scholarly journals B-hadron production in NNLO QCD: application to LHC t$$ \overline{t} $$ events with leptonic decays

2021 ◽  
Vol 2021 (10) ◽  
Author(s):  
Michał Czakon ◽  
Terry Generet ◽  
Alexander Mitov ◽  
Rene Poncelet
Keyword(s):  
Top Quark ◽  
Hadron Production ◽  
Precise Determination ◽  
Heavy Flavor ◽  
Hadron Colliders ◽  
Top Quark Mass ◽  
Leptonic Decays ◽  
Heavy Hadron ◽  
First Time

Abstract We calculate, for the first time, the NNLO QCD corrections to identified heavy hadron production at hadron colliders. The calculation is based on a flexible numeric framework which allows the calculation of any distribution of a single identified heavy hadron plus jets and non-QCD particles. As a first application we provide NNLO QCD predictions for several differential distributions of B hadrons in t$$ \overline{t} $$ t ¯ events at the LHC. Among others, these predictions are needed for the precise determination of the top quark mass. The extension of our results to other processes, like open or associated B and charm production is straightforward. We also explore the prospects for extracting heavy flavor fragmentation functions from LHC data.

scholarly journals NNLO QCD predictions for W+c-jet production at the LHC

2021 ◽  
Vol 2021 (6) ◽  
Author(s):  
Michał Czakon ◽  
Alexander Mitov ◽  
Mathieu Pellen ◽  
Rene Poncelet
Keyword(s):  
Cross Sections ◽  
Strange Quark ◽  
W Boson ◽  
Heavy Flavor ◽  
Hadron Colliders ◽  
Heavy Flavor Production ◽  
Theoretical Predictions ◽  
Complete Set ◽  
First Time

Abstract We study the production of a W boson in association with a c-jet at the LHC. We calculate, for the first time, the complete set of NNLO QCD corrections to the dominant CKM-diagonal contribution to this process. Both signatures, pp → μ+νμjc and pp →$$ {\mu}^{-}{\overline{\nu}}_{\mu }{\mathrm{j}}_c $$ μ − ν ¯ μ j c are considered. We present predictions for fiducial cross sections and differential distributions for each one of the two signatures as well as for their ratio. The theoretical predictions are compared with ATLAS measurements at 7 TeV. The results of this work are essential for the precision description of associated heavy flavor production at hadron colliders and for the determination of the strange-quark content of the proton from LHC data in NNLO QCD.

scholarly journals Physics impact of a precise determination of the top quark mass at an e+e−linear collider

2003 ◽  
Vol 2003 (09) ◽  
pp. 075-075 ◽  
Author(s):  
Sven Heinemeyer ◽  
Sabine Kraml ◽  
Werner Porod ◽  
Georg Weiglein
Keyword(s):  
Top Quark ◽  
Quark Mass ◽  
Linear Collider ◽  
Precise Determination ◽  
Top Quark Mass

scholarly journals The Cretaceous-Paleogene boundary in turbiditic deposits identified to the bed: a case study from the Skole Nappe (Outer Carpathians, southern Poland)

2011 ◽  
Vol 62 (4) ◽  
pp. 333-343 ◽  
Author(s):  
M. Gasiński ◽  
Alfred Uchman
Keyword(s):  
Precise Determination ◽  
Thrust Sheet ◽  
Southern Poland ◽  
The Carpathians ◽  
Early Paleocene ◽  
Outer Carpathians ◽  
First Time

The Cretaceous-Paleogene boundary in turbiditic deposits identified to the bed: a case study from the Skole Nappe (Outer Carpathians, southern Poland)The Cretaceous-Paleogene (K-T) boundary has been recognized in turbiditic sediments of the Ropianka Formation in the Skole Nappe (Bąkowiec section) on the basis of planktonic foraminiferids with an accuracy of 40 cm. Such precise determination of the K-T boundary for the first time in the Carpathians and in turbiditic flysch sediments in general was possible due to the successive occurrence of the Early Paleocene planktonic taxa of the P1 Zone above the latest MaastrichtianAbathomphalus mayaroensisZone with theRacemiguembelina fructicosaSubzone. The trends in composition of the latest Maastrichtian foraminiferal assemblages are similar to the Gaj section from the adjacent thrust sheet, probably due to the influence of the same paleoenvironmental factors.

Novel electrochemical fingerprinting methods for the precise determination of Ptshell coverage on Rucore nanoparticles

2014 ◽  
Vol 50 (78) ◽  
pp. 11558-11561 ◽  
Author(s):  
Ehab N. El Sawy ◽  
Hany A. El-Sayed ◽  
Viola I. Birss
Keyword(s):  
Precise Determination ◽  
Oxide Formation ◽  
Electronic Interactions ◽  
Co Stripping ◽  
Two Phases ◽  
First Time ◽  
Fingerprinting Methods ◽  
Core Nanoparticles

The electrochemical signatures of Ru oxide formation and CO stripping were used, for the first time, to determine the Pt shell coverage (from 0–2 monolayers) on Ru core nanoparticles, also revealing the chemical and electronic interactions that exist between these two phases.

scholarly journals HIGGS PARTICLES AT FUTURE HADRON AND ELECTRON-POSITRON COLLIDERS

1995 ◽  
Vol 10 (01) ◽  
pp. 1-63 ◽  
Author(s):  
A. DJOUADI
Keyword(s):  
Top Quark ◽  
Quark Mass ◽  
High Energy ◽  
High Energy Electron ◽  
Hadron Colliders ◽  
Top Quark Mass ◽  
Supersymmetric Extension ◽  
Fundamental Properties ◽  
Electron Positron ◽  
The Standard Model

The prospects for discovering Higgs particles and studying their fundamental properties at future high-energy electron-positron and hadron colliders are reviewed. Both the Standard Model Higgs boson and the Higgs particles of its minimal supersymmetric extension are discussed. We update various results by taking into account the new value of the top-quark mass obtained by the CDF Collaboration, and by including radiative corrections, some of which have been calculated only recently.

PRECISE DETERMINATION OF BACKBONE STRUCTURE AND CONDUCTIVITY OF 3D PERCOLATION NETWORKS BY THE DIRECT ELECTRIFYING ALGORITHM

2009 ◽  
Vol 20 (03) ◽  
pp. 423-433 ◽  
Author(s):  
CHUNYU LI ◽  
TSU-WEI CHOU
Keyword(s):  
Efficient Algorithm ◽  
Precise Determination ◽  
Scaling Exponents ◽  
Resistor Network ◽  
Backbone Structure ◽  
Definition Of ◽  
First Time ◽  
Good Agreement

This paper confirms the applicability of a newly developed efficient algorithm, the direct electrifying method, for identifying backbone for 3D site and bond percolating networks. This algorithm is based on the current-carrying definition of backbone and carried out on the predetermined spanning cluster, which is assumed to be a resistor network. The scaling exponents so obtained for backbone mass, red bonds, and conductivity are in very good agreement with some existing results. The perfectly balanced bonds in 3D backbone structures are predicted first time to be 0.00179 ± 0.00009 and 0.00604 ± 0.00008 of the backbone mass for bond and site percolations, respectively.

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