EPJ Web of Conferences
Volume 181, 2018International Conference on Exotic Atoms and Related Topics - EXA2017
|Number of page(s)||10|
|Published online||25 June 2018|
Results on b hadron properties in CMS
Institute of High Energy Physics (HEPHY), Vienna
* e-mail: firstname.lastname@example.org
Published online: 25 June 2018
The lifetime is among the fundamental properties of particles and is one of the important observables in heavy hadrons allowing to test the theoretical tools describing their physics. This report presents lifetime measurements of B0, B0s, Λ0b and B+c hadrons performed on data, corresponding to 19.7 fb-1, collected by the CMS experiment at the LHC at a center-of-mass energy of √s = 8 TeV. The B0 lifetime is measured to be 453:0± 1:6 (stat) ± 1:5 (syst) μm in J/ψK0S and 457:8 ± 2:7 (stat) ± 2:7 (syst) μm in J/ψK*(892)0. The B0s meson lifetime is measured in two decay modes with differing contributions from the heavy and light eigenstates, resulting in two different measured lifetimes: 504:3 ± 10:5 (stat) ±3:7 (syst) μm in J/ψπ+π- and 443:9±2:0 (stat) ±1:2 (syst) μm in J/ψϕ(1020) respectively. The lifetime of the Λ0b hadron is found to be 443:1±8:2 (stat) ±2:7 (syst) μm. The B+c lifetime is measured with respect to the B+ lifetime and is found to be 162:3 ± 8:2 (stat) ± 4:7 (syst) ± 0:1 (τB+) μm.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.