Abellan Beteta, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, et al. (2012). Search for the Rare Decays B0s → μ+ μ− and B0 → μ+ μ−. PHYSICS LETTERS. SECTION B, 708(1-2), 55-67 [10.1016/j.physletb.2012.01.038].
Search for the Rare Decays B0s → μ+ μ− and B0 → μ+ μ−
CARBONE, ANGELO;GALLI, DOMENICO;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;
2012
Abstract
A search for the decays B0s → μ+ μ− and B0 → μ+ μ− is performed with 0.37 fb^−1 of pp collisions at √s = 7 TeV collected by the LHCb experiment in 2011. The upper limits on the branching fractions are B(B0s → μ+ μ−) < 1.6 x 10^−8 and B(B0 → μ+ μ−) < 3.6 x 10^−9 at 95% confidence level. A combination of these results with the LHCb limits obtained with the 2010 dataset leads to B(B0s → μ+ μ−) < 1.4 x 10^−8 and B(B0 → μ+ μ−) < 3.2 x 10^−9 at 95% confidence level.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
