Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10390920" target="_blank" >RIV/00216208:11320/18:10390920 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/18:00500757 RIV/68407700:21220/18:00328713 RIV/68407700:21340/18:00328713 RIV/68407700:21670/18:00328713 RIV/61989592:15310/18:73587455
Result on the web
<a href="https://doi.org/10.1103/PhysRevD.97.072003" target="_blank" >https://doi.org/10.1103/PhysRevD.97.072003</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.97.072003" target="_blank" >10.1103/PhysRevD.97.072003</a>
Alternative languages
Result language
angličtina
Original language name
Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector
Original language description
A search for the associated production of the Higgs boson with a top quark pair ((tt) over barH) 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 root s = 13 TeV at the Large Hadron Collider. Higgs boson decays to WW*, tau tau, 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 GeVand 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 (tt) over barH production cross section is sot (tt) over barH) = 790(-210)(+230) fb, in agreement with the Standard Model prediction of 507(-50)(+35) fb. The combination of this result with other t <overline> tH searches from the ATLAS experiment using the Higgs boson decay modes to b (b) over bar, gamma gamma and ZZ* -> 4l, has an observed significance of 4.2 standard deviations, compared to an expectation of 3.8 standard deviations. This provides evidence for the (tt) over barH production mode.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review D
ISSN
2470-0010
e-ISSN
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Volume of the periodical
97
Issue of the periodical within the volume
7
Country of publishing house
US - UNITED STATES
Number of pages
44
Pages from-to
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UT code for WoS article
000429456900001
EID of the result in the Scopus database
2-s2.0-85046831163