1 Ocak 2019 Dergi makalesi Açık Erişim

CERN İşbirliği

MARC21 XML

<?xml version='1.0' encoding='UTF-8'?>
<record xmlns="http://www.loc.gov/MARC21/slim">
  <leader>00000nam##2200000uu#4500</leader>
  <datafield tag="909" ind1="C" ind2="O">
    <subfield code="p">user-scoap3-turkiye</subfield>
    <subfield code="o">oai:zenodo.org:106059</subfield>
  </datafield>
  <datafield tag="520" ind1=" " ind2=" ">
    <subfield code="a">&lt;p&gt;A search for four-top-quark production, $t\overline{t}t\overline{t}$, is presented. It is based on proton-proton collision data with a center-of-mass energy $\sqrt{s}=13\text{}\text{}\mathrm{TeV}$ collected by the ATLAS detector at the Large Hadron Collider during the years 2015 and 2016, corresponding to an integrated luminosity of $36.1\text{}\text{}{\mathrm{fb}}^{-1}$. Data are analyzed in both the single-lepton and opposite-sign dilepton channels, characterized by the presence of one or two isolated electrons or muons with high-transverse momentum and multiple jets. A data-driven method is used to estimate the dominant background from top-quark pair production in association with jets. No significant excess above the Standard Model expectation is observed. The result is combined with the previous same-sign dilepton and multilepton searches carried out by the ATLAS Collaboration and an observed (expected) upper limit of 5.3 (2.1) times the four-top-quark Standard Model cross section is obtained at 95% confidence level. Additionally, an upper limit on the anomalous four-top-quark production cross section is set in the context of an effective field theory model.&lt;/p&gt;</subfield>
  </datafield>
  <datafield tag="980" ind1=" " ind2=" ">
    <subfield code="a">publication</subfield>
    <subfield code="b">article</subfield>
  </datafield>
  <datafield tag="540" ind1=" " ind2=" ">
    <subfield code="a">Creative Commons Attribution</subfield>
    <subfield code="u">http://www.opendefinition.org/licenses/cc-by</subfield>
  </datafield>
  <datafield tag="100" ind1=" " ind2=" ">
    <subfield code="a">CERN İşbirliği</subfield>
    <subfield code="u">CERN</subfield>
  </datafield>
  <datafield tag="856" ind1="4" ind2=" ">
    <subfield code="z">md5:8c592989b851f0f57bb50cf97849420a</subfield>
    <subfield code="s">1097154</subfield>
    <subfield code="u">https://aperta.ulakbim.gov.trrecord/106059/files/PhysRevD.99.052009.pdf</subfield>
  </datafield>
  <controlfield tag="005">20210317162408.0</controlfield>
  <datafield tag="260" ind1=" " ind2=" ">
    <subfield code="c">2019-01-01</subfield>
  </datafield>
  <datafield tag="024" ind1=" " ind2=" ">
    <subfield code="a">10.1103/PhysRevD.99.052009</subfield>
    <subfield code="2">doi</subfield>
  </datafield>
  <datafield tag="542" ind1=" " ind2=" ">
    <subfield code="l">open</subfield>
  </datafield>
  <datafield tag="245" ind1=" " ind2=" ">
    <subfield code="a">Search for four-top-quark production in the single-lepton and opposite-sign dilepton final states in $pp$ collisions at $\sqrt{s}=13\text{}\text{}\mathrm{TeV}$ with the ATLAS detector</subfield>
  </datafield>
  <datafield tag="909" ind1="C" ind2="4">
    <subfield code="v">99</subfield>
    <subfield code="p">Physical Review D</subfield>
    <subfield code="n">5</subfield>
  </datafield>
  <datafield tag="650" ind1="1" ind2="7">
    <subfield code="a">cc-by</subfield>
    <subfield code="2">opendefinition.org</subfield>
  </datafield>
  <controlfield tag="001">106059</controlfield>
  <datafield tag="980" ind1=" " ind2=" ">
    <subfield code="a">user-scoap3-turkiye</subfield>
  </datafield>
</record>