Identification of high transverse momentum top quarks in pp collisions at √s = 8 TeV with the ATLAS detector

Mullier, Geoffrey; Haug, Sigve; Weber, Michael; Meloni, Federico; Cervelli, Alberto; Beck, Hans Peter; Stucci, Stefania; Ereditato, Antonio (2016). Identification of high transverse momentum top quarks in pp collisions at √s = 8 TeV with the ATLAS detector. Journal of High Energy Physics, 2016(6) Springer 10.1007/JHEP06(2016)093

[img]
Preview
Text
art%3A10.1007%2FJHEP06%282016%29093.pdf - Published Version
Available under License Creative Commons: Attribution (CC-BY).

Download (8MB) | Preview

This paper presents studies of the performance of several jet-substructure techniques, which are used to identify hadronically decaying top quarks with high transverse momentum contained in large-radius jets. The efficiency of identifying top quarks is measured using a sample of top-quark pairs and the rate of wrongly identifying jets from other quarks or gluons as top quarks is measured using multijet events collected with the ATLAS experiment in 20.3 fb⁻¹ of 8 TeV proton-proton collisions at the Large Hadron Collider. Predictions from Monte Carlo simulations are found to provide an accurate description of the performance. The techniques are compared in terms of signal efficiency and background rejection using simulations, covering a larger range in jet transverse momenta than accessible in the dataset. Additionally, a novel technique is developed that is optimized to reconstruct top quarks in events with many jets.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Haug, Sigve; Weber, Michael and Beck, Hans Peter

Subjects:

500 Science > 530 Physics
500 Science > 510 Mathematics

ISSN:

1029-8479

Publisher:

Springer

Language:

English

Submitter:

Annette Krebs-Wegenast

Date Deposited:

08 Aug 2017 13:22

Last Modified:

13 Aug 2017 02:15

Publisher DOI:

10.1007/JHEP06(2016)093

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwähnt.

BORIS DOI:

10.7892/boris.99967

URI:

https://boris.unibe.ch/id/eprint/99967

Actions (login required)

Edit item Edit item
Provide Feedback