Search for Dark Matter Produced in Association with Heavy-Flavor Quark Pairs in Proton-Proton Collisions at √s = 13 TeV

European Physical Journal C 2017
CERN international group of authors, Viesturs Veckalns

A search is presented for an excess of events with heavy-flavor quark pairs (tt¯ and bb¯) and a large imbalance in transverse momentum in data from proton–proton collisions at a center-of-mass energy of 13TeV. The data correspond to an integrated luminosity of 2.2fb-1 collected with the CMS detector at the CERN LHC. No deviations are observed with respect to standard model predictions. The results are used in the first interpretation of dark matter production in tt¯ and bb¯ final states in a simplified model. This analysis is also the first to perform a statistical combination of searches for dark matter produced with different heavy-flavor final states. The combination provides exclusions that are stronger than those achieved with individual heavy-flavor final states.

DOI
10.1140/epjc/s10052-017-5317-4
Hipersaite
https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-017-5317-4

international group of authors, C., Veckalns, V. Search for Dark Matter Produced in Association with Heavy-Flavor Quark Pairs in Proton-Proton Collisions at √s = 13 TeV. European Physical Journal C, 2017, Vol.77, No.12, 1.-10.lpp. ISSN 1434-6044. Pieejams: doi:10.1140/epjc/s10052-017-5317-4

Publikācijas valoda
English (en)