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Search for direct third-generation squark pair production in final states with missing transverse momentum and two b-jets in vs = 8 TeV pp collisions with the ATLAS detector

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posted on 2023-06-08, 17:50 authored by Iacopo Vivarelli, Fabrizio SalvatoreFabrizio Salvatore, Antonella De SantoAntonella De Santo, T Potter, C Chavez Barajas, Alessandro CerriAlessandro Cerri, K Suruliz, U De Sanctis, Mark SuttonMark Sutton, et al., ATLAS Collaboration
The results of a search for pair production of supersymmetric partners of the Standard Model third-generation quarks are reported. This search uses 20.1 fb-1 of pp collisions at sqrt{s}=8 TeV collected by the ATLAS experiment at the Large Hadron Collider. The lightest bottom and top squarks (b1 and t1 respectively) are searched for in a final state with large missing transverse momentum and two jets identified as originating from b-quarks. No excess of events above the expected level of Standard Model background is found. The results are used to set upper limits on the visible cross section for processes beyond the Standard Model. Exclusion limits at the 95% confidence level on the masses of the third-generation squarks are derived in phenomenological supersymmetric R-parity-conserving models in which either the bottom or the top squark is the lightest squark. The b1 is assumed to decay via b1->b chi0 and the t via t1->b chipm, with undetectable products of the subsequent decay of the chipm due to the small mass splitting between the chipm and the chi0.

History

Publication status

  • Published

File Version

  • Published version

Journal

Journal of High Energy Physics

ISSN

1029-8479

Publisher

Springer Verlag

Volume

1310

Page range

189

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2014-07-16

First Open Access (FOA) Date

2014-07-16

First Compliant Deposit (FCD) Date

2014-07-16

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