English
español
Please use this identifier to cite or link to this item:
http://hdl.handle.net/10261/194585
Share/Impact:
Statistics |
![]() ![]() ![]() |
|
|
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |||
|
Title: | Combinations of single-top-quark production cross-section measurements and |f LV Vtb| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments |
Authors: | Álvarez Piqueras, D. ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Issue Date: | May-2019 |
Publisher: | Springer Nature |
Citation: | Journal of High Energy Physics 2019: 88 (2019) |
Abstract: | This paper presents the combinations of single-top-quark production cross-section measurements by the ATLAS and CMS Collaborations, using data from LHC proton-proton collisions at s = 7 and 8 TeV corresponding to integrated luminosities of 1.17 to 5.1 fb at s = 7 TeV and 12.2 to 20.3 fb at s = 8 TeV. These combinations are performed per centre-of-mass energy and for each production mode: t-channel, tW, and s-channel. The combined t-channel cross-sections are 67.5 ± 5.7 pb and 87.7 ± 5.8 pb at s = 7 and 8 TeV respectively. The combined tW cross-sections are 16.3 ± 4.1 pb and 23.1 ± 3.6 pb at s = 7 and 8 TeV respectively. For the s-channel cross-section, the combination yields 4.9 ± 1.4 pb at s = 8 TeV. The square of the magnitude of the CKM matrix element V multiplied by a form factor f is determined for each production mode and centre-of-mass energy, using the ratio of the measured cross-section to its theoretical prediction. It is assumed that the top-quark-related CKM matrix elements obey the relation |V|, |V| ≪ |V|. All the |fV| determinations, extracted from individual ratios at s = 7 and 8 TeV, are combined, resulting in |fV| = 1.02 ± 0.04 (meas.) ± 0.02 (theo.). All combined measurements are consistent with their corresponding Standard Model predictions.[Figure not available: see fulltext.]. |
Description: | The ATLAS and CMS collaborations: et al. |
Publisher version (URL): | https://doi.org/10.1007/JHEP05(2019)088 |
URI: | http://hdl.handle.net/10261/194585 |
DOI: | http://dx.doi.org/10.1007/JHEP05(2019)088 |
Identifiers: | doi: 10.1007/JHEP05(2019)088 issn: 1029-8479 |
Appears in Collections: | (IFCA) Artículos (IFIC) Artículos |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
31_CombinationsOFSingle-top-quark_ATLAS.pdf | 1,13 MB | Adobe PDF | ![]() View/Open |
Show full item record
Review this work
Review this work
WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.