【摘 要】
：
This analysis evaluates the possibility of the search for Dark Matter(DM)particles using events with a Z\'heavy gauge boson and a large missing transverse momentum at the Large Hadron Collider(LHC).We consider the muonic decay of Z\'.The analyzed Mont
【机 构】
：
Centre for theoretical physics,The British University in Egypt,Cairo,Egypt;Centre for theoretical ph
论文部分内容阅读
This analysis evaluates the possibility of the search for Dark Matter(DM)particles using events with a Z\'heavy gauge boson and a large missing transverse momentum at the Large Hadron Collider(LHC).We consider the muonic decay of Z\'.The analyzed Monte Carlo samples were the Open simulated files produced by the Com-pact Muon Solenoid(CMS)collaboration for proton-proton collisions,corresponding to an integrated luminosity of the LHC run-I with 19.7 fb-1 at √s=8 TeV.Two scenarios,namely a simplified benchmark scenario,called Dark Higgs,and the effective field theory(EFT)formalism,were used for interpretations.Limits were set on Z\',dark matter masses,and the cutoff scale of the EFT.
其他文献
The coexistence of neutron-neutron (n-n),proton-proton (p-p),and neutron-proton (n-p) pairings is in-vestigated by adopting an effective density-dependent contact pairing potential.These three types of pairings can co-exist only if the n-p pairing is stro
In this study,we choose the scalar and axialvector diquark operators in the color antitriplet as the funda-mental building blocks to construct four-quark currents and investigate the diquark-antidiquark type axialvector tet-raquark states c(c)u(s) in the
To explore the properties of neutron-rich nuclei with approximately 40 protons,the density-dependent point coupling (DD-PC1) effective interaction parameter is adopted in the relativistic mean-field theory with the complex momentum representation (RMF-CMR
The prediction of reactor antineutrino spectra will play a crucial role as reactor experiments enter the pre-cision era.The positron energy spectrum of 3.5 million antineutrino inverse beta decay reactions observed by the Daya Bay experiment,in combinatio
We present a systematic determination of the responses of PandaX-Ⅱ,a dual phase xenon time projec-tion chamber detector,to low energy recoils.The electron recoil (ER) and nuclear recoil (NR) responses are calib-rated,respectively,with injected tritiated m
We present a nonextensive version of the Polyakov-Nambu-Jona-Lasinio model that is based on nonex-tentive statistical mechanics.This new statistics model is characterized by a dimensionless nonextensivity parameter q that accounts for all possible effects
Last year,the Ξ(1620) state,which is cataloged in the Particle Data Group (PDG) with only one star,was reported again in the Ξ-π+ final state by the Belle Collaboration.Its properties,such as the spectroscopy and decay width,cannot be simply explained in
In this work,we explore the potentiality of future gravitational wave (GW) and Type Ⅰa supernovae (SNeⅠa) measurements to detect cosmic opacity by comparing the opacity-free luminosity distance (LD) of GW events with the opacity-dependent LD of SNe Ⅰa obs
In this study,we utilize a potentially versatile Bayesian parameter approach to compute the value of the pion charge radius and quantify its uncertainty from several experimental e+e-datasets for the pion vector form factor.We employ dispersion relations
The long-standing Galactic center gamma-ray excess could be explained by GeV dark matter (DM) anni-hilation,but the DM interpretation seems to conflict with recent joint limits from different astronomical scale obser-vations such as dwarf spheroidal galax