Measurement of the effective lifetime
. (2012) Measurement of the effective lifetime. Physics Letters B, Vol.716 (No.3-5). pp. 393-400. ISSN 0370-2693 Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.physletb.2012.08.033
A precise determination of the effective B s 0→K +K - lifetime can be used to constrain contributions from physics beyond the Standard Model in the Bs0 meson system. Conventional approaches select B meson decay products that are significantly displaced from the B meson production vertex. As a consequence, B mesons with low decay times are suppressed, introducing a bias to the decay time spectrum which must be corrected. This analysis uses a technique that explicitly avoids a lifetime bias by using a neural network based trigger and event selection. Using 1.0 fb -1 of data recorded by the LHCb experiment, the effective B s 0→K +K - lifetime is measured as 1.455±0.046(stat.)±0.006(syst.)ps. © 2012 CERN.
|Item Type:||Journal Article|
|Divisions:||Faculty of Science > Physics|
|Journal or Publication Title:||Physics Letters B|
|Publisher:||Elsevier Science BV|
|Page Range:||pp. 393-400|
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