Journal article
Combinations of single-top-quark production cross-section measurements and |fLVVtb| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments
The journal of high energy physics, Vol.2019(5), 88
2019
DOI: 10.1007/JHEP05(2019)088
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 = 7 and 8 TeV corresponding to integrated luminosities of 1.17 to 5.1 fb(-1) at = 7 TeV and 12.2 to 20.3 fb(-1) at = 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 = 7 and 8 TeV respectively. The combined tW cross-sections are 16.3 +/- 4.1 pb and 23.1 +/- 3.6 pb at = 7 and 8 TeV respectively. For the s-channel cross-section, the combination yields 4.9 +/- 1.4 pb at = 8 TeV. The square of the magnitude of the CKM matrix element V-tb multiplied by a form factor f(LV) 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-td|, |V-ts| << |V-tb|. All the |f(LV)V(tb)|(2) determinations, extracted from individual ratios at = 7 and 8 TeV, are combined, resulting in |f(LV)V(tb)| = 1.02 +/- 0.04 (meas.) +/- 0.02 (theo.). All combined measurements are consistent with their corresponding Standard Model predictions.
Details
- Title: Subtitle
- Combinations of single-top-quark production cross-section measurements and |fLVVtb| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments
- Creators
- Filip Backman - Oskar Klein-centrum för kosmopartikelfysik (OKC)Gabriele Bertoli - Oskar Klein-centrum för kosmopartikelfysik (OKC)Christian Bohm - FysikumRebecca M. D. Carney - Oskar Klein-centrum för kosmopartikelfysik (OKC)Christophe Clément - Oskar Klein-centrum för kosmopartikelfysik (OKC)Sten Hellman - Oskar Klein-centrum för kosmopartikelfysik (OKC)Kerstin Jon-And - Oskar Klein-centrum för kosmopartikelfysik (OKC)Alexandros Kastanas - Oskar Klein-centrum för kosmopartikelfysik (OKC)David A. Milstead - Oskar Klein-centrum för kosmopartikelfysik (OKC)Torbjörn Moa - Oskar Klein-centrum för kosmopartikelfysik (OKC)Patrawan Pasuwan - Oskar Klein-centrum för kosmopartikelfysik (OKC)Nabila W. Shaikh - Oskar Klein-centrum för kosmopartikelfysik (OKC)Samuel B. Silverstein - FysikumJörgen Sjölin - Oskar Klein-centrum för kosmopartikelfysik (OKC)Sara Strandberg - Oskar Klein-centrum för kosmopartikelfysik (OKC)Michaël Ughetto - Oskar Klein-centrum för kosmopartikelfysik (OKC)Eduardo Valdes Santurio - Oskar Klein-centrum för kosmopartikelfysik (OKC)Veronica Wallängen - Oskar Klein-centrum för kosmopartikelfysik (OKC)ATLAS CollaborationYasar Onel - Physics and AstronomyJane M Nachtman - Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- The journal of high energy physics, Vol.2019(5), 88
- DOI
- 10.1007/JHEP05(2019)088
- ISSN
- 1029-8479
- eISSN
- 1029-8479
- Language
- English
- Date published
- 2019
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984429055802771
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