Evidence for a $B_s^0 \pi^\pm$ state

Abazov, V. M.

doi:10.1103/PhysRevLett.117.022003

Title: Evidence for a $$B_s^0 \pi^\pm$$ state

Journal Article · Thu Jul 07 00:00:00 EDT 2016 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.117.022003· OSTI ID:1253582

Abazov, V. M. ^[1]

Joint Inst. for Nuclear Research (JINR), Dubna (Russian Federation). et al.

Here, we report evidence for a narrow structure, X(5568), in the decay sequence X(5568)→$$B_s^0 \pi^\pm$$, B$$_s^0$$ →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) $$+0.9\atop{-1.9}$$ (syst) MeV/c² and Γ=21.9±6.4(stat)$$+5.0\atop{-2.5}$$ (syst) MeV/c². If the decay is X(5568)→B$$*\atop{s}$$ π^±→B$$0\atop{s}$$ γπ^± with an unseen γ, m(X(5568)) will be shifted up by m(B$$*\atop{s}$$ )-m(B$$0\atop{s}$$)~49 MeV/c². This measurement is based on 10.4 fb^-1 of $$p\bar{p}$$ collision data at $$\sqrt{s}$$ =1.96 TeV collected by the D0 experiment at the Fermilab Tevatron collider.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: D0 Collaboration

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1253582

Alternate ID(s):: OSTI ID: 1260864

Report Number(s):: FERMILAB-PUB-16-038-E; arXiv:1602.07588; 1423301; TRN: US1601715

Journal Information:: Physical Review Letters, Vol. 117, Issue 2; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 142 works

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Exotic triple-charm deuteron-like hexaquarks Chen, Rui; Wang, Fu-Lai; Hosaka, Atsushi arXiv https://doi.org/10.48550/arxiv.1804.02961	text	January 2018
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