Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-10-15
Phys.Lett. B578 (2004) 165-175
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, LaTeX, 1 postscript figure included, uses epsfig.sty Minor revisions in the discussion of future prospects, 1 ref ad
Scientific paper
Supersymmetry may resolve the disagreement between the precision electroweak data and the direct limit on the higgs mass, if there are light sneutrinos in the mass range 55 GeV $ < m_{\snu} < $ 80 GeV. Such sneutrinos should decay invisibly with 100% branching ratio and contribute to the $\gamma$ + missing energy signal, investigated by all the LEP groups. It is shown that while the data accumulated by a single group may not be adequate to reveal such sneutrinos, a combined analysis of the data collected by all four groups will be sensitive to $m_{\snu}$ in the above range. If no signal is found a lower bound on $m_{\snu}$ stronger than that obtained from the $Z$-pole data may emerge.
Datta Amitava
Datta Aseshkrishna
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