Adelaide Research & Scholarship
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https://hdl.handle.net/2440/77329
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| Type: | Journal article |
| Title: | Measurement of the Λ(b)⁰ lifetime and mass in the ATLAS experiment |
| Other Titles: | Measurement of the Lambda (0)(b) lifetime and mass in the ATLAS experiment |
| Author: | Jackson, P. White, M. |
| Citation: | Physical Review D: Particles, Fields, Gravitation and Cosmology, 2013; 87(3):1-19 |
| Publisher: | American Physical Soc |
| Issue Date: | 2013 |
| ISSN: | 1550-7998 1550-2368 |
| Statement of Responsibility: | G. Aad ... P. Jackson ... et al. (ATLAS Collaboration) |
| Abstract: | A measurement of the Λb0 lifetime and mass in the decay channel Λb0→J/ψ(μ+μ-)Λ0(pπ -) is presented. The analysis uses a signal sample of about 2200 Λb0 and Λ̄b0 decays that are reconstructed in 4.9 fb -1 of ATLAS pp collision data collected in 2011 at the LHC center-of-mass energy of 7 TeV. A simultaneous mass and decay time maximum likelihood fit is used to extract the Λb0 lifetime and mass. They are measured to be τΛb=1.449±0.036(stat) ±0.017(syst) ps and mΛb=5619.7±0. 7(stat)±1.1(syst) MeV. |
| Rights: | © 2013 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. |
| DOI: | 10.1103/PhysRevD.87.032002 |
| Published version: | http://dx.doi.org/10.1103/PhysRevD.87.032002 |
| Appears in Collections: | Aurora harvest Chemistry and Physics publications |
Files in This Item:
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| hdl_77329.pdf | Published version | 454.23 kB | Adobe PDF | View/Open |
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