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Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector
http://hdl.handle.net/2241/00151741
http://hdl.handle.net/2241/001517416875f1ae-debd-4b22-97c6-cb2118c36aa5
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
PRD_97-7-072003 (1.6 MB)
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| Item type | Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-05-21 | |||||
| タイトル | ||||||
| タイトル | Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | 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 |
ATLA Collaboration
× ATLA Collaboration× "Har, , K."× Kim, S.H.× Okawa, H.× Sato, K.× Ukegawa, F. |
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| 著者別名 |
原, 和彦
× 原, 和彦× 金, 信弘× 大川, 英希× 佐藤, 構二× 受川, 史彦 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | A search for the associated production of the Higgs boson with a top quark pair (t￣tH) is reported. The search is performed in multilepton final states using a data set corresponding to an integrated luminosity of 36.1??fb?1 of proton-proton collision data recorded by the ATLAS experiment at a center-of-mass energy √s=13??TeV at the Large Hadron Collider. Higgs boson decays to WW?, ττ, and ZZ? are targeted. Seven final states, categorized by the number and flavor of charged-lepton candidates, are examined for the presence of the Standard Model Higgs boson with a mass of 125 GeV and a pair of top quarks. An excess of events over the expected background from Standard Model processes is found with an observed significance of 4.1 standard deviations, compared to an expectation of 2.8 standard deviations. The best fit for the t￣tH production cross section is σ(t￣tH)=790+230?210??fb, in agreement with the Standard Model prediction of 507+35?50??fb. The combination of this result with other t￣tH searches from the ATLAS experiment using the Higgs boson decay modes to b￣b, γγ and ZZ?→4?, has an observed significance of 4.2 standard deviations, compared to an expectation of 3.8 standard deviations. This provides evidence for the t￣tH production mode. | |||||
| 言語 | en | |||||
| 書誌情報 |
en : Physical review D 巻 97, 号 7, p. 072003, 発行日 2018-04 |
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| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 2470-0010 | |||||
| NCID | ||||||
| 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.97.072003 | |||||
| 権利情報 | ||||||
| 言語 | en | |||||
| 権利情報 | c 2018 CERN, for the ATLAS Collaboration | |||||
| 権利情報 | ||||||
| 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 | ||||||
| 出版者 | American Physical Society | |||||
| 言語 | en | |||||
