Rights statement: © 2016 American Physical Society
Accepted author manuscript, 233 KB, PDF document
Available under license: CC BY: Creative Commons Attribution 4.0 International License
Rights statement: © 2016 American Physical Society
Final published version, 322 KB, PDF document
Available under license: Unspecified
Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Evidence for a B0sπ± state
AU - Bertram, Iain Alexander
AU - Borissov, Guennadi
AU - Fox, Harald
AU - Ratoff, Peter Neil
AU - Ross, Anthony
AU - D0 Collaboration
N1 - © 2016 American Physical Society
PY - 2016/7/7
Y1 - 2016/7/7
N2 - We report evidence for a narrow structure, X(5568), in the decay sequence X(5568)→B0sπ±, B0s→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)+0.9−1.9(syst) MeV/c2 and Γ=21.9±6.4(stat)+5.0−2.5(syst) MeV/c2. If the decay is X(5568)→B∗sπ±→B0sγπ± with an unseen γ, m(X(5568)) will be shifted up by m(B∗s)−m(B0s)∼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.
AB - We report evidence for a narrow structure, X(5568), in the decay sequence X(5568)→B0sπ±, B0s→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)+0.9−1.9(syst) MeV/c2 and Γ=21.9±6.4(stat)+5.0−2.5(syst) MeV/c2. If the decay is X(5568)→B∗sπ±→B0sγπ± with an unseen γ, m(X(5568)) will be shifted up by m(B∗s)−m(B0s)∼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.
U2 - 10.1103/PhysRevLett.117.022003
DO - 10.1103/PhysRevLett.117.022003
M3 - Journal article
VL - 117
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 2
M1 - 022003
ER -