b-Physics measurements at the Tevatron: m and Delta m

Details b-Physics measurements at the Tevatron: m and Delta m b-Physics measurements at the Tevatron: m and Delta m

2005-06-22

arxiv.org/abs/hep-ex/0506049v1

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 4 figures, proceedings of the XL rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, M

Scientific paper

We present experimental results on b-hadron mass measurements and b-meson oscillations based on integrated luminosity of 250 to 450 pb-1 of proton-antiproton collisions at c.m. energy = 1.98 TeV by the CDF and D0 collaborations at the Tevatron. The masses of b-hadrons have been measured precisely by the CDF collaboration in decays containing a J/psi . A blind search of the decay mode Bc to J/psi pi resulted in a peak of 18.9 +/- 5.4 candidates at a mass value of 6287.0 +/- 4.5 +/- 1.1 MeV/c2. A new limit has been set to the decay B_d,s to mu+ mu-. Both the CDF and D0 collaborations are in the position to put a limit on the frequency of the Bs oscillations. D0 reports Delta m_s > 5.0 ps-1.

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