# Evidence for a B_{s}^{0}π^{±} State.

@article{Abazov2016EvidenceFA,
title={Evidence for a B\_\{s\}^\{0\}$\pi$^\{±\} State.},
journal={Physical review letters},
year={2016},
volume={117 2},
pages={
022003
}
}
• Published 24 February 2016
• Physics
• Physical review letters
We report evidence for a narrow structure, X(5568), in the decay sequence X(5568)→B_{s}^{0}π^{±}, 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)_{-1.9}^{+0.9}(syst)  MeV/c^{2} and Γ=21.9±6.4(stat)_{-2.5}^{+5.0}(syst)  MeV/c^{2}. If the decay is X(5568)→B_{s}^{*}π^{±}→B_{s}^{0}γπ^{±} with an unseen γ, m(X(5568…

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## References

SHOWING 1-10 OF 18 REFERENCES

### Evidence for a Narrow Near-Threshold Structure in the J/ψφ Mass Spectrum in B + → J/ψφK + Decays

• Physics
• 2009
Evidence is reported for a narrow structure near the J/ψφ threshold in exclusive B + → J/ψφK + decays produced in pp collisions at √s = 1.96 TeV. A signal of 14 ± 5 events, with statistical

### Observation of two charged bottomoniumlike resonances in Υ(5S) decays.

• Physics
Physical review letters
• 2012
The observation of two narrow structures in the mass spectra of the π(±)Υ(nS) and π (±)h(b)(mP) pairs that are produced in association with a single charged pion in Υ(5S) decays is reported.

### Study of e+ e- → π+ π- J/ψ and observation of a charged charmoniumlike state at Belle.

• Physics
Physical review letters
• 2013
In a study of Y(4260) → π+ π- J/φ decays, a structure is observed in the M(π(±)J/ψ) mass spectrum with 5.2σ significance that can be interpreted as a new charged charmoniumlike state.

### Observation of a charged charmoniumlike structure in e+ e- → (D* D*)± π∓ at √s = 4.26  GeV.

• Physics
Physical review letters
• 2014
We study the process e+ e- →(D* D*)± π∓ at a center-of-mass energy of 4.26 GeV using a 827  pb(-1) data sample obtained with the BESIII detector at the Beijing Electron Positron Collider. Based on a

### Doubly Heavy Tetraquarks and Baryons

During the last three years strong experimental evidence from B and charm factories has been accumulating for the existence of exotic hadronic quarkonia, narrow resonances which cannot be made from a

### Review of Particle Physics

• K. Olive
• Physics, Environmental Science
Physical review. D, Particles and fields
• 1996
The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 3,283 new measurements from 899 papers, we list, evaluate, and average measured properties of

### Trial factors for the look elsewhere effect in high energy physics

• Physics
• 2010
When searching for a new resonance somewhere in a possible mass range, the significance of observing a local excess of events must take into account the probability of observing such an excess

### Observation of a Resonancelike Structure in the π +- ψ ' Mass Distribution in Exclusive B→Kπ +- ψ ' Decays

• Physics
• 2007
Reference EPFL-ARTICLE-154575doi:10.1103/PhysRevLett.100.142001View record in Web of Science Record created on 2010-11-05, modified on 2017-12-10