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Search for heavy particles decaying into a top-quark pair in the fully hadronic final state in pp collisions at √s=13??TeV with the ATLAS detector
http://hdl.handle.net/2241/00157756
http://hdl.handle.net/2241/001577561a38df2b-fe33-461a-b7f0-85b3ce09665e
名前 / ファイル | ライセンス | アクション |
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PRD_99-9-092004 (1.1 MB)
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Item type | Journal Article(1) | |||||
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公開日 | 2019-09-30 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Search for heavy particles decaying into a top-quark pair in the fully hadronic final state in pp collisions at √s=13??TeV with the ATLAS detector | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
著者 |
原, 和彦
× 原, 和彦× 大川, 英希× 佐藤, 構二× 受川, 史彦× ATLA Collaboration |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A search for new particles decaying into a pair of top quarks is performed using proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider at a center-of-mass energy of √s=13??TeV corresponding to an integrated luminosity of 36.1??fb?1. Events consistent with top-quark pair production and the fully hadronic decay mode of the top quarks are selected by requiring multiple high transverse momentum jets including those containing b-hadrons. Two analysis techniques, exploiting dedicated top-quark pair reconstruction in different kinematic regimes, are used to optimize the search sensitivity to new hypothetical particles over a wide mass range. The invariant mass distribution of the two reconstructed top-quark candidates is examined for resonant production of new particles with various spins and decay widths. No significant deviation from the Standard Model prediction is observed and limits are set on the production cross-section times branching fraction for new hypothetical Z′ bosons, dark-matter mediators, Kaluza-Klein gravitons and Kaluza-Klein gluons. By comparing with the predicted production cross sections, the Z′ boson in the topcolor-assisted-technicolor model is excluded for masses up to 3.1?3.6 TeV, the dark-matter mediators in a simplified framework are excluded in the mass ranges from 0.8 to 0.9 TeV and from 2.0 to 2.2 TeV, and the Kaluza-Klein gluon is excluded for masses up to 3.4 TeV, depending on the decay widths of the particles. | |||||
言語 | en | |||||
書誌情報 |
en : Physical review D 巻 99, 号 9, p. 092004, 発行日 2019-05 |
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ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 2470-0010 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00773624 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1103/PhysRevD.99.092004 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | c 2019 CERN, for the ATLAS Collaboration | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | 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. | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | American Physical Society |