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Searching for an Invisibly Decaying Higgs Boson in E^+E^-, E-Gamma, and Gamma-Gamma Collisions
O. J. P. Eboli, M. C. Gonzalez-Garcia, A. Lopez-Fernandez +2
Higgs bosons can have a substantial ``invisible'' branching ratio in many extensions of the Standard Model, such as models where the Higgs bosons decay predominantly into light or…
On the Precision of the Computation of the QCD Corrections to Electroweak Vacuum Polarizations
M. C. Gonzalez-Garcia, F. Halzen, R. A. Vázquez
We demonstrate that the dispersive computation of the threshold enhancements to heavy quark vacuum polarizations is unstable. Because of the slow convergence of the dispersion rela…
Searching for Exotic Tau Decays
R. Alemany, J. J. Gomez-Cadenas, M. C. Gonzalez-Garcia +1
We discuss the potential of -charm and B factories for the search of new physics through the study of rare decays. We consider decays that involve the violation of lepton fl…
Quartic Anomalous Couplings in Colliders
O. J. P. Eboli, M. C. Gonzalez-Garcia, S. F. Novaes
We study the production of gauge boson pairs at the next generation of linear colliders operating in the mode. The processes ($V,V^\prime…
Identifying the Higgs Boson in Electron--Photon Collisions
O. J. P. Eboli, M. C. Gonzalez-Garcia, S. F. Novaes
We analyze the production and detection of the Higgs boson in the next generation of linear colliders operating in the mode. In particular, we study the production me…
Measuring the Gamma-Gamma Coupling of the Higgs at Linear Colliders
O. J. P. Eboli, M. C. Gonzalez-Garcia, F. Halzen +1
Observing the production of the Higgs particle in the - mode of a linear collider allows for the measurement of the coupling. We point out that for the interme…
Empirical Determination of the Very High Energy Heavy Quark Cross Section from Non-Accelerator Data
M. C. Gonzalez-Garcia, F. Halzen, R. A. Vazquez +1
To cosmic rays incident near the horizon the Earth's atmosphere represents a beam dump with a slant depth reaching 36000~g~cm at . The prompt decay of a heavy quar…