634 research outputs found
Search for electromagnetic properties of the neutrino in and collisions at CLIC
We have examined nonstandard and
couplings via production in a and
collisions at the CLIC. We obtain 95% confidence level bounds on
and couplings by considering the
backscattered photon distribution function for incoming photons and Initial
State Radiation (ISR) and Beamstrahlung (BS) effect for initial state electrons
in the and collider modes of linear collider. We
indicate that the reaction provides more than 15
orders of magnitude improvement in neutrino-two photon couplings compared to
LEP limits.Comment: 14 pages, 11 figures, to appear in Phys. Rev.
Probe of anomalous quartic couplings in the photon-photon collisions
In this paper, we examine the potentials of the processes and at the CLIC with
and TeV to investigate anomalous quartic
couplings by two different CP-violating and CP-conserving effective
Lagrangians. We find confidence level limits on the anomalous coupling
parameters at the three CLIC energies and various integrated luminosities. The
best limits obtained from the process
on the anomalous ,
and couplings
defined by CP-conserving effective Lagrangians are GeV, and GeV, while coupling
determined by CP-violating effective Lagrangians is obtained as GeV. In addition, the best limits derived on
, and
and from the
process are obtained as
GeV, GeV, and GeV, respectively.Comment: 33 pages, 27 figures, 4 tables, version to appear in JHE
Constraints on Higgs effective couplings in production of CLIC at 380 GeV
The potential of the process in the first stage of
CLIC considering center of mass energy of 380 GeV and assuming the baseline
integrated luminosity of 500 fb is examined to probe CP conserving
dimension-six operators in a model-independent Standard Model effective field
theory framework. In the analysis, a detailed fast simulation on signal processes and dominant backgrounds are performed including
parton showering with PYTHIA and detector simulation based on ILD type detector
with DELPHES in MadGraph. The obtained best limits on the ,
and are
, and
, respectively.Comment: 13 pages, 6 figures, published versio
Analyzing the anomalous dipole moment type couplings of heavy quarks with FCNC interactions at the CLIC
In this study we examine both anomalous magnetic and dipole moment type
couplings of a heavy quark via its single production with subsequent dominant
Standard Model decay modes at the Compact Linear Collider (CLIC). The signal
and background cross sections are analyzed for heavy quark masses 600 and 700
GeV. We make the analysis to delimitate these couplings as well as to find the
attainable integrated luminosities or 3 observation limit.Comment: 13 pages, 10 figure
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