arXiv:1108.4071·v2·High Energy Physics — Phenomenology
Impact of the relatively light fourth family neutrino on the Higgs boson search
S. A. Cetin (Doğuş University, Department of Physics, Istanbul, Turkey.)🇹🇷 · T. Cuhadar-Donszelmann (University of Sheffield, Department of Physics and Astronomy, Sheffield, U. K.)🇬🇧 · M. Sahin (TOBB University of Economics and Technology, Physics Division, Ankara, Turkey.)🇹🇷 · S. Sultansoy (TOBB University of Economics and Technology, Physics Division, Ankara, Turkey and Institute of Physics, National Academy of Sciences, Baku, Azerbaijan.)🇹🇷 · G. Unel (Department of Physics and Astronomy, University of California at Irvine, Irvine, CA, U. S. A.)🇺🇸
Abstract
The existence of a fourth fermion generation has mostly been considered as a source of enhanced Higgs signals with respect to the 3 family Standard Model predictions. However, a fourth Standard Model family neutrino could cause the opposite situation. It is shown that relatively light fourth family neutrino (2m_(nu_(4))<m_(H)) could drastically change the interpretation of the search results for the Higgs boson, especially if m_(H)<170 GeV.
Comments: 5 pages, 9 figures