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Title: Observation of B{sub s}{sup 0}-B{sub s}{sup 0} Oscillations

Abstract

We report the observation of B{sub s}{sup 0}-B{sub s}{sup 0} oscillations from a time-dependent measurement of the B{sub s}{sup 0}-B{sub s}{sup 0} oscillation frequency {delta}m{sub s}. Using a data sample of 1 fb{sup -1} of pp collisions at {radical}(s)=1.96 TeV collected with the CDF II detector at the Fermilab Tevatron, we find signals of 5600 fully reconstructed hadronic B{sub s} decays, 3100 partially reconstructed hadronic B{sub s} decays, and 61 500 partially reconstructed semileptonic B{sub s} decays. We measure the probability as a function of proper decay time that the B{sub s} decays with the same, or opposite, flavor as the flavor at production, and we find a signal for B{sub s}{sup 0}-B{sub s}{sup 0} oscillations. The probability that random fluctuations could produce a comparable signal is 8x10{sup -8}, which exceeds 5{sigma} significance. We measure {delta}m{sub s}=17.77{+-}0.10(stat){+-}0.07(syst) ps{sup -1} and extract vertical bar V{sub td}/V{sub ts} vertical bar =0.2060{+-}0.0007({delta}m{sub s}){sub -0.0060}{sup +0.0081}({delta}m{sub d}+theor)

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [1]; ; ; ;  [2]
  1. University of Illinois, Urbana, Illinois 61801 (United States)
  2. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States) (and others)
Publication Date:
OSTI Identifier:
20861473
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 97; Journal Issue: 24; Other Information: DOI: 10.1103/PhysRevLett.97.242003; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; B NEUTRAL MESONS; FERMILAB COLLIDER DETECTOR; FERMILAB TEVATRON; FLAVOR MODEL; OSCILLATIONS; PROBABILITY; PROTON-PROTON INTERACTIONS; RANDOMNESS; SEMILEPTONIC DECAY; SIGNALS; TEV RANGE 01-10; TIME DEPENDENCE

Citation Formats

Abulencia, A., Budd, S., Ciobanu, C. I., Errede, D., Errede, S., Gerberich, H., Grundler, U., Junk, T. R., Kraus, J., Liss, T. M., Marino, C. P., Pitts, K., Rogers, E., Taffard, A., Veramendi, G., Zhang, X., Adelman, J., Brubaker, E., Fedorko, W. T., and Frisch, H. J. Observation of B{sub s}{sup 0}-B{sub s}{sup 0} Oscillations. United States: N. p., 2006. Web. doi:10.1103/PHYSREVLETT.97.242003.
Abulencia, A., Budd, S., Ciobanu, C. I., Errede, D., Errede, S., Gerberich, H., Grundler, U., Junk, T. R., Kraus, J., Liss, T. M., Marino, C. P., Pitts, K., Rogers, E., Taffard, A., Veramendi, G., Zhang, X., Adelman, J., Brubaker, E., Fedorko, W. T., & Frisch, H. J. Observation of B{sub s}{sup 0}-B{sub s}{sup 0} Oscillations. United States. doi:10.1103/PHYSREVLETT.97.242003.
Abulencia, A., Budd, S., Ciobanu, C. I., Errede, D., Errede, S., Gerberich, H., Grundler, U., Junk, T. R., Kraus, J., Liss, T. M., Marino, C. P., Pitts, K., Rogers, E., Taffard, A., Veramendi, G., Zhang, X., Adelman, J., Brubaker, E., Fedorko, W. T., and Frisch, H. J. Fri . "Observation of B{sub s}{sup 0}-B{sub s}{sup 0} Oscillations". United States. doi:10.1103/PHYSREVLETT.97.242003.
@article{osti_20861473,
title = {Observation of B{sub s}{sup 0}-B{sub s}{sup 0} Oscillations},
author = {Abulencia, A. and Budd, S. and Ciobanu, C. I. and Errede, D. and Errede, S. and Gerberich, H. and Grundler, U. and Junk, T. R. and Kraus, J. and Liss, T. M. and Marino, C. P. and Pitts, K. and Rogers, E. and Taffard, A. and Veramendi, G. and Zhang, X. and Adelman, J. and Brubaker, E. and Fedorko, W. T. and Frisch, H. J.},
abstractNote = {We report the observation of B{sub s}{sup 0}-B{sub s}{sup 0} oscillations from a time-dependent measurement of the B{sub s}{sup 0}-B{sub s}{sup 0} oscillation frequency {delta}m{sub s}. Using a data sample of 1 fb{sup -1} of pp collisions at {radical}(s)=1.96 TeV collected with the CDF II detector at the Fermilab Tevatron, we find signals of 5600 fully reconstructed hadronic B{sub s} decays, 3100 partially reconstructed hadronic B{sub s} decays, and 61 500 partially reconstructed semileptonic B{sub s} decays. We measure the probability as a function of proper decay time that the B{sub s} decays with the same, or opposite, flavor as the flavor at production, and we find a signal for B{sub s}{sup 0}-B{sub s}{sup 0} oscillations. The probability that random fluctuations could produce a comparable signal is 8x10{sup -8}, which exceeds 5{sigma} significance. We measure {delta}m{sub s}=17.77{+-}0.10(stat){+-}0.07(syst) ps{sup -1} and extract vertical bar V{sub td}/V{sub ts} vertical bar =0.2060{+-}0.0007({delta}m{sub s}){sub -0.0060}{sup +0.0081}({delta}m{sub d}+theor)},
doi = {10.1103/PHYSREVLETT.97.242003},
journal = {Physical Review Letters},
number = 24,
volume = 97,
place = {United States},
year = {Fri Dec 15 00:00:00 EST 2006},
month = {Fri Dec 15 00:00:00 EST 2006}
}