First observation of the decay B+ → π+ μ+ μ-

A discovery of the rare decay B+ → π+ μ+ μ- is presented. This decay is observed for the first time, with 5.2 σ significance. The observation is made using pp collision data, corresponding to an integrated luminosity of 1.0 fb -1, collected with the LHCb detector. The measured branching fraction is (2.3 ± 0.6 (stat.) ± 0.1 (syst.))×10-8, and the ratio of the B+ → π+ μ+ μ- and B+ → K+ μ+ μ- branching fractions is measured to be 0.053 ± 0.014 (stat.) ± 0.001 (syst.).

Title:

First observation of the decay B+ → π+ μ+ μ-
Authors: Aaij, Roel
Beteta, C. Abellán
Adametz, Aleksandra , ...
Keywords: Hadron
Decay
Energy
LHCb detector
Physics
Issue Date: 2012
Publisher: H. : ĐHQGHN
Abstract: A discovery of the rare decay B+ → π+ μ+ μ- is presented. This decay is observed for the first time, with 5.2 σ significance. The observation is made using pp collision data, corresponding to an integrated luminosity of 1.0 fb -1, collected with the LHCb detector. The measured branching fraction is (2.3 ± 0.6 (stat.) ± 0.1 (syst.))×10-8, and the ratio of the B+ → π+ μ+ μ- and B+ → K+ μ+ μ- branching fractions is measured to be 0.053 ± 0.014 (stat.) ± 0.001 (syst.).
Description: Journal of High Energy Physics 2012(12),125
URI: http://repository.vnu.edu.vn/handle/VNU_123/27469
Appears in Collections:Bài báo của ĐHQGHN trong Scopus

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