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Search for the flavor-changing neutral current decay Bs 0 → μ+ μ- pp̄ Collisions at √s = 1.96 TeV with the DO Detector

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2-s2.0-18144430233.pdf (150.73 KB)

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2005-02-25

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Abstract

We present the results of a search for the flavor-changing neutral current decay Bs 0 → μ+ μ-. using a data set with integrated luminosity of 240 pb-1 of pp̄ collisions at √s = 1.96 TeV collected with the D0 detector in run II of the Fermilab Tevatron collider. We find the upper limit on the branching fraction to be B(Bs 0 → μ+ π-) ≤ 5.0 × 10-7 at the 95% C.L. assuming no contributions from the decay Bd 0 → μ+ μ- in the signal region. This limit is the most stringent upper bound on the branching fraction Bs 0 → μ+ μ- to date. © 2005 The American Physical Society.

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Central fiber tracker (CFT), Dimuon triggers, Final event selection, Silicon microstrip tracker (SMT), Calorimeters, Computer simulation, Detectors, Error detection, Monte Carlo methods, Silicon, Trees (mathematics), Vectors, Current density

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English

Citation

Physical Review Letters, v. 94, n. 7, 2005.

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http://hdl.handle.net/11449/68136

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São Paulo - IFT - Instituto de Física Teórica

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