Search for the standard model Higgs boson produced in association with top quarks and decaying into a b￣b pair in pp collisions at √s =13 TeV with the ATLAS detector

機関リポジトリ 機関リポジトリ (HANDLE) オープンアクセス

書誌事項

公開日
2018-04
資源種別
journal article
権利情報
  • c 2018 CERN, for the ATLAS Collaboration
  • 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.
公開者
American Physical Society

この論文をさがす

説明

A search for the standard model Higgs boson produced in association with a top-quark pair, t￣tH, is presented. The analysis uses 36.1??fb?1 of pp collision data at √s=13??TeV collected with the ATLAS detector at the Large Hadron Collider in 2015 and 2016. The search targets the H→b￣b decay mode. The selected events contain either one or two electrons or muons from the top-quark decays, and are then categorized according to the number of jets and how likely these are to contain b-hadrons. Multivariate techniques are used to discriminate between signal and background events, the latter being dominated by t￣t+jets production. For a Higgs boson mass of 125 GeV, the ratio of the measured t￣tH signal cross-section to the standard model expectation is found to be μ=0.84+0.64?0.61. A value of μ greater than 2.0 is excluded at 95% confidence level (C.L.) while the expected upper limit is μ<1.2 in the absence of a t￣tH signal.

収録刊行物

  • Physical review D

    Physical review D 97 (7), 072016-, 2018-04

    American Physical Society

詳細情報 詳細情報について

問題の指摘

ページトップへ