Measurement of the c-jet mistagging efficiency in tt¯ events using pp collision data at √s = 13 TeV collected with the ATLAS detector

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F22%3A00561681" target="_blank" >RIV/68378271:_____/22:00561681 - isvavai.cz</a>

Result on the web

<a href="https://hdl.handle.net/11104/0337245" target="_blank" >https://hdl.handle.net/11104/0337245</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-021-09843-w" target="_blank" >10.1140/epjc/s10052-021-09843-w</a>

Result language

angličtina

Original language name

Measurement of the c-jet mistagging efficiency in tt¯ events using pp collision data at √s = 13 TeV collected with the ATLAS detector

Original language description

A technique is presented to measure the efficiency with which c-jets are mistagged as b-jets (mistagging efficiency) using ttˉttˉ events, where one of the W bosons decays into an electron or muon and a neutrino and the other decays into a quark–antiquark pair. The measurement utilises the relatively large and known W→csW→cs branching ratio, which allows a measurement to be made in an inclusive c-jet sample. The data sample used was collected by the ATLAS detector at s=13s ​=13 TeVTeV and corresponds to an integrated luminosity of 139 fb−1−1. Events are reconstructed using a kinematic likelihood technique which selects the mapping between jets and ttˉttˉ decay products that yields the highest likelihood value. The distribution of the b-tagging discriminant for jets from the hadronic W decays in data is compared with that in simulation to extract the mistagging efficiency as a function of jet transverse momentum.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10303 - Particles and field physics

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

European Physical Journal C

ISSN

1434-6044

e-ISSN

1434-6052

Volume of the periodical

82

Issue of the periodical within the volume

1

Country of publishing house

DE - GERMANY

Number of pages

27

Pages from-to

95

UT code for WoS article

000750507100004

EID of the result in the Scopus database

2-s2.0-85124839192