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...
Küçük Resim

Tarih

2018

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

Q2

Scopus Q Değeri

Q1

Cilt

Sayı

Künye

Physics Letters B 782 (2018) 440–467