Search for pair production of heavy vector-like quarks decaying into high-p T W bosons and top quarks in the lepton-plus-jets final state in pp collisions at √s=13 TeV with the ATLAS detector

The ATLAS collaboration, A. G. Bogdanchikov, Василий Федорович Казанин, Дмитрий Александрович Максимов, Сергей Владимирович Пелеганчук, Павел Сергеевич Подберёзко, Ольга Леонардовна Резанова, Андрей Михайлович Сухарев

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

20 Цитирования (Scopus)

Аннотация

A search is presented for the pair production of heavy vector-like B quarks, primarily targeting B quark decays into a W boson and a top quark. The search is based on 36.1 fb−1 of pp collisions at s=13 TeV recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. Data are analysed in the lepton-plus-jets final state, characterised by a high-transverse-momentum isolated electron or muon, large missing transverse momentum, and multiple jets, of which at least one is b-tagged. No significant deviation from the Standard Model expectation is observed. The 95% confidence level lower limit on the B mass is 1350 GeV assuming a 100% branching ratio to Wt. In the SU(2) singlet scenario, the lower mass limit is 1170 GeV. The 100% branching ratio limits are found to be also applicable to heavy vector-like X production, with charge +5/3, that decay into Wt. This search is also sensitive to a heavy vector-like B quark decaying into other final states (Zb and Hb) and thus mass limits on B production are set as a function of the decay branching ratios.[Figure not available: see fulltext.].

Язык оригиналаанглийский
Номер статьи48
Число страниц41
ЖурналJournal of High Energy Physics
Том2018
Номер выпуска8
DOI
СостояниеОпубликовано - 1 авг 2018

Предметные области OECD FOS+WOS

  • 1.03 ФИЗИЧЕСКИЕ НАУКИ И АСТРОНОМИЯ

Fingerprint

Подробные сведения о темах исследования «Search for pair production of heavy vector-like quarks decaying into high-p T W bosons and top quarks in the lepton-plus-jets final state in pp collisions at √s=13 TeV with the ATLAS detector». Вместе они формируют уникальный семантический отпечаток (fingerprint).

Цитировать