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Search for top-philic heavy resonances in pp collisions at s=13 TeV with the ATLAS detector.

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Title: Search for top-philic heavy resonances in pp collisions at s=13 TeV with the ATLAS detector.
Authors: ATLAS Collaboration (AUTHOR), Aad, G.1 (AUTHOR), Abbott, B.2 (AUTHOR), Abeling, K.3 (AUTHOR), Abicht, N. J.4 (AUTHOR), Abidi, S. H.5 (AUTHOR), Aboulhorma, A.6 (AUTHOR), Abramowicz, H.7 (AUTHOR), Abreu, H.8 (AUTHOR), Abulaiti, Y.9 (AUTHOR), Abusleme Hoffman, A. C.10 (AUTHOR), Acharya, B. S.11,12,13 (AUTHOR), Adam Bourdarios, C.14 (AUTHOR), Adamczyk, L.15 (AUTHOR), Adamek, L.16 (AUTHOR), Addepalli, S. V.17 (AUTHOR), Addison, M. J.18 (AUTHOR), Adelman, J.19 (AUTHOR), Adiguzel, A.20 (AUTHOR), Adorni, S.21 (AUTHOR)
Source: European Physical Journal C -- Particles & Fields. Feb2024, Vol. 84 Issue 2, p1-32. 32p.
Subjects: Proton-proton interactions, Large Hadron Collider, Resonance, Top quarks, Branching ratios, Z bosons
Abstract: A search for the associated production of a heavy resonance with a top-quark or a top-antitop-quark pair, and decaying into a t t ¯ pair is presented. The search uses the data recorded by the ATLAS detector in pp collisions at s = 13 TeV at the Large Hadron Collider during the years 2015–2018, corresponding to an integrated luminosity of 139 fb - 1 . Events containing exactly one electron or muon are selected. The two hadronically decaying top quarks from the resonance decay are reconstructed using jets clustered with a large radius parameter of R = 1 . The invariant mass spectrum of the two top quark candidates is used to search for a resonance signal in the range of 1.0 TeV to 3.2 TeV . The presence of a signal is examined using an approach with minimal model dependence followed by a model-dependent interpretation. No significant excess is observed over the background expectation. Upper limits on the production cross section times branching ratio at 95% confidence level are provided for a heavy Z ′ boson based on a simplified model, for Z ′ mass between 1.0 TeV and 3.0 TeV . The observed (expected) limits range from 21 (14) fb to 119 (86) fb depending on the choice of model parameters. [ABSTRACT FROM AUTHOR]
Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Search for top-philic heavy resonances in pp collisions at s=13 TeV with the ATLAS detector.
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  Data: <searchLink fieldCode="AR" term="%22ATLAS+Collaboration%22">ATLAS Collaboration</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Aad%2C+G%2E%22">Aad, G.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Abbott%2C+B%2E%22">Abbott, B.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Abeling%2C+K%2E%22">Abeling, K.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Abicht%2C+N%2E+J%2E%22">Abicht, N. J.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Abidi%2C+S%2E+H%2E%22">Abidi, S. H.</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Aboulhorma%2C+A%2E%22">Aboulhorma, A.</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Abramowicz%2C+H%2E%22">Abramowicz, H.</searchLink><relatesTo>7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Abreu%2C+H%2E%22">Abreu, H.</searchLink><relatesTo>8</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Abulaiti%2C+Y%2E%22">Abulaiti, Y.</searchLink><relatesTo>9</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Abusleme+Hoffman%2C+A%2E+C%2E%22">Abusleme Hoffman, A. C.</searchLink><relatesTo>10</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Acharya%2C+B%2E+S%2E%22">Acharya, B. S.</searchLink><relatesTo>11,12,13</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Adam+Bourdarios%2C+C%2E%22">Adam Bourdarios, C.</searchLink><relatesTo>14</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Adamczyk%2C+L%2E%22">Adamczyk, L.</searchLink><relatesTo>15</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Adamek%2C+L%2E%22">Adamek, L.</searchLink><relatesTo>16</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Addepalli%2C+S%2E+V%2E%22">Addepalli, S. V.</searchLink><relatesTo>17</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Addison%2C+M%2E+J%2E%22">Addison, M. J.</searchLink><relatesTo>18</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Adelman%2C+J%2E%22">Adelman, J.</searchLink><relatesTo>19</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Adiguzel%2C+A%2E%22">Adiguzel, A.</searchLink><relatesTo>20</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Adorni%2C+S%2E%22">Adorni, S.</searchLink><relatesTo>21</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22European+Physical+Journal+C+--+Particles+%26+Fields%22">European Physical Journal C -- Particles & Fields</searchLink>. Feb2024, Vol. 84 Issue 2, p1-32. 32p.
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  Data: <searchLink fieldCode="DE" term="%22Proton-proton+interactions%22">Proton-proton interactions</searchLink><br /><searchLink fieldCode="DE" term="%22Large+Hadron+Collider%22">Large Hadron Collider</searchLink><br /><searchLink fieldCode="DE" term="%22Resonance%22">Resonance</searchLink><br /><searchLink fieldCode="DE" term="%22Top+quarks%22">Top quarks</searchLink><br /><searchLink fieldCode="DE" term="%22Branching+ratios%22">Branching ratios</searchLink><br /><searchLink fieldCode="DE" term="%22Z+bosons%22">Z bosons</searchLink>
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  Data: A search for the associated production of a heavy resonance with a top-quark or a top-antitop-quark pair, and decaying into a t t ¯ pair is presented. The search uses the data recorded by the ATLAS detector in pp collisions at s = 13 TeV at the Large Hadron Collider during the years 2015–2018, corresponding to an integrated luminosity of 139 fb - 1 . Events containing exactly one electron or muon are selected. The two hadronically decaying top quarks from the resonance decay are reconstructed using jets clustered with a large radius parameter of R = 1 . The invariant mass spectrum of the two top quark candidates is used to search for a resonance signal in the range of 1.0 TeV to 3.2 TeV . The presence of a signal is examined using an approach with minimal model dependence followed by a model-dependent interpretation. No significant excess is observed over the background expectation. Upper limits on the production cross section times branching ratio at 95% confidence level are provided for a heavy Z ′ boson based on a simplified model, for Z ′ mass between 1.0 TeV and 3.0 TeV . The observed (expected) limits range from 21 (14) fb to 119 (86) fb depending on the choice of model parameters. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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