University Library
  • Login
A gateway to Melbourne's research publications
Minerva Access is the University's Institutional Repository. It aims to collect, preserve, and showcase the intellectual output of staff and students of the University of Melbourne for a global audience.
View Item 
  • Minerva Access
  • Science
  • School of Physics
  • School of Physics - Research Publications
  • View Item
  • Minerva Access
  • Science
  • School of Physics
  • School of Physics - Research Publications
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

    Search for direct production of electroweakinos in final states with one lepton, missing transverse momentum and a Higgs boson decaying into two b-jets in pp collisions at root s=13 TeV with the ATLAS detector

    Thumbnail
    Download
    Published version (2.841Mb)

    Citations
    Scopus
    Web of Science
    Altmetric
    7
    5
    Author
    Aad, G; Abbott, B; Abbott, DC; Abud, AA; Abeling, K; Abhayasinghe, DK; Abidi, SH; AbouZeid, OS; Abraham, NL; Abramowicz, H; ...
    Date
    2020-08-01
    Source Title
    European Physical Journal C: Particles and Fields
    Publisher
    SPRINGER
    University of Melbourne Author/s
    Urquijo, Phillip; Barberio, Luigia; Kubota, Takashi; Taylor, Geoffrey; Milesi, Marco; Ungaro, Francesca Consiglia; Shojaii, Seyed Ruhollah
    Affiliation
    School of Physics
    Metadata
    Show full item record
    Document Type
    Journal Article
    Citations
    Aad, G., Abbott, B., Abbott, D. C., Abud, A. A., Abeling, K., Abhayasinghe, D. K., Abidi, S. H., AbouZeid, O. S., Abraham, N. L., Abramowicz, H., Abulaiti, Y., Abreu, H., Acharya, B. S., Achkar, B., Adachi, S., Adam, L., Bourdarios, C. A., Adamczyk, L., Adamek, L. ,... Zwalinski, L. (2020). Search for direct production of electroweakinos in final states with one lepton, missing transverse momentum and a Higgs boson decaying into two b-jets in pp collisions at root s=13 TeV with the ATLAS detector. EUROPEAN PHYSICAL JOURNAL C, 80 (8), https://doi.org/10.1140/epjc/s10052-020-8050-3.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/252152
    DOI
    10.1140/epjc/s10052-020-8050-3
    Abstract
    <jats:title>Abstract</jats:title> <jats:p>The results of a search for electroweakino pair production <jats:inline-formula><jats:alternatives><jats:tex-math>$$pp \rightarrow \tilde{\chi }^\pm _1 \tilde{\chi }^0_2$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>p</mml:mi><mml:mi>p</mml:mi><mml:mo>→</mml:mo><mml:msubsup><mml:mover><mml:mi>χ</mml:mi><mml:mo>~</mml:mo></mml:mover><mml:mn>1</mml:mn><mml:mo>±</mml:mo></mml:msubsup><mml:msubsup><mml:mover><mml:mi>χ</mml:mi><mml:mo>~</mml:mo></mml:mover><mml:mn>2</mml:mn><mml:mn>0</mml:mn></mml:msubsup></mml:mrow></mml:math></jats:alternatives></jats:inline-formula> in which the chargino (<jats:inline-formula><jats:alternatives><jats:tex-math>$$\tilde{\chi }^\pm _1$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mover><mml:mi>χ</mml:mi><mml:mo>~</mml:mo></mml:mover><mml:mn>1</mml:mn><mml:mo>±</mml:mo></mml:msubsup></mml:math></jats:alternatives></jats:inline-formula>) decays into a <jats:italic>W</jats:italic> boson and the lightest neutralino (<jats:inline-formula><jats:alternatives><jats:tex-math>$$\tilde{\chi }^0_1$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mover><mml:mi>χ</mml:mi><mml:mo>~</mml:mo></mml:mover><mml:mn>1</mml:mn><mml:mn>0</mml:mn></mml:msubsup></mml:math></jats:alternatives></jats:inline-formula>), while the heavier neutralino (<jats:inline-formula><jats:alternatives><jats:tex-math>$$\tilde{\chi }^0_2$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mover><mml:mi>χ</mml:mi><mml:mo>~</mml:mo></mml:mover><mml:mn>2</mml:mn><mml:mn>0</mml:mn></mml:msubsup></mml:math></jats:alternatives></jats:inline-formula>) decays into the Standard Model 125 GeV Higgs boson and a second <jats:inline-formula><jats:alternatives><jats:tex-math>$$\tilde{\chi }^0_1$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mover><mml:mi>χ</mml:mi><mml:mo>~</mml:mo></mml:mover><mml:mn>1</mml:mn><mml:mn>0</mml:mn></mml:msubsup></mml:math></jats:alternatives></jats:inline-formula> are presented. The signal selection requires a pair of <jats:italic>b</jats:italic>-tagged jets consistent with those from a Higgs boson decay, and either an electron or a muon from the <jats:italic>W</jats:italic> boson decay, together with missing transverse momentum from the corresponding neutrino and the stable neutralinos. The analysis is based on data corresponding to 139 <jats:inline-formula><jats:alternatives><jats:tex-math>$$\mathrm {fb}^{-1}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow><mml:mi>fb</mml:mi></mml:mrow><mml:mrow><mml:mo>-</mml:mo><mml:mn>1</mml:mn></mml:mrow></mml:msup></mml:math></jats:alternatives></jats:inline-formula> of <jats:inline-formula><jats:alternatives><jats:tex-math>$$\sqrt{s}=13$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>13</mml:mn></mml:mrow></mml:math></jats:alternatives></jats:inline-formula> TeV <jats:italic>pp</jats:italic> collisions provided by the Large Hadron Collider and recorded by the ATLAS detector. No statistically significant evidence of an excess of events above the Standard Model expectation is found. Limits are set on the direct production of the electroweakinos in simplified models, assuming pure wino cross-sections. Masses of <jats:inline-formula><jats:alternatives><jats:tex-math>$$\tilde{\chi }^{\pm }_{1}/\tilde{\chi }^{0}_{2}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msubsup><mml:mover><mml:mi>χ</mml:mi><mml:mo>~</mml:mo></mml:mover><mml:mn>1</mml:mn><mml:mo>±</mml:mo></mml:msubsup><mml:mo>/</mml:mo><mml:msubsup><mml:mover><mml:mi>χ</mml:mi><mml:mo>~</mml:mo></mml:mover><mml:mn>2</mml:mn><mml:mn>0</mml:mn></mml:msubsup></mml:mrow></mml:math></jats:alternatives></jats:inline-formula> up to 740 GeV are excluded at 95% confidence level for a massless <jats:inline-formula><jats:alternatives><jats:tex-math>$$\tilde{\chi }^{0}_{1}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mover><mml:mi>χ</mml:mi><mml:mo>~</mml:mo></mml:mover><mml:mn>1</mml:mn><mml:mn>0</mml:mn></mml:msubsup></mml:math></jats:alternatives></jats:inline-formula>.</jats:p>

    Export Reference in RIS Format     

    Endnote

    • Click on "Export Reference in RIS Format" and choose "open with... Endnote".

    Refworks

    • Click on "Export Reference in RIS Format". Login to Refworks, go to References => Import References


    Collections
    • Minerva Elements Records [45689]
    • School of Physics - Research Publications [937]
    Minerva AccessDepositing Your Work (for University of Melbourne Staff and Students)NewsFAQs

    BrowseCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects
    My AccountLoginRegister
    StatisticsMost Popular ItemsStatistics by CountryMost Popular Authors