Flavor tagged time-dependent angular analysis of the B0s→J/ψϕ decay and extraction of ΔΓs and the weak phase ϕs in ATLAS
| Authors |
|
|---|---|
| Publication date | 2014 |
| Journal | Physical Review D. Particles, Fields, Gravitation, and Cosmology |
| Article number | 052007 |
| Volume | Issue number | 90 | 5 |
| Number of pages | 26 |
| Organisations |
|
| Abstract |
A measurement of the B0s→J/ψϕ decay parameters, updated to include flavor tagging is reported using 4.9 fb−1 of integrated luminosity collected by the ATLAS detector from √s = 7 TeV pp collisions recorded in 2011 at the LHC. The values measured for the physical parameters are
ϕs 0.12±0.25(stat)±0.05(syst) rad ΔΓs 0.053±0.021(stat)±0.010(syst) ps−1 Γs 0.677±0.007(stat)±0.004(syst) ps−1 |A‖(0)|2 0.220±0.008(stat)±0.009(syst) |A0(0)|2 0.529±0.006(stat)±0.012(syst) δ⊥=3.89±0.47(stat)±0.11(syst) rad where the parameter ΔΓs is constrained to be positive. The S-wave contribution was measured and found to be compatible with zero. Results for ϕs and ΔΓs are also presented as 68% and 95% likelihood contours, which show agreement with the Standard Model expectations. |
| Document type | Article |
| Note | ATLAS Collaboration |
| Language | English |
| Published at | https://doi.org/10.1103/PhysRevD.90.052007 |
| Downloads |
PhysRevD.90.052007
(Final published version)
|
| Permalink to this page | |