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Elementary Particles and Fields and String Theory

University of Massachusetts Amherst

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Articles 1 - 3 of 3

Full-Text Articles in Physics

Search For Pair Production Of Third-Generation Scalar Leptoquarks Decaying Into A Top Quark And A Τ-Lepton In Pp Collisions At S√ = 13 Tev With The Atlas Detector, Georges Aad, Braden Abbott, Dale C. Abbott, Adam Abed Abud, Kira Abeling, Dale K. Abhayasinghe, Syed H. Abidi, Ossama S. Abouzeid, Nicola L. Abraham, Halina Abramowicz Jan 2021

Search For Pair Production Of Third-Generation Scalar Leptoquarks Decaying Into A Top Quark And A Τ-Lepton In Pp Collisions At S√ = 13 Tev With The Atlas Detector, Georges Aad, Braden Abbott, Dale C. Abbott, Adam Abed Abud, Kira Abeling, Dale K. Abhayasinghe, Syed H. Abidi, Ossama S. Abouzeid, Nicola L. Abraham, Halina Abramowicz

Physics Department Faculty Publication Series

A search for pair production of third-generation scalar leptoquarks decaying into a top quark and a tau-lepton is presented. The search is based on a dataset of pp collisions at root s = 13 TeV recorded with the ATLAS detector during Run 2 of the Large Hadron Collider, corresponding to an integrated luminosity of 139 fb(-1). Events are selected if they have one light lepton (electron or muon) and at least one hadronically decaying tau-lepton, or at least two light leptons. In addition, two or more jets, at least one of which must be identified as containing b-hadrons, are required. …


Search For Doubly And Singly Charged Higgs Bosons Decaying Into Vector Bosons In Multi-Lepton Final States With The Atlas Detector Using Proton-Proton Collisions At √ S= 13 Tev, Georges Aad, Braden Abbott, Dale C. Abbott, Adam Abed Abud, Kira Abeling, Deshan K. Abhayasinghe, Syed H. Abidi, Ossama S. Alexander Abouzeid, Nicola L. Abraham, Halina Abramowicz Jan 2021

Search For Doubly And Singly Charged Higgs Bosons Decaying Into Vector Bosons In Multi-Lepton Final States With The Atlas Detector Using Proton-Proton Collisions At √ S= 13 Tev, Georges Aad, Braden Abbott, Dale C. Abbott, Adam Abed Abud, Kira Abeling, Deshan K. Abhayasinghe, Syed H. Abidi, Ossama S. Alexander Abouzeid, Nicola L. Abraham, Halina Abramowicz

Physics Department Faculty Publication Series

A search for charged Higgs bosons decaying into (WW +/-)-W-+/- or W(+/-)Z bosons is performed, involving experimental signatures with two leptons of the same charge, or three or four leptons with a variety of charge combinations, missing transverse momentum and jets. A data sample of proton-proton collisions at a centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the Large Hadron Collider between 2015 and 2018 is used. The data correspond to a total integrated luminosity of 139 fb(-1). The search is guided by a type-II seesaw model that extends the scalar sector of the Standard Model with …


Search For Charged Higgs Bosons Decaying Into A Top Quark And A Bottom Quark At √ S= 13 Tev With The Atlas Detector, Georges Aad, Braden Abbott, Dale C. Abbott, Adam Abed Abud, Kira Abeling, Deshan K. Abhayasinghe, Syed H. Abidi, Ossama S. Alexander Abouzeid, Nicola L. Abraham, Halina Abramowicz Jan 2021

Search For Charged Higgs Bosons Decaying Into A Top Quark And A Bottom Quark At √ S= 13 Tev With The Atlas Detector, Georges Aad, Braden Abbott, Dale C. Abbott, Adam Abed Abud, Kira Abeling, Deshan K. Abhayasinghe, Syed H. Abidi, Ossama S. Alexander Abouzeid, Nicola L. Abraham, Halina Abramowicz

Physics Department Faculty Publication Series

A search for charged Higgs bosons decaying into a top quark and a bottom quark is presented. The data analysed correspond to 139 fb(-1) of proton-proton collisions at root s = 13TeV, recorded with the ATLAS detector at the LHC. The production of a heavy charged Higgs boson in association with a top quark and a bottom quark, pp -> tbH(+) -> tbtb, is explored in the H+ mass range from 200 to 2000 GeV using final states with jets and one electron or muon. Events are categorised according to the multiplicity of jets and b-tagged jets, and multivariate analysis …