TY - JOUR

T1 - Search for bottom squark pair production in proton–proton collisions at √s=13 TeV with the ATLAS detector

AU - Barton, Adam Edward

AU - Beattie, Michael

AU - Bertram, Iain Alexander

AU - Borissov, Guennadi

AU - Bouhova-Thacker, Evelina Vassileva

AU - Cheatham, Sue

AU - Dearnaley, William

AU - Fox, Harald

AU - Grimm, Kathryn Ann Tschann

AU - Henderson, Robert Charles William

AU - Hughes, Gareth

AU - Jones, Roger William Lewis

AU - Kartvelishvili, Vakhtang

AU - Long, Robin Eamonn

AU - Love, Peter Allan

AU - Muenstermann, Daniel Matthias Alfred

AU - Parker, Adam Jackson

AU - Skinner, Malcolm

AU - Smizanska, Maria

AU - Walder, James William

AU - Wharton, Andy

AU - The ATLAS collaboration

PY - 2016/10/1

Y1 - 2016/10/1

N2 - The result of a search for pair production of the supersymmetric partner of the Standard Model bottom quark (b˜ 1) 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 bquarks. No excess above the expected Standard Model background yield is observed. Exclusion limits at 95 % confi- dence level on the mass of the bottom squark are derived in phenomenological supersymmetric R-parity-conserving models in which the b˜ 1 is the lightest squark and is assumed to decay exclusively via b˜ 1 → bχ˜ 0 1 , where χ˜ 0 1 is the lightest neutralino. The limits significantly extend previous results; bottom squark masses up to 800 (840) GeV are excluded for the χ˜ 0 1 mass below 360 (100) GeV whilst differences in mass above 100 GeV between the b˜ 1 and the χ˜ 0 1 are excluded up to a b˜ 1 mass of 500 GeV.

AB - The result of a search for pair production of the supersymmetric partner of the Standard Model bottom quark (b˜ 1) 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 bquarks. No excess above the expected Standard Model background yield is observed. Exclusion limits at 95 % confi- dence level on the mass of the bottom squark are derived in phenomenological supersymmetric R-parity-conserving models in which the b˜ 1 is the lightest squark and is assumed to decay exclusively via b˜ 1 → bχ˜ 0 1 , where χ˜ 0 1 is the lightest neutralino. The limits significantly extend previous results; bottom squark masses up to 800 (840) GeV are excluded for the χ˜ 0 1 mass below 360 (100) GeV whilst differences in mass above 100 GeV between the b˜ 1 and the χ˜ 0 1 are excluded up to a b˜ 1 mass of 500 GeV.

U2 - 10.1140/epjc/s10052-016-4382-4

DO - 10.1140/epjc/s10052-016-4382-4

M3 - Journal article

VL - 2016

JO - European Physical Journal C: Particles and Fields

JF - European Physical Journal C: Particles and Fields

SN - 1434-6044

IS - 10

M1 - 547

ER -