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Evidence for a Bs0 π± State

  • D0 Collaboration
  • Joint Institute for Nuclear Research
  • University of Oklahoma
  • Tata Institute of Fundamental Research
  • University of Illinois at Chicago
  • Florida State University
  • University of Manchester
  • RAS - Saint Petersburg Nuclear Physics Institute
  • University of Michigan, Ann Arbor
  • Augustana College, Sioux Falls
  • Louisiana Tech University
  • Czech Technical University in Prague
  • Kyiv National Taras Shevchenko University
  • Universidad de los Andes Colombia
  • Université Blaise Pascal
  • Fermi National Accelerator Laboratory
  • University of Virginia
  • Northeastern University
  • University of Kansas
  • CEA Saclay
  • Universidade do Estado do Rio de Janeiro
  • Panjab University
  • Universités Paris VI and VII
  • University of Freiburg
  • Lancaster University
  • Imperial College London
  • University of Mississippi
  • Northern Illinois University
  • University of Nebraska-Lincoln
  • Stony Brook University
  • Lomonosov Moscow State University
  • NASU - Institute of Nuclear Research
  • University of Texas at Arlington
  • II. Physikalisches Institut
  • University of Göttingen
  • University of Washington
  • Michigan State University

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

193 Citas (Scopus)

Resumen

We report evidence for a narrow structure, X(5568), in the decay sequence X(5568)→Bs0π±, Bs0→J/ψφ, J/ψ→μ+μ-, φ→K+K-. This is evidence for the first instance of a hadronic state with valence quarks of four different flavors. The mass and natural width of this state are measured to be m=5567.8±2.9(stat)-1.9+0.9(syst) MeV/c2 and Γ=21.9±6.4(stat)-2.5+5.0(syst) MeV/c2. If the decay is X(5568)→Bs∗π±→Bs0γπ± with an unseen γ, m(X(5568)) will be shifted up by m(Bs∗)-m(Bs0)∼49 MeV/c2. This measurement is based on 10.4 fb-1 of pp collision data at s=1.96 TeV collected by the D0 experiment at the Fermilab Tevatron collider.

Idioma originalInglés
Número de artículo022003
PublicaciónPhysical Review Letters
Volumen117
N.º2
DOI
EstadoPublicada - 7 jul 2016

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