Journal
PHYSICAL REVIEW LETTERS
Volume 114, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.062001
Keywords
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Funding
- Department of Energy and National Science Foundation (United States of America)
- Alternative Energies and Atomic Energy Commission (France)
- National Center for Scientific Research/National Institute of Nuclear and Particle Physics (France)
- Ministry of Education and Science of the Russian Federation (Russia)
- National Research Center Kurchatov Institute of the Russian Federation (Russia)
- Russian Foundation for Basic Research (Russia)
- National Council for the Development of Science and Technology (Brazil)
- Carlos Chagas Filho Foundation for the Support of Research in the State of Rio de Janeiro (Brazil)
- Department of Atomic Energy (India)
- Department of Science and Technology (India)
- Administrative Department of Science, Technology, and Innovation (Colombia)
- National Council of Science and Technology (Mexico)
- National Research Foundation of Korea (Korea)
- Foundation for Fundamental Research on Matter (The Netherlands)
- Science and Technology Facilities Council (United Kingdom)
- Royal Society (United Kingdom)
- Ministry of Education, Youth and Sports (Czech Republic)
- Bundesministerium fur Bildung und Forschung (Federal Ministry of Education and Research) (Germany)
- Deutsche Forschungsgemeinschaft (German Research Foundation) (Germany)
- Science Foundation Ireland (Ireland)
- Swedish Research Council (Sweden)
- China Academy of Sciences (China)
- National Natural Science Foundation of China (China)
- Ministry of Education and Science of Ukraine (Ukraine)
- ICREA Funding Source: Custom
- STFC [ST/K001388/1, ST/M000664/1, PP/D004284/1, ST/M503575/1, ST/J501074/1, ST/K50208X/1, ST/K001604/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/D004284/1, ST/M503575/1, ST/K001418/1, ST/K001604/1, ST/K50208X/1, ST/K001388/1, ST/M000664/1, ST/M001474/1, ST/J501074/1] Funding Source: researchfish
- Direct For Mathematical & Physical Scien
- Division Of Physics [1306951, 1206092, 1205960] Funding Source: National Science Foundation
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We present an updated measurement of the B-s(0) lifetime using the semileptonic decays B-s(0) -> D-s(-)mu(+)nu X, with D-s(-) -> phi pi(-) and phi -> K+K- (and the charge conjugate process). This measurement uses the full Tevatron Run II sample of proton-antiproton collisions at root s = 1.96 TeV, comprising an integrated luminosity of 10.4 fb(-1). We find a flavor-specific lifetime tau(fs)(B-s(0)) = 1.479 +/- 0.010(stat) +/- 0.021(syst) ps. This technique is also used to determine the B-0 lifetime using the analogous B-0 -> D- mu(+)nu X decay with D- -> phi pi(-) and phi -> K+K-, yielding tau(B-0) = 1.534 +/- 0.019(stat) +/- 0.021(syst) ps. Both measurements are consistent with the current world averages, and the B-s(0) lifetime measurement is one of the most precise to date. Taking advantage of the cancellation of systematic uncertainties, we determine the lifetime ratio tau(fs)(B-s(0))/tau(B-0) = 0.964 +/- 0.013(stat) +/- 0.007(syst).
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