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- W2022512618 abstract "I report the results of the first search for B{sub s} flavor oscillations performed at CDF II. We analyze a dataset of approximately 355 pb{sup -1} from proton-antiproton collisions at {radical}s = 1.96 TeV collected in 2002-2004 with the CDF II Detector at the Tevatron Collider. Samples of both fully reconstructed, B{sub s} {yields} D{sub s}{pi}, and partially reconstructed, B{sub s} {yields} D{sub s}/{nu}, decays are employed. A combination of tagging algorithms is used to determine the flavor of the B{sub s} mesons at production time. We fit the data using an unbinned likelihood technique which combines mass, proper decay time, and flavor tagging information of the B{sub s} candidates. Information about the oscillation frequency of the system {Delta}m{sub s} is obtained by performing an amplitude scan of the data, from which an exclusion limit: {Delta}m{sub s} > 7.9 ps{sup -1} (95% C.L.) is achieved, with a measured sensitivity of 8.4 ps{sup -1} Improvements currently under development, together with the increasing data samples, are expected to enhance the sensitivity beyond the Standard Model favored region before the end of Run II. Since the time the conference took place, part of the here mentioned improvements to the analysis have been incorporated,more » which result in the following updates: combined exclusion limit of {Delta}m{sub s} > 8.6 ps{sup -1}, with a measured sensitivity of 13.0 ps{sup -1}; combination with previously available measurements increases the world exclusion limit from 14.5 ps{sup -1} to 16.6 ps{sup -1} (95% C.L.).« less" @default.
- W2022512618 created "2016-06-24" @default.
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- W2022512618 date "2005-01-01" @default.
- W2022512618 modified "2023-09-27" @default.
- W2022512618 title "First B/s mixing results at CDF II" @default.
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