Combined searches for the production of supersymmetric top quark partners in proton–proton collisions at $$\sqrt{s} = 13\,\text {Te}\text {V} $$ s = 13 Te
Name
10052_2021_Article_9721.pdf
Size
3.32 MB
Format
Adobe PDF
Checksum (MD5)
b8ef08d8daa9d49a2fa1e7455eb0973d
Author(s)
Tumasyan, A.
Adam, W.
Andrejkovic, J. W.
Bergauer, T.
Chatterjee, S.
Dragicevic, M.
Del Valle, A. E.
Frühwirth, R.
Jeitler, M.
Krammer, N.
Date Issued
November 3, 2021
Publisher
Springer Berlin Heidelberg
Citation
The European Physical Journal C. 2021 Nov 03;81(11):970
Version
Final published version
Abstract
Abstract
A combination of searches for top squark pair production using proton–proton collision data at a center-of-mass energy of 13
$$\,\text {Te}\text {V}$$
Te
at the CERN LHC, corresponding to an integrated luminosity of 137
$$\,\text {fb}^{-1}$$
fb
-
1
collected by the CMS experiment, is presented. Signatures with at least 2 jets and large missing transverse momentum are categorized into events with 0, 1, or 2 leptons. New results for regions of parameter space where the kinematical properties of top squark pair production and top quark pair production are very similar are presented. Depending on the model, the combined result excludes a top squark mass up to 1325
$$\,\text {Ge}\text {V}$$
Ge
for a massless neutralino, and a neutralino mass up to 700
$$\,\text {Ge}\text {V}$$
Ge
for a top squark mass of 1150
$$\,\text {Ge}\text {V}$$
Ge
. Top squarks with masses from 145 to 295
$$\,\text {Ge}\text {V}$$
Ge
, for neutralino masses from 0 to 100
$$\,\text {Ge}\text {V}$$
Ge
, with a mass difference between the top squark and the neutralino in a window of 30
$$\,\text {Ge}\text {V}$$
Ge
around the mass of the top quark, are excluded for the first time with CMS data. The results of theses searches are also interpreted in an alternative signal model of dark matter production via a spin-0 mediator in association with a top quark pair. Upper limits are set on the cross section for mediator particle masses of up to 420
$$\,\text {Ge}\text {V}$$
Ge
.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1140/epjc/s10052-021-09721-5
