Search for Dark Matter Particles Produced in Association with a Top Quark Pair at ? s = 13 TeV
Yükleniyor...
Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
The CMS Collaboration
Erişim Hakkı
Özet
A search is performed for dark matter particles produced in association with a top quark pair in proton-proton collisions at ? s= 13?TeV. The data correspond to an integrated luminosity of 35.9?fb?1 recorded by the CMS detector at the LHC. No significant excess over the standard model expectation is observed. The results are interpreted using simplified models of dark matter production via spin-0 mediators that couple to dark matter particles and to standard model quarks, providing constraints on the coupling strength between the mediator and the quarks. These are the most stringent collider limits to date for scalar mediators, and the most stringent for pseudoscalar mediators at low masses.
Açıklama
Anahtar Kelimeler
Particle dark matter, Particle production, Top quark, Hadron colliders
Kaynak
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
Sayı
Künye
Physical Review Letters 122, 011803 (2019)
