期刊
PHYSICAL REVIEW D
卷 97, 期 9, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.97.092004
关键词
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资金
- Fermi Research Alliance, LLC (FRA) [DE-AC02-07CH11359]
- Department of Energy (United States of America)
- 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 (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)
- STFC [ST/M006476/1, ST/M001180/1, ST/M002764/1, ST/K003488/1, ST/S006370/1, ST/N001346/1, ST/H001166/2, ST/S001883/1, ST/I005858/1, ST/N000374/1, ST/K001396/1, ST/R000034/1] Funding Source: UKRI
- Division Of Physics
- Direct For Mathematical & Physical Scien [1508869, 1506017] Funding Source: National Science Foundation
We present a study of the X-+/-(5568) using semileptonic decays of the B-s(0) meson using the full run II integrated luminosity of 10.4 fb(-1) in proton-antiproton collisions at a center of mass energy of 1.96 TeV collected with the DO detector at the Fermilab Tevatron Collider. We report evidence for a narrow structure, X-+/-(5568), in the decay sequence X-+/-(5568) -> B-s(0) pi(+/-) where B-s(0)-> mu(-/+) (DsX)-X-+/-, D-s(+/-)-> phi pi(+/-)which is consistent with the previous measurement by the DO Collaboration in the hadronic decay mode, X-+/-(5568) -> B-s(0)pi(+/-) where B-s(0) -> J/psi phi. The mass and width of this state are measured using a combined fit of the hadronic and semileptonic data, yielding m = 5566.9(-3.1)(+3.2)(stat)(-1.2)(+0.6)(syst) MeV/c(2), Gamma = 18.6(-6.1)(+7.9)(stat)(-3.8)(+3.5) (syst) McV/c(2) with a significance of 6.7 sigma.
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