Mixing of a heavy neutrino with the electron neutrino.

نویسندگان

  • Gilman
  • Rhie
چکیده

We show that recent monojet searches in electron-positron annihilation experiments can be used to extend significantly the limits on the mixing of a massive fourth generation neutrino with the electron neutrino. When combined with other limits from hadron decays and secondary vertex searches in hadron and electron-positron annihilation experiments, bounds of /Urd12 5 10B6 for neutrino masses of 10 MeV/c2 to over 10 GeV/c2 are obtainable by analysis of existing data. Submitted to Physical Review Rapid Communications * Work supported by the Department of Energy, contract DE A CO3 76s F005 15.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Heavy neutrinos production and decay in future e+e− colliders

The production of heavy and light neutrinos in e+e− future colliders is considered. The cross section for the process e+e− → νN and then the heavy neutrino decay N → W±e∓ is determined for experimentally possible values of mixing matrix elements. The bound on the heavy neutrino-electron mixing is estimated in models without right-handed currents. The role of neutrino CP eigenvalues and the mass...

متن کامل

پراکندگی نوترینوی میونی از روی الکترون قطبیده به الکترون و نوترینو در فضا- زمان ناجابه‌جایی

For neutrino scattering from polarized electron, the weak interaction term in the cross section is significantly suppressed by the polarized term. The magnetic moment term does not receive any correction from the electron polarization. Hence, the study of the magnetic moment of neutrinos through scattering from the polarized electron leads to a stronger bound on the neutrino magnetic moment com...

متن کامل

Light neutrino propagation in matter without heavy neutrino decoupling

We review the propagation of light neutrinos in matter assuming that their mixing with heavy neutrinos is close to present experimental limits. The phenomenological implications of the non-unitarity of the light neutrino mixing matrix for neutrino oscillations are discussed. In particular we show that the resonance effect in neutrino propagation in matter persists, but for slightly modified val...

متن کامل

Flavour and polarisation in heavy neutrino production at e+e− colliders

We analyse Wν production at ILC, paying special attention to the role of the final lepton flavour and beam polarisation in the search for a new heavy neutrino N . We show that a sizeable coupling to the electron VeN ∼ 10−2 is necessary to have an observable signal in any of the channels, despite the fact that the signal may be more visible in muon or tau final states. The non-observation of a h...

متن کامل

Results from the Salt Phase of Sno

The Sudbury Neutrino Observatory (SNO) has recently completed an analysis of data from the salt phase of the experiment, in which NaCl was added to the heavy-water neutrino target to enhance sensitivity to solar neutrinos. Results from the 391-day salt data set are summarized, including the measured solar neutrino fluxes, the electron energy spectrum from charged current interactions, and the d...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Physical review. D, Particles and fields

دوره 32 1  شماره 

صفحات  -

تاریخ انتشار 1985