Measurement of the relative width difference of the B0 - B$$\bar{B}$$0 system with the ATLAS detector
Journal Article
·
· Journal of High Energy Physics (Online)
This paper presents the measurement of the relative width difference ΔΓd/Γd of the B0 - B$$\bar{B}$$0 system using the data collected by the ATLAS experiment at the LHC in pp collisions at √s=7TeV and √s=8 TeV and corresponding to an integrated luminosity of 25.2 fb-1. The value of ΔΓd/Γd is obtained by comparing the decay-time distributions of B° → J/ψKS and B° → J/ψK*°(892) decays. The result is ΔΓd/Γd = (-0.1±1.1 (stat.)± 0.9 (syst.)) × 10-2. Currently, this is the most precise single measurement of ΔΓd/Γd. It agrees with the Standard Model prediction and the measurements by other experiments.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- The ATLAS collaboration
- DOE Contract Number:
- SC00112704
- OSTI ID:
- 1336098
- Report Number(s):
- BNL-112510-2016-JA; KA1101021
- Journal Information:
- Journal of High Energy Physics (Online), Vol. 2016, Issue 6; ISSN 1029-8479
- Publisher:
- Springer Berlin
- Country of Publication:
- United States
- Language:
- English
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