17667398
Model independent constraints on contact interactions from polarized Bhabha scattering at LC
We discuss electron-electron contact-interaction searches in the process e^+e^- -->e^+e^- at a future e^+e^- Linear Collider with c.m. energy \sqrt{s}=0.5 TeV and with both beams longitudinally polarized. Our analysis is based on the measurement of the polarized differential cross sections, and allows to simultaneously take into account the general set of contact interaction couplings as independent, non-zero, parameters thus avoiding simplifying, model-dependent, assumptions. We evaluate the corresponding model-independent constraints on the coupling constants, emphasizing the role of beam polarization, and make a comparison with the case of e^+e^- -->\mu^+\mu^-.
17667398
Model independent constraints on contact interactions from polarized Bhabha scattering at LC
We discuss electron-electron contact-interaction searches in the process e^+e^- -->e^+e^- at a future e^+e^- Linear Collider with c.m. energy \sqrt{s}=0.5 TeV and with both beams longitudinally polarized. Our analysis is based on the measurement of the polarized differential cross sections, and allows to simultaneously take into account the general set of contact interaction couplings as independent, non-zero, parameters thus avoiding simplifying, model-dependent, assumptions. We evaluate the corresponding model-independent constraints on the coupling constants, emphasizing the role of beam polarization, and make a comparison with the case of e^+e^- -->\mu^+\mu^-.
121188774
IDENTIFICATION OF GRAVITON EXCHANGE EFFECTS AT HIGH ENERGY COLLIDERS
17588569
Model independent analysis of the trilinear gauge boson couplings at LC: role of polarized cross sections
By means of a model-independent analysis, we discuss the constraints on anomalous trilinear gauge-boson couplings that can be obtained from the study of electron-positron annihilation into $W$ pairs at LC with \sqrt{s}=0.5 TeV and 1 TeV. We consider the general CP conserving anomalous effective Lagrangian, as well as some specific models with reduced number of independent couplings. The analysis is based on combinations of observables with initial and final state polarizations, that allow to separately constrain the different couplings and to improve the corresponding numerical bounds.
118232938
Searches for and separation of effects of lepton and boson mixing at linear e+e- colliders
121870869
Determination of the spin of the narrow graviton Kaluza–Klein resonances in the process of lepton pair production in the Large Hadron Collider for the ATLAS experiment
The method of identifying the spin of the first excited graviton state predicted by the Randall–Sundrum model with additional spatial measurements in the process of lepton pair production in the Large Hadron Collider (LHC) is suggested. The method is based on an analysis of the characteristic angular distributions of the lepton pairs being the graviton decay products. Graviton discovery and identification reaches equal to 2.1 TeV (1.2 TeV) and 3.9 TeV (2.9 TeV) are established with a confidence level of 5σ (95%) for graviton coupling constants $ {{k} \left/ {{{{\bar{M}}_{\text{Pl}}}}} \right.} $ equal to 0.01 and 0.1, respectively, for the ATLAS experiment on the LHC.
120988003
Baikal neutrino project: history and prospects
The history, current status, and prospects for the development of the Baikal Neutrino Project are considered. The main physical results obtained with the help of NT200 and NT200+ neutrino telescopes are presented.