Search for bottom squark pair production in proton–proton collisions at √s=13 TeV with the ATLAS detector

Mullier, Geoffrey; Haug, Sigve; Weber, Michael; Meloni, Federico; Cervelli, Alberto; Beck, Hans Peter; Stucci, Stefania; Ereditato, Antonio (2016). Search for bottom squark pair production in proton–proton collisions at √s=13 TeV with the ATLAS detector. European physical journal. C - particles and fields, 76(10) EDP Sciences 10.1140/epjc/s10052-016-4382-4

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The result of a search for pair production of the supersymmetric partner of the Standard Model bottom quark (b₁) is reported. The search uses 3.2 fb⁻¹ of pp collisions at √s=13 TeV collected by the ATLAS experiment at the Large Hadron Collider in 2015. Bottom squarks are searched for in events containing large missing transverse momentum and exactly two jets identified as originating from b-quarks. No excess above the expected Standard Model background yield is observed. Exclusion limits at 95% confidence level on the mass of the bottom squark are derived in phenomenological supersymmetric R -parity-conserving models in which the b1 is the lightest squark and is assumed to decay exclusively via b1→bχ01, where χ 01 is the lightest neutralino. The limits significantly extend previous results; bottom squark masses up to 800 (840) GeV are excluded for the χ01 mass below 360 (100) GeV whilst differences in mass above 100 GeV between the b1 and the χ01 are excluded up to a b1 mass of 500 GeV.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Haug, Sigve; Weber, Michael and Beck, Hans Peter

Subjects:

500 Science > 530 Physics
500 Science > 510 Mathematics

ISSN:

1434-6044

Publisher:

EDP Sciences

Language:

English

Submitter:

Annette Krebs-Wegenast

Date Deposited:

26 Jul 2017 13:31

Last Modified:

30 Jul 2017 02:15

Publisher DOI:

10.1140/epjc/s10052-016-4382-4

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwähnt.

BORIS DOI:

10.7892/boris.99939

URI:

https://boris.unibe.ch/id/eprint/99939

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