Search For New Physics İn Events With Two Soft Oppositely Charged Leptons And Missing Transverse Momentum İn Proton–Proton Collisions At ?S=13 TeV
Yükleniyor...
Tarih
2018
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
Özet
A search is presented for new physics in events with two low-momentum, oppositely charged leptons (electrons or muons) and missing transverse momentum in proton-proton collisions at a centre-of-mass energy of 13TeV. The data collected using the CMS detector at the LHC correspond to an integrated luminosity of 35.9fb?1. The observed event yields are consistent with the expectations from the standard model. The results are interpreted in terms of pair production of charginos and neutralinos ( ?±1and ?02) with nearly degenerate masses, as expected in natural supersymmetry models with light higgsinos, as well as in terms of the pair production of top squarks ( t), when the lightest neutralino and the top squark have similar masses. At 95% confidence level, wino-like ?±1/ ?02masses are excluded up to 230GeVfor a mass difference of 20GeVrelative to the lightest neutralino. In the higgsino-like model, masses are excluded up to 168GeVfor the same mass difference. For tpair production, top squark masses up to 450GeVare excluded for a mass difference of 40GeVrelative to the lightest neutralino.
Açıklama
Anahtar Kelimeler
CMS, SUSY, LEPTONS, COMPRESSED, MİSSİNG ENERGY
Kaynak
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
Sayı
Künye
Physics Letters B 782 (2018) 440–467
