University of Sussex
Browse
__smbhome.uscs.susx.ac.uk_akj23_Desktop_Thurs 1.pdf (1.86 MB)

Measurements of tt ¯ differential cross-sections of highly boosted top quarks decaying to all-hadronic final states in pp collisions at s v =13 TeV using the ATLAS detector

Download (1.86 MB)
journal contribution
posted on 2023-06-09, 15:49 authored by N L Abraham, Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Alessandro CerriAlessandro Cerri, C A Chavez Barajas, Antonella De SantoAntonella De Santo, Samuel Jones, F Miano, Fabrizio SalvatoreFabrizio Salvatore, I Santoyo Castillo, C Y Shehu, Kate ShawKate Shaw, Thomas StevensonThomas Stevenson, K Suruliz, Mark SuttonMark Sutton, Fabio Tresoldi, Iacopo Vivarelli, E Winkels, O J Winston, The ATLAS Collaboration, others
Measurements are made of differential cross-sections of highly boosted pair-produced top quarks as a function of top-quark and tt ¯ system kinematic observables using proton--proton collisions at a center-of-mass energy of s v =13TeV. The data set corresponds to an integrated luminosity of 36.1 fb -1, recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. Events with two large-radius jets in the final state, one with transverse momentum p T >500 GeV and a second with p T >350 GeV, are used for the measurement. The top-quark candidates are separated from the multijet background using jet substructure information and association with a b -tagged jet. The measured spectra are corrected for detector effects to a particle-level fiducial phase space and a parton-level limited phase space, and are compared to several Monte Carlo simulations by means of calculated ? 2 values. The cross-section for tt ¯ production in the fiducial phase-space region is 292±7 (stat)±76(syst) fb, to be compared to the theoretical prediction of 384±36 fb.

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review D

ISSN

2470-0010

Publisher

American Physical Society

Issue

1

Volume

98

Page range

12003 1-39

Department affiliated with

  • Physics and Astronomy Publications

Research groups affiliated with

  • Experimental Particle Physics Research Group Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2018-11-09

First Open Access (FOA) Date

2018-11-09

First Compliant Deposit (FCD) Date

2018-11-08

Usage metrics

    University of Sussex (Publications)

    Categories

    No categories selected

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC