Counting neutrinos with monojets

Francis Halzen, Ken ichi Hikasa

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


In proton-antiproton collisions, the Z to W cross-section ratio at large pT is appreciably different from the total Z to W ratio. We drive the relation (dσ/dpT)(W±) · BR(W→ev) ≅ (dσ/dpT)(Z) · BR(Z →vv) for sufficiently large pT, which is valid for three generations. As excess of "monojet" events would signal additional light neutrinos. This method is more sensitive to the variation of nv than the Z total width measurement or the method of total Z → e+e-/ W → ev ratio.

Original languageEnglish
Pages (from-to)135-140
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-2
Publication statusPublished - 1986 Feb 27


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