• Open Access

Reconstruction of top quark pair dilepton decays in electron-positron collisions

Helenka Casler, Matthew Manganel, Miguel C. N. Fiolhais, Andrea Ferroglia, and António Onofre
Phys. Rev. D 99, 054011 – Published 18 March 2019

Abstract

A new algorithm is presented to perform the full kinematic reconstruction of top quark pair events produced at future electron-positron colliders in the case of dilepton decays of the W bosons to electrons or muons. The momentum components of the undetected neutrino and antineutrino in the event are reconstructed by employing several kinematic conditions comprising a nonlinear system of six equations. This system is solved numerically using two independent methods, and the selection of the best candidate real solution for each event is determined by a likelihood discriminant. Results are presented for several reconstructed kinematic properties of the W± bosons, top (and antitop) quarks using generator level information produced at leading order.

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  • Received 6 February 2019

DOI:https://doi.org/10.1103/PhysRevD.99.054011

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Particles & Fields

Authors & Affiliations

Helenka Casler1,2, Matthew Manganel3, Miguel C. N. Fiolhais4,5, Andrea Ferroglia1,6, and António Onofre7

  • 1The Graduate School and University Center, The City University of New York, 365 Fifth Avenue, New York, New York 10016, USA
  • 2Department of Earth and Physical Sciences, York College, City University of New York, 94—20 Guy R. Brewer Blvd., Jamaica, New York 11451, USA
  • 3Courant Institute of Mathematical Sciences, New York University, 251 Mercer Street, New York, New York 10012, USA
  • 4Science Department, Borough of Manhattan Community College, City University of New York, 199 Chambers Street, New York, New York 10007, USA
  • 5LIP, Departamento de Física, Universidade de Coimbra, 3004-516 Coimbra, Portugal
  • 6Physics Department, New York City College of Technology, The City University of New York, 300 Jay Street, Brooklyn, New York 11201, USA
  • 7Departamento de Física, Universidade do Minho, 4710-057 Braga, Portugal

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Issue

Vol. 99, Iss. 5 — 1 March 2019

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