Abazov, VM;
Abbott, B;
Acharya, BS;
Adams, M;
Adams, T;
Agnew, JP;
Alexeev, GD;
... Zivkovic, L; + view all
(2016)
Evidence for a B0sπ±
State.
Physical Review Letters
, 117
(2)
, Article 022003. 10.1103/PhysRevLett.117.022003.
Preview |
Text
Scanlon_PhysRevLett.117.022003.pdf - Published Version Download (329kB) | Preview |
Abstract
We report evidence for a narrow structure, X ( 5568 ) , in the decay sequence X ( 5568 ) → B 0 s π ± , B 0 s → J / ψ ϕ , 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 / c 2 and Γ = 21.9 ± 6.4 ( stat ) + 5.0 − 2.5 ( syst ) MeV / c 2 . If the decay is X ( 5568 ) → B ∗ s π ± → B 0 s γ π ± with an unseen γ , m ( X ( 5568 ) ) will be shifted up by m ( B ∗ s ) − m ( B 0 s ) ∼ 49 MeV / c 2 . This measurement is based on 10.4 fb − 1 of p ¯ p collision data at √ s = 1.96 TeV collected by the D0 experiment at the Fermilab Tevatron collider.
| Type: | Article |
|---|---|
| Title: | Evidence for a B0sπ± State |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.117.022003 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.117.022003 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/1508685 |
Archive Staff Only
 |
View Item |
