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Aaboud2017_Article_SearchForAScalarPartnerOfTheTo.pdf (1.2 MB)

Search for a scalar partner of the top quark in the jets plus missing transverse momentum final state at vs=13 TeV with the ATLAS detector

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Version 2 2023-06-12, 08:43
Version 1 2023-06-09, 07:54
journal contribution
posted on 2023-06-12, 08:43 authored by Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Alessandro CerriAlessandro Cerri, C A Chavez Barajas, Antonella De SantoAntonella De Santo, Fabrizio SalvatoreFabrizio Salvatore, I Santoyo Castillo, K Suruliz, Mark SuttonMark Sutton, Iacopo Vivarelli, The ATLAS Collaboration, others
A search for pair production of a scalar partner of the top quark in events with four or more jets plus missing transverse momentum is presented. An analysis of 36.1 fb-1 of v s = 13 TeV proton–proton collisions collected using the ATLAS detector at the LHC yields no significant excess over the expected Standard Model background. To interpret the results a simplified supersymmetric model is used where the top squark is assumed to decay via t˜1 ? t (*)?˜ 0 1 and t˜1 ? b?˜ ± 1 ? bW(*)?˜ 0 1, where ?˜ 0 1 (?˜ ± 1 ) denotes the lightest neutralino (chargino). Exclusion limits are placed in terms of the top-squark and neutralino masses. Assuming a branching ratio of 100% to t?˜ 0 1, top-squark masses in the range 450-950 GeV are excluded for ?˜ 0 1 masses below 160 GeV. In the case where mt˜1 ~ mt + m?˜ 0 1 , top-squark masses in the range 235-590 GeV are excluded.

Funding

ATLAS; G0275; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/I006048/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Journal of High Energy Physics

ISSN

1126-6708

Publisher

Springer Verlag

Issue

12

Volume

2017

Page range

1-55

Article number

a85

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2017-09-14

First Open Access (FOA) Date

2017-09-14

First Compliant Deposit (FCD) Date

2017-09-14

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