posted on 2016-09-12, 00:00authored byB. Dutta, A. Gurrola, K. Hatakeyama, W. Johns, T. Kamon, P. Sheldon, K. Sinha, S. Wu, Z. Wu
A feasibility study is presented for the search of the lightest bottom squark (sbottom) in a compressed scenario, where its mass difference from the lightest neutralino is 5 GeV. Two separate studies are performed: 1) a final state containing two vector-boson-fusion (VBF)-like tagged jets, missing transverse energy, and zero or one b-tagged jet; and 2) a final state consisting of an initial state radiation jet, missing transverse energy, and at least one b-tagged jet. An analysis of the shape of the missing transverse energy distribution for signal and background is performed in each case, leading to significant improvement over a cut and count analysis, especially after incorporating the consideration of systematic uncertainty and pileup. The shape analysis in the VBF-like tagged jet study leads to a 3σ exclusion potential of sbottoms with mass up to 530(462) GeV for an integrated luminosity of 300 fb-1 at 14 TeV, with 5% systematic uncertainty and PU=0(50).
Funding
This work is supported in part by DOE Grants No. DEFG02-
13ER42020 and No. DE-FG02-12ER41848 and
NSF Award No. PHY-1206044. T. K. was also supported
in part by the Qatar National Research Fund under project
NPRP 5—464—1—080. K. S. is supported by NASA
Astrophysics Theory Grant NNH12ZDA001N. Z.W. is
supported by the National Science Foundation under
Grant No. PHY-1306951.